Chinese Optics, Volume. 16, Issue 4, 765(2023)
Ground electronics verification of inter-satellites laser ranging in the Taiji program
Fig. 1. Principle diagram of the inter-satellites absolute ranging and laser communication system
Fig. 4. The autocorrelation figure of Weil codes in the optimal shift-cutoff combination
Fig. 7. The comparison of the correlation value between delay and ahead signals
Fig. 11. Experiment results with different length cables. (a) 10 m; (b) 12 m; (c) 20 m; (d) 30 m; (e) 50 m; (f) 60 m
Table 1. Autocorrelation comparison of pseudorandom codes
View tableView in ArticleTable 1. Autocorrelation comparison of pseudorandom codes
伪随机码 处理（取最优） 码长 最大自相关旁瓣绝对值 dB值 m序列（本原多项式系数2011） 无 1023 0.000977 −120.39 遍历插1或0 1024 0.0469 −86.782 gold序列（本原多项式系数2011、 2157） 无 1023 0.06354 −84.136 遍历插1 1024 0.082 −81.929 遍历插0 1024 0.0859 −81.526 Weil码 无 1031 0.0611 −84.544 遍历截取7位 1024 0.0625 −84.288
Table 2. Attached table of experimental results
View tableView in ArticleTable 2. Attached table of experimental results
真实值/m 实验平均值/m 均方差（测距精度）/m 10 9.03 0.86 12 11.13 1.21 20 19.24 1.24 30 30.18 1.59 50 50.14 1.35 60 61.23 1.26
Table 3. Distances corresponding to the number of shifts of the correlation peak at the 50 MHz sampling frequency
View tableView in ArticleTable 3. Distances corresponding to the number of shifts of the correlation peak at the 50 MHz sampling frequency
相关峰移动点数 光速时对应距离/m 70%光速对应距离/m 1 6 4.2 2 12 8.4 3 18 12.6 4 24 16.8 5 30 21.0 6 36 25.2 7 42 29.4 … … … 12 72 50.4 14 84 58.8
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Ru-jie DENG, Yi-bin ZHANG, He-shan LIU, Zi-ren LUO. Ground electronics verification of inter-satellites laser ranging in the Taiji program[J]. Chinese Optics, 2023, 16(4): 765
Category: Original Article
Received: Mar. 10, 2022
Accepted: --
Published Online: Jul. 27, 2023
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