scripps institute of oceanography adcp processing workshop may 18-20, 2015 · 2015-05-18 · codas...
TRANSCRIPT
![Page 1: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/1.jpg)
Scripps Institute of Oceanography ADCP processing workshop
May 18-20, 2015
UHDAS ADCP data Acquisition and CODAS processing
1: Outline
UHDAS + CODAS Documentation
http://currents.soest.hawaii.edu/docs/adcp_doc/index.html
![Page 2: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/2.jpg)
OutlineDay 1: Morning: Presentation 1. ADCP 2. ADCP Data Acquisition 3. CODAS Processing 4. Evaluation
After: Practice
2: Outline
![Page 3: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/3.jpg)
Outline1. ADCP2. ADCP Data Acquisition3. CODAS Processing4. Evaluation
3: Outline
![Page 4: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/4.jpg)
(I) ADCP: Getting Ocean Velocity
ADCP : Acoustic (it pings along beams at a frequency)Doppler (uses frequency shift to get velocity along the beam)Current (include many more steps to get ocean velocity)Profiler (listen for the return in small chunks of time to create a vertical profile)
4: ADCP
![Page 5: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/5.jpg)
(I) ADCP: Getting Ocean Velocity
ADCP : AcousticDopplerCurrentProfiler
5: ADCP-- Acoustic
![Page 6: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/6.jpg)
6: ADCP-- Doppler
ADCP :
Acoustic DopplerCurrentProfiler
![Page 7: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/7.jpg)
ADCP:AcousticDoppler Current Profiler
7: ADCP-- Profiler
![Page 8: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/8.jpg)
8: ADCP-- Current (1)
ADCP : Getting Ocean Currents
![Page 9: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/9.jpg)
9: ADCP-- Current (2)
ADCP : Getting Ocean Currents
![Page 10: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/10.jpg)
10: ADCP-- Current (3)
ADCPGetting OceanCurrents
Four beams● 90deg apart● 30 (or 20)deg up from vertical
● “forward beam” is #3
● usually 45deg starboard of forward
![Page 11: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/11.jpg)
11: ADCP-- Current (4)
ADCPGetting Ocean Currents
Four beams● 90deg apart● 30 (or 20)deg up from vertical
● “forward beam” is #3● usually 45deg starboard of forward
![Page 12: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/12.jpg)
12: ADCP-- Current (5)
ADCPGetting Ocean Currents
Two oppositebeams make avertical plane
![Page 13: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/13.jpg)
13: ADCP-- Current (6)
ADCPGetting Ocean Currents
Now we have two vertical planesat 90deg to each other
These are the basis of the horizontal and vertical velocities
Horizontal velocities will be usedto get ocean velocities
Vertical velocities will be used forerror-checking
![Page 14: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/14.jpg)
14: ADCP-- Current (7)
ADCPGetting Ocean Currents
Two beams makeone vertical plan
This shows thevelocities determinedby the Doppler shift;
“beam velocities”
![Page 15: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/15.jpg)
15: ADCP-- Current (8)
ADCP: Getting Ocean Currents
Interpret the two beam velocitiesone horizontal and one verticalvelocity
![Page 16: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/16.jpg)
16: ADCP-- Current (9)
ADCP: Getting Ocean Currents
Now we see the horizontal andvertical velocities on the two planes
Use the horizontal velocities for determining ocean velocities requires more steps.
![Page 17: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/17.jpg)
17: ADCP-- Current (10)
ADCP: Getting Ocean Currents
This is a top-down view of the measuredhorizontal velocity ininstrument coordinates(from the two planesmade by the beams)
(determining oceanvelocities requiresmore steps)
![Page 18: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/18.jpg)
18: ADCP-- Current (11)
ADCP: Getting Ocean Currents
This is a top-downview of the measured horizontal velocityin ship coordinates.
The instrumentcoordinates valuesare rotated by thetransducer angle.
(determining oceanvelocities requiresmore steps)
![Page 19: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/19.jpg)
19: ADCP-- Current (12)
ADCP: Getting Ocean Currents
This is a top-downview of the measured horizontal velocityin earth coordinates.
The instrumentcoordinates valuesare rotated by theship's heading.
(determining oceanvelocities requiresmore steps)
![Page 20: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/20.jpg)
20: ADCP-- Current (13)
ADCP: Getting Ocean Currents
Summary of steps:
Doppler to beam (not shown)
below here: horizontal+vertical
● beam to instrument ● instrument to ship● ship to earth
![Page 21: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/21.jpg)
21: ADCP-- Current (14)
ADCP: Getting Ocean Currents
Earth coordinates + GPSgives ship speed
add ship speed to measured velocityto getocean velocity
![Page 22: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/22.jpg)
22: ADCP-- Current (15)
ADCP: Getting Ocean Currents
Complete summary:
beam velocities
+
transducer orientation + + heading
+
gps
ocean velocities
![Page 23: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/23.jpg)
beam velocities
+
transducer orientation +
heading
+gps
ocean velocities
ADCP: Data components
ADCP
attitude
position
(processing)
23: ADCP – Current (16)
calibration
![Page 24: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/24.jpg)
Outline1. ADCP2. ADCP Data Acquisition3. CODAS Processing4. Evaluation
24: Outline
![Page 25: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/25.jpg)
ADCP Acquisition Systems
● VmDAS (provided with purchase)● UHDAS (developed at Univ Hawaii)
● Installed on UNOLS ships, rolling out to NOAA ships● Link to Table of ships
25: Acquisition Systems (1)
There are two acquisition systems for vessel-mounted ADCPs:
● Basic requirements● Processing● Monitoring
Components – Overview:
![Page 26: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/26.jpg)
ADCP Acquisition Systems: Overview
● Basic requirements:● Control ADCP settings● Acquire ADCP data● Acquire ancillary data
– Position– Attitude (heading)
● Timestamp all
● Processing● Monitoring
Core
Extra26: Acquisition Systems (1)
![Page 27: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/27.jpg)
ADCP Acquisition Systems: Overview
● Basic requirements● Processing
● Coordinate transformation● Editing● Averaging● Graphical Displays
● Monitoring
27: Acquisition Systems (2)
![Page 28: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/28.jpg)
ADCP Acquisition Systems: Overview
● Basic requirements● Processing● Monitoring
● Computer system● Data acquisition● Processing● Access to data
28: Acquisition Systems (3)
![Page 29: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/29.jpg)
ADCP Acquisition systems: Details
● Basic requirements: ● Overview● Serial setup● Data logging
● Processing● Monitoring
29: Acquisition Systems – Comparison (1)
Comparison (UHDAS/VmDAS
)
![Page 30: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/30.jpg)
ADCP Acquisition Systems- Overview UHDAS VmDAS
developer Univ Hawaii TRDIstyle linux system windows applicationsource open source executablepurpose seagoing all-purpose oceanographers goals maximize off-the-shelf - usefulness at sea - long-term value for researchevolution continuous incrementalsetup complex confusing30: Acquisition Systems – Comparison (2)
![Page 31: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/31.jpg)
ADCP Acquisition: Serial Setup
UHDAS VmDASADCPs multiple one (per computer)feeds any number 3 (older version=2)messages many types fewer types can add more subsample feed record all choose messages record allGUI controls instrument settings everythingoperation simple simple/confusingprotected serial nothing protected processing31: Acquisition Systems – Comparison (3)
![Page 32: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/32.jpg)
Acquisition: Data Logging
UHDAS VmDASdata logging separate one big program processes time tagging buffered unbuffered tag every line tag ensembledata formats multiple TRDI ADCPdata directory heirarchical flattime range match per file match for one logging periodfilenames sort always one logging period ( time=ascii) metadata stored with data text file elsewhere
32: Acquisition Systems – Comparison (4)
![Page 33: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/33.jpg)
ADCP Acquisition Systems: Comparison
● Basic requirements● Overview● Serial setup● Data logging
● Processing● Processing components● Accessing data products
● Monitoring
33: Acquisition Systems – Processing (1)
![Page 34: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/34.jpg)
Processing: Comparison UHDAS VmDASediting CODAS minimalheading reliable primary secondary corrected to replaced by heading accurate fallbackpings interleaved firstconfigure no yes plots?? plots oceanographic: - profiles (E,N) profile (speed, dir) - vector (+topo) vector - contour WinADCP? - bridge (mariner)
34: Acquisition Systems – Processing (2)
![Page 35: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/35.jpg)
Accessing Data Products UHDAS VmDASaccess plots ship's web console only consoledata formats TRDI TRDI Matlab netCDFaccess data ship's web acquisition PC windows share windows share NFSdocumentation ship's web acquisition PC www wwwspeedlog out NB150 only yes
35: Acquisition Systems – Accessing Data
![Page 36: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/36.jpg)
ADCP Acquisition Systems: Comparison
● Basic requirements● Overview● Serial setup● Data logging
● Processing● Processing components● Accessing data products
● Monitoring
36: Acquisition Systems – Monitoring (1)
![Page 37: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/37.jpg)
Monitoring monitor UHDAS VmDAS
computer daily report ?serial daily_report LOG and console messages configure tablesADCP beam plots configure plotsProcessing daily_report configure plots plots calibration no ping rate ? bottom track noremotely email to anyone no
37: Acquisition Systems – Monitoring (2)
![Page 38: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/38.jpg)
UHDAS: what it does
● Data acquisition● Data processing● Data access (for scientist at sea)● Monitoring tools
● at sea● from shore
(link in documentation – UHDAS overview)
38: UHDAS: what it does
![Page 39: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/39.jpg)
UHDAS cruise directory structure
39: Where things are written
(link in documentation – [raw+rbin+gbin] )
![Page 40: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/40.jpg)
40: UHDAS files
![Page 41: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/41.jpg)
41: UHDAS files
![Page 42: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/42.jpg)
42: UHDAS files
![Page 43: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/43.jpg)
43: UHDAS files
![Page 44: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/44.jpg)
44: UHDAS files
![Page 45: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/45.jpg)
45: UHDAS files
![Page 46: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/46.jpg)
46: UHDAS files
![Page 47: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/47.jpg)
Outline1. ADCP2. ADCP Data Acquisition3. CODAS Processing4. Evaluation
47: Outline
![Page 48: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/48.jpg)
CODAS ProcessingTime, ADCP,
Position,Attitude
primitive (raw) data
48: CODAS Processing
![Page 49: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/49.jpg)
CODAS Processing Overview
CODAS: Common Ocean Data Access System● Portable● Self-descriptive● aggregated files (vs/ netCDF which is one file)● designed for ADCP data“CODAS Processing” → produce ocean velocities● tools to access and modify CODAS files
49: CODAS Processing
![Page 50: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/50.jpg)
“CODAS” ADCP ProcessingGoals● run on multiple operating systems (Windows, OSX, linux)● open source● now free (Python)
Processing● written for ADCP data● works on most ADCP data acquisition systems (link)● balance real-time product with recoverable dataset● single-ping (automated) and manual editing● calibration
50: CODAS Processing CODAS = “Common Ocean Data Access System”
![Page 51: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/51.jpg)
CODAS Processing Supports...
51: CODAS Processing
![Page 52: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/52.jpg)
CODAS Processing Steps● read ADCP + ancillary data● [transform, edit single-pings, average]● load into CODAS database● nudge positions to get smooth reference layer● apply heading corrections (calculated from
difference between gyro and accurate heading)● determine calibration values (angle, scale factor), -
apply angle and scale factor ● edit out bad profiles of averaged data
52: CODAS processing
![Page 53: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/53.jpg)
53: CODAS processing
![Page 54: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/54.jpg)
54: CODAS processing
![Page 55: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/55.jpg)
At Sea
At Home
55: CODAS processing
ENR
![Page 56: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/56.jpg)
CODAS Processing● Editing (single-ping)
● Acoustic interference● Bubbles● Below bottom
● Editing CODAS database averages “gee-autoedit”
● Interpolate missing heading correction● Apply calibrations
● Scale factor● Rotation● Transducer offset (new/experimental)
56: CODAS Processing
![Page 57: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/57.jpg)
CODAS Processing● Editing (single-ping)
● Acoustic interference● Bubbles● Below bottom
● Editing CODAS database averages “gee-autoedit”
● Interpolate missing heading correction● Apply calibrations
● Scale factor● Rotation● Transducer offset (uncommon/experimental)
57: CODAS Processing
BEFORE AVERAGING
![Page 58: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/58.jpg)
ADCP Single-ping Editing The most common causes of error (addressed by single-ping editing)
● Acoustic Interference● Bubbles● Below bottom
Both tend to cause bias towards zero in measured velocity
58: CODAS Processing
![Page 59: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/59.jpg)
ADCP Single-ping Editing
The most common causes of error (addressed by single-ping editing)
● Acoustic Interference● Bubbles● Below bottom
59: CODAS Processing
![Page 60: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/60.jpg)
ADCP ProcessingSingleping editing: acoustic interference
60: CODAS Processing
![Page 61: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/61.jpg)
ADCP Processing: editing out interference
61: CODAS Processing
![Page 62: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/62.jpg)
ADCP Processing: editing out interference
62: CODAS Processing
![Page 63: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/63.jpg)
ADCP Processing without singleping editing
Averaged ocean velocities NOTE: along-track direction bias
ship directio
n
61: CODAS Processing
![Page 64: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/64.jpg)
ADCP Processing: acoustic interference
WITHOUT singleping editing
USING singleping editing
62: CODAS Processing
![Page 65: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/65.jpg)
ADCP Single-ping Editing
The most common causes of error (addressed by single-ping editing)
● Acoustic Interference● Bubbles● Below bottom
63: CODAS Processing
![Page 66: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/66.jpg)
single-ping editing:underway bias
64: CODAS Processing
![Page 67: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/67.jpg)
ADCP Data: effect of bubbles
Bubbles: - short profiles - strongly biased towards zero
Untreated: - biased ocean velocities
65: CODAS Processing
-8
-8
0
0
m/s
![Page 68: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/68.jpg)
Averaged (unedited) data: Acoustic interference and underway bias (bubbles)
66: CODAS processing
![Page 69: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/69.jpg)
67: CODAS Processing
![Page 70: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/70.jpg)
ADCP Single-ping Editing
The most common causes of error (addressed by single-ping editing)
● Acoustic Interference● Bubbles● Below bottom
68: CODAS Processing
![Page 71: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/71.jpg)
Bottom Editing: - remove acoustic interference, identify maximum amplitude - calculate region of side-lobe interference - flag as BAD all data below the bottom or with side-lobe interference
Acoustic Interference
Bottom Bounce
69: CODAS Processing
![Page 72: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/72.jpg)
CODAS Postprocessing● Editing (single-ping)
● Acoustic interference● Bubbles● Below bottom
● Interpolate missing heading correction● Apply calibrations
● Rotation● Scale factor● Transducer offset (new)
● Manually edit CODAS database averages “gee-autoedit”
70: CODAS Processing
AFTER AVERAGING
![Page 73: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/73.jpg)
CODAS Postprocessing● Editing (single-ping)
● Acoustic interference● Bubbles● Below bottom
● Interpolate missing heading correction● Apply calibrations
● Rotation● Scale factor● Transducer offset (new)
● Manually edit CODAS database averages “gee-autoedit”
71: CODAS Processing
UHDAS processing demo
![Page 74: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/74.jpg)
CODAS Postprocessing● Editing (single-ping)
● Acoustic interference● Bubbles● Below bottom
● Interpolate missing heading correction● Apply calibrations
● Rotation● Scale factor● Transducer offset (new)
● Manually edit CODAS database averages “gee-autoedit”
72: CODAS Processing
![Page 75: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/75.jpg)
CODAS Processing: Calibration● Calibration of averaged data:
● Cross-track error (angle error)– Incorrect transducer angle (constant)– Inaccurate heading (time-varying)
● Alongtrack bias (scale factor)– Soundspeed (single-ceramic transducers
only)● Transition Error
– Offset between gps and adcp
73: CODAS Processing
![Page 76: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/76.jpg)
Calibration: Angle Error
74: CODAS Processing: calibration
![Page 77: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/77.jpg)
75: CODAS Processing
Symptom = Cross-Track ErrorCause = incorrect angle applied
Angle applied comes from ● Transducer angle (beam “3” clockwise from bow)● Heading of ship
● If VmDAS,
– “Primary” heading, often no QC message– If “Primary” fails, replace with “Secondary”
● If UHDAS,
–Reliable heading for each ping (eg gyro)–Heading correction for each averaging period–Calculated relative to devices such as Ashtech, POSMV, Seapath, Mahrs, Phins (hopefully with QC fields)
![Page 78: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/78.jpg)
76: CODAS Processing
Symptom = Cross-Track ErrorCause = incorrect angle applied
Angle applied comes from ● Transducer angle (beam “3” clockwise from bow)
This is a constant value for the whole cruiseExamples of error in transducer angle follow...
![Page 79: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/79.jpg)
Calibration: angle error -3.6deg
77:CODAS Processing
![Page 80: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/80.jpg)
Calibration: angle error -1.6
78: CODAS Processing
![Page 81: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/81.jpg)
Calibration: angle error 0.4
79: CODAS Processing
![Page 82: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/82.jpg)
Symptom = Cross-Track ErrorCause = incorrect angle applied
Angle applied comes from
Heading, which may be in error by● A constant offset● A time-dependent offset
Example follows ...
80: CODAS Processing
![Page 83: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/83.jpg)
Phins-Gyro difference varies with time
0.5 deg
-0.5 deg0.0 deg
Changes in ship's heading affect heading error
0 deg
360 deg
Heading
Heading error
180 deg
81: CODAS Processing
![Page 84: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/84.jpg)
0.5 deg
-0.5 deg0.0 deg
Changes in ship's heading affect heading error
Heading
Heading error
Effect of Time-Dependent Heading Erroron Ocean Velocties
1 degree error in heading means: – 0.1m/s error in ocean velocity – in the cross-track direction
82: CODAS Processing
![Page 85: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/85.jpg)
Is this a heading error?
83: CODAS Processing
![Page 86: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/86.jpg)
Contour plot:
Is this cross-tracksignal(stripes in N/S ocean velocity)due to a heading error?
84: CODAS Processing
![Page 87: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/87.jpg)
Answer
Actually, it's really the ocean, butwe can't tell without knowing
the quality of the accurate heading device.
85: CODAS Processing
![Page 88: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/88.jpg)
Examples of along-track error
Remove during single-ping editing● Acoustic interference● Bubbles (underway bias)
Correct after averaging:● Scale factor (NB150 soundspeed correction)
86: CODAS Processing
![Page 89: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/89.jpg)
Calibration: scale factor (alongtrack bias)
87: CODAS Processing
![Page 90: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/90.jpg)
Calibration: ADCP-GPS offset
(1) Cross-track error:– recovery requires accurate heading
(2) Along-track error:– may indicate a serious problem– recovery may be possible, incomplete,
ambiguous
(3) Transition/maneuvering error– Lag or offset in time or space
88: CODAS Processing
![Page 91: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/91.jpg)
Example: offset between ADCP and GPS creates an artifact during maneuvering
89: CODAS Processing
![Page 92: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/92.jpg)
Transducer offset from GPS--error occurs: transition between on-station and underway
heading speed
...using actuallocation
...using shifted GPSlocation
difference
90: CODAS Processing
![Page 93: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/93.jpg)
Manual Editing
● Bottom interference● Wire interference● Scattering layers● Ringing● Bad shallow PG and underway bias
(see GeeAutoedit documentation)91: CODAS Processing
![Page 94: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/94.jpg)
Summary: What We Did
1. ADCP instrument● What it is; getting ocean velocities
2. ADCP Data Acquisition● Acquisition, processing, monitoring● Comparison: UHDAS vs/ VmDAS● UHDAS data details
3. CODAS Processing ● Single-ping editing● Postprocessing
● Calibration● Editing
92: Summary
![Page 95: Scripps Institute of Oceanography ADCP processing workshop May 18-20, 2015 · 2015-05-18 · CODAS Processing Steps read ADCP + ancillary data [transform, edit single-pings, average]](https://reader034.vdocument.in/reader034/viewer/2022042109/5e8a16bdc7995b4c4d087b34/html5/thumbnails/95.jpg)
Workshop: What Will Do
1. ADCP instrument● What it is; getting ocean velocities
2. ADCP Data Acquisition● Acquisition, processing, monitoring● Comparison: UHDAS vs/ VmDAS● UHDAS data details
3. CODAS Processing ● Single-ping editing● Postprocessing
● Calibration● Editing
93: Next Steps
Day 1afternoon
Day 2Day 3