A method for calculating visual axis stability of multi-angle cameras for carbon monitoring

Jian Sun; Fujuan Jia; Weizhi Wang; Jukui Yang; Ruimin Fu

doi:10.1117/12.2666372

4 April 2023 A method for calculating visual axis stability of multi-angle cameras for carbon monitoring

Jian Sun, Fujuan Jia, Weizhi Wang, Jukui Yang, Ruimin Fu

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126174N (2023) https://doi.org/10.1117/12.2666372
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Multi angle camera is the main load of carbon monitoring satellite, and its main application is to improve the accuracy of parameter inversion through multi-directional observation of Bidirectional Reflectance coefficient (BRDF) of forest vegetation. The retrieval accuracy of forest parameters has a strong correlation with the sensitive angle BRDF, which requires that the multi angle camera has a high LOS pointing stability. In this paper, a method to calculate LOS stability based on the rigid body motion and sensitivity matrix of optical elements is proposed. In order to solve the problem that the coordinate system between the sensitivity matrix of optical elements and its rigid body motion is inconsistent, the rotation matrix of each optical element is introduced in the calculation process, and the formula for calculating LOS pointing deviation is given. Finally, according to the formula, the LOS change of the system under this working condition is obtained through simulation analysis of an actual working condition, and compared with the optical software simulation method, the calculation results are consistent, and the calculation method is correct. It can provide a new way to calculate the LOS stability of other remote sensors.

Citation Download Citation

Jian Sun, Fujuan Jia, Weizhi Wang, Jukui Yang, and Ruimin Fu "A method for calculating visual axis stability of multi-angle cameras for carbon monitoring", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126174N (4 April 2023); https://doi.org/10.1117/12.2666372

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