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MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovic

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Page 1: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

MIDN 1/C Warren Rooney

Professor Svetlana Avramov-Zamurovic

Page 2: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Find the beam from 1 camera location

Determine propagation in xyz plane

Extrapolate beam to find source

Page 3: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Directed energy weapons of increased interest

Necessary to find laser source

On-axis or off-axis detection

Laser light spreads via 2 methods

Diffraction

Spreading

Page 4: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Use 2 camera locations

Allowed for use of plane geometry

Water filled

testing container

Laser

Camera with

red lens filter

Page 5: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Side View x-z plane

๐‘ ๐‘™๐‘œ๐‘๐‘’ =โˆ†๐‘ง

โˆ†๐‘ฅ

Top View x-y plane

๐‘ ๐‘™๐‘œ๐‘๐‘’ =โˆ†๐‘ฆ

โˆ†๐‘ฅ

-20020406080100

-40

-20

00

5

10

15

20

25

30

35

y axis (cm)

x axis (cm)

Laser in Space

z a

xis

(cm

)

Laser

Side Camera

Top Camera

Direction of Propagation

Intensity Image of Beam from Above

200 400 600 800 1000 1200

100

200

300

400

500

600

700

800

900

1000

Binary Representation of Beam from Above

200 400 600 800 1000 1200

100

200

300

400

500

600

700

800

900

1000

How the code calculates beam slope

Page 6: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Size of testing environment

Camera distance from laser

Size of testing compartments

Laser power

Safety concerns limited to 2 mW

Error within 0.5 cm

0.5% of camera distance from laser

Page 7: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Slope and Direction for x-z plane based off intensity

Similar Angles for x-y plane

y=x*tan(ฮธ)

Page 8: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

x

z

y

Absolute Error: 0,9 cm or 0.55%

Page 9: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Determine slope of beam โ€˜polyfitโ€™ command used on

intensity images

Determine x-y component Utilizes similar angle of two

perpendicular lines

Static environment Water provides unrealistic

stability in environment Laser easily seen Limited testing distance

Error slightly larger than desired metric

Page 10: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Testing in more dynamic environment

Utilize smoke machine

Determine error in distance measurement

Compartmentalized Atmospheric Tank (CAT)

Page 11: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Outside

61ยฐF

58% humidity

30.3 inHg

Inside Tank

75ยฐF

36% humidty

29.92 inHg

Weather@Home Multi Channel Sensor from OregonScientific

Page 12: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Absolute Error at 1.6 m : 0.16 cm Absolute Error at 1.8 m : 0.15 cm

Errors Extrapolated to 1 km : 100 m and 83.33 m respectively

Page 13: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Almost met metric for lab environment

Inaccurate at longer distances

Unable to vary conditions inside CAT

Showed need for improvement

More precise distance measurement

Less reliance on similar angles

Potential solution: power vs distance relationship

Page 14: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Water Tank

CAT

2 mW HeNe Laser

DCU223M Camera

Red Notch Filter

Weather@Home Sensor

Laptop

Page 15: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

Geometric and Trigonometric Equations (4 wks)

One camera perspective

Theoretical phase

Laser Testing in Lab Environment (10 wks)

Determine beam slope in 3 dimensions

Minimize variation

Compare computations to actual measurements

Page 16: MIDN 1/C Warren Rooney Professor Svetlana Avramov-Zamurovicย ยท Side View x-z plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† Top View x-y plane ๐‘ ๐‘™ ๐‘’= โˆ† โˆ† 100 80 60 40 20 0 -20-40-20 0 0

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