Optics and Precision Engineering, Volume. 29, Issue 12, 2902(2021)
Stereo celestial positioning of space-based double satellites to space target
Figures & Tables(19)
Fig. 2. Morphological distinction between the star and the space target
Fig. 3. Schematic of two space-based satellites positioning on a space target
Fig. 4. Transmission relationship between the target and the projection point
Fig. 11. Schematic of orbital position relationship between two observation satellites and a space target
Fig. 13. Distribution of the x-axis-error taking five kinds of errors in consideration
Table 1. Parameters setting of payload and target detection indicators
View tableView in ArticleTable 1. Parameters setting of payload and target detection indicators
Parameters Value Detection metrics/cm@200km 15 Detection wave band/μm 0.4-0.7 Pixel size/μm 6.5 Focal plane size/pixel 4 096×4 096 Focal/mm 220 Aperture/mm 110 Dark current noise e-/pixel/s 3 Readout noise e- 1.3 Average quantum efficiency 0.6 Optical system transmittance 0.8 Exposure time/ms 2.3 Pixel filling factor 0.7
Table 2. Coordinates of the target on image plane
View tableView in ArticleTable 2. Coordinates of the target on image plane
Number Actual coordinates Extracted coordinates Payload1 -1 900.3 1 576.5 -1 900.25 1 576.45 Payload2 -1 596.9 1 578.5 -1 596.95 1 578.53
Table 3. Orbital elements and attitude of two observation satellites and a target satellite
View tableView in ArticleTable 3. Orbital elements and attitude of two observation satellites and a target satellite
Parameters Observation satellite 1 Observation satellite 2 Target Semimajor axis/km 6 928.14 6 928.14 7000.14 Eccentricity 0 0 0 Inclination/（°） 97.552 1 97.552 1 97.7141 Right ascension of ascending node/（°） 203.282 203.282 163.536 Argument of perigee/（°） 0 0 0 True anomaly/（°） 0.108 26 8.108 26 0 Roll angle /rad 0 0 — Pitch angle/rad 0.034 9 0.031 3 — Yaw angle/rad 2.203 4 2.035 6 — Elevation angle/（°） 90 90 — Azimuth angle/（°） 0 0 —
Table 4. Location error result of Monte Carlo error simulation
View tableView in ArticleTable 4. Location error result of Monte Carlo error simulation
Error type Location error
（Standard deviation）
Only location error 10.08 m Only attitude error 71.62 m Only orbit error 62.04 m Only installation error 62.12 m Only coordinates error 21.7 m With above five errors 114.62 m
Table 5. Parameters of Monte Carlo error simulation
View tableView in ArticleTable 5. Parameters of Monte Carlo error simulation
Error type Parameters Distribution type Value Location error Location/m Normal（mean 0） Standard deviation 10 Attitude error Roll angle/（°） Normal（mean 0） Standard deviation 0.001 Pitch angle（°） Yaw angle/（°） Orbit error Inclination /（°） Normal（mean 0） Standard deviation 0.001 Right ascension of ascending node/（°） Argument of perigee/（°） Installation error Elevation angle/（°） Normal（mean 0） Standard deviation 0.001 Azimuth angle/（°） Coordinates error Uniform 0.33 Uniform 0.33
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Ju-bo ZHAO, Ting-ting XU, Xiu-bin YANG, Qiang YONG. Stereo celestial positioning of space-based double satellites to space target[J]. Optics and Precision Engineering, 2021, 29(12): 2902
Paper Information
Category: Information Sciences
Received: May. 16, 2021
Accepted: --
Published Online: Jan. 20, 2022
The Author Email: ZHAO Ju-bo (811074631@qq.com)
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