航天器工程2025，Vol.34Issue(2)：59-65,7.DOI:10.3969/j.issn.1673-8748.2025.02.008
GEO气象卫星长线阵载荷扫描成像几何校正方法
Geometric Correction Method of Long-array Payload Scanning Imaging for GEO Meteorological Satellite
王田野 1王皓 1胡华龙 1曾琪 1张立国1
作者信息
摘要
Abstract
Aiming at the problem of geometric deviation of long-array payload scanning imaging for GEO(geostationary orbit)meteorological satellite,a geometric correction method is proposed.Firstly,a sight line transfer method is used to model the geometric optical path of long-array pay-load,and the mechanism of geometric deviation of long-array payload scanning imaging is ana-lyzed.The research shows that the maximum geometric deviation during ground observation can reach 10 pixels.Then,the equivalent correction formula for scanning imaging is derived,and the accuracy of the equivalent correction formula is evaluated.Finally,a long-array payload scanning imaging experiment is designed to verify the correction method.Results of the experiment show that the maximum geometric deviation after correction has been reduced to 0.27 pixels,which meets the application requirements of on-orbit high precision quantitative remote sensing.关键词
地球静止轨道气象卫星/长线阵载荷/行间错位误差/几何校正Key words
GEO meteorological satellite/long-array payload/inter-line misalignment error/geo-metric correction引用本文复制引用
王田野,王皓,胡华龙,曾琪,张立国..GEO气象卫星长线阵载荷扫描成像几何校正方法[J].航天器工程,2025,34(2):59-65,7.
