相机阵列在空间目标初轨确定中的应用 
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Application of Camera Array in Initial Orbit Determination of Space Targets
航天工程大学电子与光学工程系, 北京 100000
图 & 表
图 1. 观测图像。(a)单个相机局部图像;(b)配准叠加后局部图像;(c)降噪后局部图像
Fig. 1. Observed images. (a) Partial screenshots of single camera; (b) partial screenshot after registration overlay; (c) partial screenshot after noise debasing
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图 2. 4个相机拍摄图的局部截图。(a)相机1;(b)相机2;(c)相机3;(d)相机4
Fig. 2. Partial screenshots of four-camera shots. (a) Camera 1; (b) camera 2; (c) camera 3; (d) camera 4
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图 3. 配准叠加后结果图的局部截图
Fig. 3. Partial screenshot of registration overlay
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图 4. 星图。(a)原始的;(b)处理后的
Fig. 4. Star maps. (a) Original; (b) processed
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表 1信噪比计算结果
Table1. Calculation results of signal-to-noise ratio
| Data source | E | σ | Star number | Number of pixels | | RSN |
|---|
| Camera 1 | 5.196 | 3.403 | 82 | 33 | 25.5454 | 5.9799 | | 84 | 26 | 27.5384 | 6.5655 | | 132 | 18 | 19.5023 | 4.2034 | | Camera 2 | 5.188 | 3.391 | 82 | 43 | 21.5581 | 4.8275 | | 84 | 32 | 27.6875 | 6.6351 | | 132 | 24 | 18.7917 | 4.0117 | | Camera 3 | 5.173 | 3.393 | 82 | 39 | 24.4615 | 5.6848 | | 84 | 26 | 24.9231 | 5.8208 | | 132 | 26 | 19.3462 | 4.1772 | | Camera 4 | 5.178 | 3.404 | 82 | 35 | 25.8857 | 6.0833 | | 84 | 33 | 26.3030 | 6.2059 | | 132 | 23 | 18.8698 | 4.0222 | | Registration overlay | 20.546 | 7.986 | 82 | 43 | 87.8139 | 8.4232 | | 84 | 35 | 95.8857 | 9.4340 | | 132 | 30 | 66.0667 | 5.7001 |
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表 2各相机使用不同底片常数模型时的定位误差
Table2. Positioning errors when different constant models for each camera used″
| Data source | 4 constant model | 6 constant model | 12 constant model | 20 constant model | 30 constant model |
|---|
| Camera 1 | 3132 | 6.48 | 2.79 | 0.68 | 0.60 | | Camera 2 | 3240 | 7.10 | 2.43 | 0.73 | 0.61 | | Camera 3 | 3140 | 5.79 | 2.31 | 0.69 | 0.59 | | Camera 4 | 3169 | 6.23 | 2.92 | 0.61 | 0.63 | | Registration overlay | 2980 | 6.29 | 2.22 | 0.59 | 0.59 |
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表 3各相机使用不同底片常数模型时的半长轴误差
Table3. Semi-major axis errors when different constant models for each camera usedkm
| Data source | 4 constant model | 6 constant model | 12 constant model |
|---|
| Camera 1 | 1001.282 | 104.187 | 54.664 | | Camera 2 | 1056.562 | 112.654 | 59.781 | | Camera 3 | 1034.257 | 102.633 | 51.222 | | Camera 4 | 984.768 | 89.579 | 47.257 | | Registration overlay | 739.184 | 78.659 | 35.441 |
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杨彪, 李迎春, 张廷华. 相机阵列在空间目标初轨确定中的应用[J]. 光学学报, 2019, 39(2): 0204002. Biao Yang, Yingchun Li, Tinghua Zhang. Application of Camera Array in Initial Orbit Determination of Space Targets[J]. Acta Optica Sinica, 2019, 39(2): 0204002.
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