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University of Kansas John D. Paden Jan 26, 2003 Sandbox Calibration

Sandbox Calibration

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Sandbox Calibration. John D. Paden Jan 26, 2003. Sky shot w/o 6 dB attenuator (10 cm). Sky shot w/o 6 dB attenuator (40 cm). Sky shot w/o 6 dB attenuator (70 cm). Sky shot w/ 6 dB attenuator (10 cm). Sky shot w/ 6 dB attenuator (40 cm). Sky shot w/ 6 dB attenuator (70 cm). - PowerPoint PPT Presentation

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University of Kansas

John D. PadenJan 26, 2003

Sandbox Calibration

University of Kansas

Sky shot w/o 6 dB attenuator (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Sky shot w/o 6 dB attenuator (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Sky shot w/o 6 dB attenuator (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Sky shot w/ 6 dB attenuator (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Sky shot w/ 6 dB attenuator (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Sky shot w/ 6 dB attenuator (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Mixed sky shots (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Mixed sky shots (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Mixed sky shots (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 60 cm (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 60 cm (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 60 cm (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 270 cm (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 270 cm (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 270 cm (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 2x270 cm (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 2x270 cm (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter over 2x270 cm (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter w/ sky (10 cm)

15 20 25 30 35 40 45 50 55 60-70

-60

-50

-40

-30

-20

-10

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter w/ sky (40 cm)

15 20 25 30 35 40 45 50 55 60-80

-70

-60

-50

-40

-30

-20

Range bin

dB

CoherentIncoherentTotal

University of Kansas

Clutter w/ sky (70 cm)

15 20 25 30 35 40 45 50 55 60

-80

-70

-60

-50

-40

-30

Range bin

dB

CoherentIncoherentTotal

University of Kansas

SNR of sky shot w/o 6 dB attenuator

10 20 30 40 50 60 70

40

45

50

55

60

65

70

75

SNR

Range Bin

dB

10 cm40 cm70 cm

University of Kansas

SNR of clutter over 270 cm

10 20 30 40 50 60 70 80 90

40

45

50

55

60

65

70

75

80

SNR

Range Bin

dB

10 cm40 cm70 cm

University of Kansas

Metal Raw-data

-120

-100

-80

-60

-40

-20

Antenna Position 10-70 cm

Ra

ng

e B

in

Target at range bin 53

5 10 15 20 25

10

20

30

40

50

60

University of Kansas

Metal Tube

-0.4 -0.2 0 0.2 0.4 0.6 0.8

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

x (meters)

de

pth

(m

ete

rs)

-20

-10

0

10

20

30

40

50

University of Kansas

Metal Tube (w/o sky compensation)

-30

-20

-10

0

10

20

30

40

50

-0.4 -0.2 0 0.2 0.4 0.6 0.8

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

cross-track (meters)

de

pth

(m

ete

rs)

University of Kansas

Metal Tube (zoomed in)

-20

-10

0

10

20

30

40

50

-0.1 0 0.1 0.2 0.3 0.4 0.5-0.6

-0.58

-0.56

-0.54

-0.52

-0.5

-0.48

-0.46

-0.44

x (meters)

de

pth

(m

ete

rs)

25.062

25.062

29.0929

29.0929

29.0929

29.0929

29.0929

33.1238

33.1238

33.1238

33.1238

33.123837.1546

37.1546

37.1546

37.1546

37.1546

41.1855

41.1

85545

.2163

45.2163

49.247253.278

29.0929

25.062

33.1238

25.062

57.3089

21.0312

21.0

312

37.1546

29.0929

University of Kansas

Air-filled Raw-data

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Antenna Position 10-70 cm

Ra

ng

e B

in

Target at range bin 53

5 10 15 20 25

10

20

30

40

50

60

University of Kansas

Air-filled Tube

10

20

30

40

50

60

-0.4 -0.2 0 0.2 0.4 0.6 0.8-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

University of Kansas

Air-filled Tube (w/o sky comp.)

10

20

30

40

50

60

cross-track (meters)

de

pth

(m

ete

rs)

-0.4 -0.2 0 0.2 0.4 0.6 0.8-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

University of Kansas

-20

-10

0

10

20

30

40

0.05 0.1 0.15 0.2 0.25 0.3 0.35

-0.6

-0.58

-0.56

-0.54

-0.52

-0.5

-0.48

x (meters)

de

pth

(m

ete

rs)

25.6622

29.463531.364232.3145

35

.16

55

University of Kansas

Final

10

20

30

40

50

60

across-track (meters)

alo

ng

-tra

ck

(m

ete

rs)

-0.4 -0.2 0 0.2 0.4 0.6 0.8-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

University of Kansas

Final (w/o sky compensation)

10

20

30

40

50

60

cross-track (meters)

alo

ng

-tra

ck

(m

ete

rs)

-0.4 -0.2 0 0.2 0.4 0.6 0.80

0.5

1

1.5

2

2.5

3