测绘科学技术学报2025，Vol.41Issue(1)：37-41,48,6.DOI:10.3969/j.issn.1673-6338.2025.01.006
三轴稳定型静止轨道遥感卫星地理定位快速算法
A Fast Algorithm for Geolocation of Three-axis Stabilization Geostationary Remote Sensing Satellite
摘要
Abstract
The three-axis stabilization geostationary remote sensing satellite has the characteristics of high time res-olution and plays an important role in the fields of weather forecasting and environmental monitoring.A fast image geolocation method for three-axis stabilization geostationary satellites is proposed by analyzing the conventional geo-location methods and CGMS nominal grid publishing format in this paper.Firstly,the initial incident view vector of each detector of the sensor is constructed.Then the outgoing vector of the payload coordinate system is obtained through the reflection of the east-west mirror and the north-south mirror of the satellite platform.Finally,the vector is converted to one in the satellite body coordinate system.Through the conversions of the satellite orbit coordinate system and the Earth-Fixed Coordinate System in turn,the mirror rotation angle under the ideal CGMS grid can be obtained,which can be converted to the only corresponding CGMS nominal grid position to complete the data posi-tioning.The algorithm omits the complex process of calculating the intersection point between the light vector and the geodetic ellipsoid sphere from the Earth-Fixed Coordinate System,and the computational efficiency is improved by 83.3%compared with that of the conventional geolocation method without losing the positioning accuracy.关键词
三轴稳定/静止轨道/遥感卫星/标称网格/地理定位快速算法Key words
three-axis stabilization/geostationary orbit/remote sensing satellite/nominal grid/fast algorithm for geolocation分类
测绘与仪器引用本文复制引用
李贺,童晓冲,章程,王智超,李树林..三轴稳定型静止轨道遥感卫星地理定位快速算法[J].测绘科学技术学报,2025,41(1):37-41,48,6.基金项目
河南省自然科学基金项目(222300420592). （222300420592）
