hrsc-a - fred sigernesfred.unis.no/agf218/lecture4_5_2-hrsc.pdf · 2006-09-15 · hrsc-a since...
TRANSCRIPT
Viewgraphs provided by courtesy of [email protected]
HRSC-A
Since 1997:
- numerous pilot projects
for commercial and
scientific applications
- camera technology was
originally developed for
the Russian Mars 96
space mission and
modified for airborne
remote sensing
applications
Since 1997:
- numerous pilot projects
for commercial and
scientific applications
- camera technology was
originally developed for
the Russian Mars 96
space mission and
modified for airborne
remote sensing
applications
HRSC-A: Digital airborne multispectral stereo scanner
Viewgraphs provided by courtesy of [email protected]
HRSC-AX: new generation
Since 2000:
- Spin-off of the HRSC-A system
- Technical changes vs. HRSC-A:
• extended field of view (12k-CCD-lines)• higher data rates => higher geometrical
resolution• higher radiometrical resolution (12 bit)• optimized color registration• true-color due to optimized color filters
Since 2000:
- Spin-off of the HRSC-A system
- Technical changes vs. HRSC-A:
• extended field of view (12k-CCD-lines)• higher data rates => higher geometrical
resolution• higher radiometrical resolution (12 bit)• optimized color registration• true-color due to optimized color filters
HRSC-AX / W: Airborne Extended / Wide
Viewgraphs provided by courtesy of [email protected]
HRSC-AX / -AXW / -A Technical Data
HRSC-AX HRSC-AXW HRSC-A
Focal Length 150 mm 47 mm 175 mm
Number of CCD-Lines 9 (4 colors) 5 (2 colors) 9 (4 colors)
Pixel/CCD-Line 12,000 12,000 5,184
Field of View 41° • 29° 30° • 79° 38° • 12°
Stereo Angles ±20.5°, ±12.0° ±14.5°, ± 2.2° ±18.9°, ±12.8°
Color Lines vs. Nadir -4.6°/-2.3°/2.3°/4.6° -7.3°/7.3° -15.9°/-3.3°/3.3°/15.9°
Pixel Size 6.5 μm 6.5 μm 7 μm
IFOV: 0.0025° (8.9’’) 0.0079° (28.5’’) 0.0023° (8.3’’)
Max. Scan Rate 1,640 lines/s 1,640 lines /s 450 lines /s
Ground Resolution at 450 Hz 16 cm / 4 cm 16 cm / 13 cm 16 cm / 4 cmGround Resolution at 820 Hz 4 cm / 4 cm 4 cm / 13 cm -(at h=1000 m, v=70 m/s)
Radiom. Resolution 12 bit 12 bit 8 bit
Direct georeferencing Applanix POS-AV/DG 510
Viewgraphs provided by courtesy of [email protected]
HRSC-AX Camera integration with AIMU
Viewgraphs provided by courtesy of [email protected]
Overview: peripheral devices
Applanix POS, Sony Tape Recorder
Camera Control Unit
Zeiss T-AS PlatformMain Power Supply
HRSC-AX/W
Viewgraphs provided by courtesy of [email protected]
HRSC-A: flight configuration
HRSC-A in a Cessna 208 Caravan
Viewgraphs provided by courtesy of [email protected]
HRSC-AX: flight configuration
HRSC-AX Camera in a Beech 200
Viewgraphs provided by courtesy of [email protected]
Orientation Data
Estimation of Boresight Offsets and Drifts, Time Offsets, GPS-Offset and Drift
Image information(Tiepoints)
Calibration data(of all stereo lines)
Orientation data(by DGPS-INS processing)
Estimation of φ und κ boresight offsets (and drifts *) and time offset between image and attitude data by optimization of ray intersection of 5 stereo observations within each image strip
Estimation of ω boresight offsets (and drifts *) and time offset between image- andposition data by optimization of tiepoints between image strips
Estimation of offset and drift of DGPS position data(in case of errorneous DGPS solution)
Orientation data(by DGPS-INS processing)
Boresight offsets (and drifts),time offsets,
( GPS offset and drift)Final orientation data+ =
GroundControlPoints
* (boresight drifts are estimated in case of reduced IMU quality)
Viewgraphs provided by courtesy of [email protected]
Geometric correction (extreme conditions)
HRSC-QM, Berlin, Mai 1998, Flight altitude 3000m
Viewgraphs provided by courtesy of [email protected]
HRSC-QM, railroad yard near Duisburg, Mai 1998, Flight altitude 3000m
Geometric correction (extreme conditions)
Raw data Geometrically corrected data
Viewgraphs provided by courtesy of [email protected]
Geometrical correction
Muenchen, Nov 11, 2001, Flight Altitude 2,500 m, Ground Resolution 10x18 cm
Original image HRSC-AX
1,650 m
Correction 1
no time shiftTsbet=Timage
Correction 2
time shiftdT = 6 ms
Flight direction
Viewgraphs provided by courtesy of [email protected]
Geometrical correction (details)
Muenchen, Nov 11, 2001, Flight Altitude 2,500 m, Ground Resolution 10x18 cm
Correction 2with time shiftdT = 6 ms
Roll-angle movement: no
Original image HRSC-AX
Roll-angle movement:10-12 Hz2-3 pixel ampl. (5 µdeg)
Correction 1no time shiftT sbet = T image
Roll-angle restmovement:10-12 Hz1 pixel (2 µdeg)
Viewgraphs provided by courtesy of [email protected]
Cartographic Data Products
Example 1:
HRSC-A: Digital Color Image Map1 : 5000Berlin, 2000
Viewgraphs provided by courtesy of [email protected]
Cartographic Data Products
Example 2:
HRSC-A: Digital Elevation Model300 km2, 50 cm rasterAbsolute accuracy 20 cmBerlin, 2000
Viewgraphs provided by courtesy of [email protected]
HRSC-AX DSM- and Ortho-Products
Halle (Sachsen-Anhalt), July 6, 2001, Flight Altitude 5,000 m, Ground Resolution 20 cm
DSM 1 m-grid RGB 20 cm/pixel False-Color-Infrared 20 cm/pixel
1,650 m
Viewgraphs provided by courtesy of [email protected]
HRSC-AX RGB-True Color
Berlin-Adlershof, May 3, 2001, Flight Altitude 5,000 m, Ground Resolution 20 cm