Acta Optica Sinica, Volume. 44, Issue 18, 1828006(2024)
Design and Validation of High Precision Micro Star Sensor
Figures & Tables(14)
Fig. 2. Logic guidance diagram of key parameters affecting accuracy of star sensors
Fig. 3. Magnitude detection sensitivity as a function of signal-to-noise ratio threshold
Fig. 7. Centroid standard deviation at different gains. (a) Digital gain; (b) analog gain
Fig. 8. Centroid standard deviation at different correlated double sampling values
Fig. 10. TE of fixed weight algorithm and dynamic weight algorithm. (a) Fixed weight algorithm; (b) dynamic weight algorithm
Fig. 11. NEA of fixed weight algorithm and dynamic weight algorithm. (a) Fixed weight algorithm; (b) dynamic weight algorithm
Table 1. Comparison of main performance parameters of star sensors at home and abroad
View tableTable 1. Comparison of main performance parameters of star sensors at home and abroad
Star sensor ASTRO CL ASTRO APS3 AURIGA SA HORUS SAGITTA NST10-G1 Company Jena Jena Sodern Sodern arcsec TY-SPACE Accuracy （3σ） /（″） 6/48 2.4/20 6/40 3.5/25 6/60 5/50 Data update rate /Hz 5 10 5 10 10 10 Mass /g 305 1800 210 1600 270 700 Size /（mm×mm×mm） 60×60×110 137×137×213 56×66×94 141×141×250 50×45×95 115×85×198 Product photo 
Table 2. Statistics of optimal detection parameters
View tableTable 2. Statistics of optimal detection parameters
Parameter Mean standard deviation Optimal standard deviation Improvement /% X direction Y direction X direction Y direction X direction Y direction Exposure time 0.0126 0.0168 0.0115 0.0148 8.73 11.90 Digital gain 0.0102 0.0077 0.0093 0.0073 8.82 5.19 Analog gain 0.0105 0.0092 0.0108 0.0089 -2.86 3.26 Correlated double sampling value 0.0109 0.0148 0.0113 0.0125 -3.67 15.54 Offset 0.0096 0.0095 0.0088 0.0083 8.33 12.63
Table 3. Statistics of the influence of dynamic weight algorithm on the precision of star sensor
View tableTable 3. Statistics of the influence of dynamic weight algorithm on the precision of star sensor
Test item TE （3σ） NEA （3σ） Value of fixed weight algorithm /（″） Value of dynamic weight algorithm /（″） Accuracy improvement /% Value of fixed weight algorithm /（″） Value of dynamic weight algorithm /（″） Accuracy improvement /% X-axis 0.59 0.35 40.68 2.01 1.08 46.27 Y-axis 0.66 0.49 25.76 2.07 0.99 52.17 Z-axis 6.09 3.79 37.78 19.08 10.09 42.87
Tools
Get Citation
Copy Citation Text
Yanqing Wang, Weifeng Du, Xunjiang Zheng, Xinpeng Li, He Jin, Shuai Dong. Design and Validation of High Precision Micro Star Sensor[J]. Acta Optica Sinica, 2024, 44(18): 1828006
Paper Information
Category: Remote Sensing and Sensors
Received: Nov. 15, 2023
Accepted: Feb. 2, 2024
Published Online: Sep. 11, 2024
The Author Email: Wang Yanqing (wangyanqing803@aliyun.com)
CSTR:32393.14.AOS231794
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20