Modeling and Detection of Star Spot in High Dynamic Condition

Table 1. Optical system parameters of the star sensor
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Table 1. Optical system parameters of the star sensor
FOV/（°） Area array/（pix×pix） Pixel size $D_{p}$ /μm Focal length $f$ /mm
20 1 024×1 024 18 51.957

Table 2. Experimental results of cross correlation template matching method using simple template at three angular velocities
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Table 2. Experimental results of cross correlation template matching method using simple template at three angular velocities
Angular velocity $ω$ /（°·s^-1）
Angle distance error
$Δ θ$ /（"）
Extraction rate
$γ$
Time
$t$ / s
Mean 3sigma Mean Maximum Minimum
1 8.21 3.46 1.00 1.00 1.00 4.16
2 11.69 5.34 0.99 1.00 0.93 4.65
3 22.35 13.18 0.98 1.00 0.91 4.87

Table 3. Experimental results of cross correlation template matching method using complex template at three angular velocities

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Table 3. Experimental results of cross correlation template matching method using complex template at three angular velocities

Angular velocity $ω$ /（°·s^-1）	Angle distance error $Δ θ$ /（"）		Extraction rate $γ$			Time $t$ / s
Angular velocity $ω$ /（°·s^-1）	Mean	3sigma	Mean	Maximum	Minimum	Time $t$ / s
1	8.05	2.50	1.00	1.00	1.00	1 896.64
2	11.05	6.02	0.99	1.00	0.93	2 260.05
3	20.91	14.10	0.98	1.00	0.91	2 387.73

Table 4. Experimental results of traditional method at three angular velocities
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Table 4. Experimental results of traditional method at three angular velocities
Angular velocity $ω$ /（°·s^-1）
Angle distance error
$Δ θ$ /（"）
Extraction rate
$γ$ /%
Time
$t$ / s
Mean 3sigma Mean Maximum Minimum
1 10.72 5.34 0.97 1.00 0.97 4.05
2 16.01 9.06 0.94 1.00 0.82 4.57
3 33.48 20.66 0.83 1.00 0.73 4.69

Table 5. Experimental results of cross correlation template matching method using simple template at three exposure time
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Table 5. Experimental results of cross correlation template matching method using simple template at three exposure time
Exposure time
$t_{e x}$ / ms
Angle distance error $Δ θ$ /（"） Extraction rate $γ$
Time
$t$ / s
Mean 3sigma Mean Maximum Minimum
86 22.05 13.22 0.98 1.00 0.94 5.03
62.5 13.17 8.86 0.99 1.00 0.93 4.76
50 10.14 4.48 0.97 1.00 0.91 4.38

Table 6. Experimental results of cross correlation template matching method using complex template at three exposure time

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Table 6. Experimental results of cross correlation template matching method using complex template at three exposure time

Exposure time $t_{e x}$ / ms	Angle distance error $Δ θ$ /（"）		Extraction rate $γ$			Time $t$ / s
Exposure time $t_{e x}$ / ms	Mean	3sigma	Mean	Maximum	Minimum	Time $t$ / s
86	21.49	12.77	0.98	1.00	0.94	2 368.98
62.5	13.47	9.13	0.99	1.00	0.93	2 056.19
50	10.60	5.20	0.97	1.00	0.91	1 934.20

Table 7. Experimental results of traditional method at three exposure time
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Table 7. Experimental results of traditional method at three exposure time
Exposure time
$t_{e x}$ / ms
Angle distance error $Δ θ$ /（"） Extraction rate $γ$
Time
$t$ / s
Mean 3sigma Mean Maximum Minimum
86 33.93 20.76 0.89 1.00 0.59 4.56
62.5 20.56 13.50 0.82 1.00 0.65 4.36
50 18.09 14.63 0.71 1.00 0.59 4.49

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Di PAN, Qi ZHOU, Xuan LIU, Bing LIU, Hui FANG. Modeling and Detection of Star Spot in High Dynamic Condition[J]. Acta Photonica Sinica, 2022, 51(3): 0304002

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Paper Information

Category:

Received: Sep. 13, 2021

Accepted: Nov. 13, 2021

Published Online: Apr. 8, 2022

The Author Email: ZHOU Qi (zqxhjs@126.com)

DOI:10.3788/gzxb20225103.0304002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Optical system parameters of the star sensor

Table 1. Optical system parameters of the star sensor

Table 2. Experimental results of cross correlation template matching method using simple template at three angular velocities

Table 2. Experimental results of cross correlation template matching method using simple template at three angular velocities

Table 3. Experimental results of cross correlation template matching method using complex template at three angular velocities

Table 3. Experimental results of cross correlation template matching method using complex template at three angular velocities

Table 4. Experimental results of traditional method at three angular velocities

Table 4. Experimental results of traditional method at three angular velocities

Table 5. Experimental results of cross correlation template matching method using simple template at three exposure time

Table 5. Experimental results of cross correlation template matching method using simple template at three exposure time

Table 6. Experimental results of cross correlation template matching method using complex template at three exposure time

Table 6. Experimental results of cross correlation template matching method using complex template at three exposure time

Table 7. Experimental results of traditional method at three exposure time

Table 7. Experimental results of traditional method at three exposure time

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