Shoufeng Ren, Xinming Tang, Xiaoyong Zhu, Ao Li, Dian Qu. A High-Precision Extraction Algorithm for Centroid of Laser Footprint Spot of GF-7 Satellite[J]. Acta Optica Sinica, 2021, 41(10): 1012001
- Acta Optica Sinica
- Vol. 41, Issue 10, 1012001 (2021)
Fig. 1. Flow chart of our algorithm
Fig. 2. Simulated spot images. (a) Ideal simulated spot; (b) simulated spot with 15% random noise
Fig. 3. Relationship between LOASI and ground optical projection
Fig. 4. Laser optical axis surveillance image
Fig. 5. Centroid of LOASI spot extracted by different algorithms
Fig. 6. GF-7 LOASI-1, LOASI-2 centroid coordinate statistics in August 19, 2020. (a) LOASI-1, in x direction; (b) LOASI-1, in y direction; (c) LOASI-2, in x direction; (d) LOASI-2, in y direction
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Table 1. Centroid statistics of simulated spots extracted by different algorithmsunit:pixel
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Table 2. Centroid statistics of GF-7 laser spots extracted by different algorithmsunit:pixel
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Table 3. Statistical results of LOASI-1, LOASI-2 centroid extraction experiment of GF-7 in August 19, 2020unit:pixel
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