Infrared and Laser Engineering, Volume. 51, Issue 11, 20220076(2022)
Space-based identification method for space debris based on trajectory consistency detection
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Fig. 2. Light curve of space debris when attitude stabilization and rotation
Fig. 6. Schematic diagram of debris trajectory consistency preliminary screening based on DTW
Fig. 7. Error distribution between real trajectories and predicted trajectories
Fig. 9. Debris 1 trajectory fitting results. (a) Data continuity rate 100%; (b) Data continuity rate 50%
Fig. 10. Debris 2 trajectory fitting results. (a) Data continuity rate 100%; (b) Data continuity rate 50%
Table 1. Influence of data continuity rate on the identification stability between two methods
View tableView in ArticleTable 1. Influence of data continuity rate on the identification stability between two methods
Simulated frame num Data continuity rate Angular rate of debris/(″)·s−1 Simulated total debris Proportion of identified number to the total Method1 Method2 20 100% 2 700 100 97.1% 98.3% 20 90% 2 700 100 90.1% 97.6% 20 80% 2 700 100 83.6% 100.0% 20 70% 2 700 100 77.2% 96.7% 20 60% 2 700 100 72.0% 99.1% 20 50% 2 700 100 67.8% 98.5%
Table 2. Influence of angular rate of debris on the identification stability between two methods
View tableView in ArticleTable 2. Influence of angular rate of debris on the identification stability between two methods
Simulated frame num Data continuity rate Angular rate of debris/(″)·s−1 Simulated total debris Proportion of identified number to the total Method1 Method2 20 60% 3 600 100 98.3% 100% 20 60% 2 700 100 72.0% 96.2% 20 60% 1 500 100 45.3% 97.5% 20 60% 720 100 26.1% 99.7% 20 60% 360 100 10.6% 98.3% 20 60% 200 100 0 97.1%
Table 3. Fitting slope and error of simulation samples
View tableView in ArticleTable 3. Fitting slope and error of simulation samples
Name Do not extract simulated observations Extract 10 frames from the simulated images Fitting slope Error Fitting slope Error Real Predicted Real Predicted Debris 1 17.587 17.885 0.298 17.743 17.471 0.272 Debris 2 0.710 4.236 3.526 −0.066 2 4.411 4.477
Table 4. Identification results of low-orbit satellites in stargazing experiments
View tableView in ArticleTable 4. Identification results of low-orbit satellites in stargazing experiments
Name Zenith angle/(°) Magnitudes mV Total identification times Proportion of identification times to the total Method1 Method2 Object 1 87 3.5 13 100% 100% Object 2 84 4.0 10 90% 100% Object 3 81 4.6 11 72.7% 100%
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Yunfan Lei, Long Wang, Hongjun Zhong, Hui Zhang, Yanpeng Wu. Space-based identification method for space debris based on trajectory consistency detection[J]. Infrared and Laser Engineering, 2022, 51(11): 20220076
Paper Information
Category: Photoelectric measurement
Received: May. 10, 2022
Accepted: --
Published Online: Feb. 9, 2023
The Author Email: Wang Long (lucev@qq.com)
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