Real-Time Recognition Method for Space Debris Laser Ranging Signals Based on Deep Learning

Chenguang Wu; Zhibo Wu; Ying He; Haifeng Zhang; Si Qin; Mingliang Long; Zhongping Zhang

doi:10.3788/LOP241321

Laser & Optoelectronics Progress, Volume. 62, Issue 5, 0512004(2025)

Real-Time Recognition Method for Space Debris Laser Ranging Signals Based on Deep Learning

Chenguang Wu^1,2、*, Zhibo Wu^2,3, Ying He¹, Haifeng Zhang^2,3, Si Qin^2,3, Mingliang Long², and Zhongping Zhang^2,3

Author Affiliations

¹College of Sciences, Shanghai University, Shanghai 200444, China

²Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China

³Key Laboratory of Space Object and Debris Observation, Chinese Academy of Sciences, Nanjing 210008, Jiangsu , China

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Figures & Tables(7)

Fig. 1. Single cell flowchart of LSTM

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Fig. 2. Flowchart of the proposed algorithm

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Fig. 3. Recognition results by professional human. (a) Debris 1; (b) debris 2; (c) debris 3; (d) debris 4; (e) debris 5; (f) debris 6; (g) debris 7; (h) debris 8; (i) debris 9

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Fig. 4. Recognition results by echo recognition correlation method. (a) Debris 1; (b) debris 2; (c) debris 3; (d) debris 4; (e) debris 5; (f) debris 6; (g) debris 7; (h) debris 8; (i) debris 9

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Fig. 5. Recognition results by LSTM model algorithm. (a) Debris 1; (b) debris 2; (c) debris 3; (d) debris 4; (e) debris 5; (f) debris 6; (g) debris 7; (h) debris 8; (i) debris 9

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Table 1. Results of indicators for different algorithms
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Table 1. Results of indicators for different algorithms
Algorithm Recall Precision F1 score
Echo signal correlation method 0.2233 0.2061 0.2144
LSTM model 0.7980 0.4895 0.6068

Table 2. Average running time of different algorithms
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Table 2. Average running time of different algorithms
Algorithm Average running time /s
Echo signal correlation method 0.0819
LSTM model 0.0754

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Chenguang Wu, Zhibo Wu, Ying He, Haifeng Zhang, Si Qin, Mingliang Long, Zhongping Zhang. Real-Time Recognition Method for Space Debris Laser Ranging Signals Based on Deep Learning[J]. Laser & Optoelectronics Progress, 2025, 62(5): 0512004

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