Laser & Optoelectronics Progress, Volume. 60, Issue 20, 2001001(2023)
Improved Sun Glint Computational Model Based on WGS-84 Ellipsoid and Simulation Analysis
The sun glint observation mode is adopted when a satellite payload detects greenhouse gases over the ocean to obtain high-precision gas concentration data. Therefore, accurately calculating the real-time sun glint position is a prerequisite for obtaining high-precision data. An improved sun glint calculation model based on an optimal line search is proposed. According to the WGS-84 ellipsoid model, on the basis of dichotomy searching to meet the requirements of specular reflective speckles, the algorithm is improved by using the idea of optimal line search to better meet the coplanar condition of the sun glint. Compared with the simulation results of the Satellite Tool Kit (STK), the sun glint position distance error calculated by the improved model is significantly reduced to 90 m.
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Chunjie Dai, Aiming Zhou, Yi Yang, Dongdong Zhang. Improved Sun Glint Computational Model Based on WGS-84 Ellipsoid and Simulation Analysis[J]. Laser & Optoelectronics Progress, 2023, 60(20): 2001001
Category: Atmospheric Optics and Oceanic Optics
Received: Nov. 14, 2022
Accepted: Dec. 1, 2022
Published Online: Sep. 28, 2023
The Author Email: Zhang Dongdong (zhangdongdong@mail.sitp.ac.cn)