高分辨率光学遥感卫星宽幅成像技术发展浅析

幅宽是影响高分辨率光学遥感卫星应用的重要指标。本文分析了国际上高分辨率光学遥感卫星宽幅成像的主要途径,介绍了多CCD内视场拼接、多相机外视场拼接、敏捷成像、多星组网等主流宽幅成像方式及其数据处理的技术特点,同时分析了相机垂轨摆扫成像、大面阵相机敏捷拼幅成像等新型星载宽幅影像获取方式,有助于系统地了解高分辨率光学遥感卫星宽幅成像技术进展,对于展望其发展趋势具有一定的参考作用。

Study on the Development of Wide Swath Imaging Technology about High-resolution Optical Remote Sensing Satellites

Swath width is one of the important factors influencing the application efficiency of high-resolution optical remote sensing satellites. This paper analyzes various approaches for wide swath imaging of high-resolution optical remote sensing satellites all over the world, among which characteristics of four mainstream wide swath imaging modes separately by inner FoV stitching of multiple sensor lines, external FoV stitching of multiple cameras, agile imaging and multi-satellite network are introduced, on the aspect of raw image data acquisition and process; also, this paper analyzes the other two novel wide swath imaging modes separately by whiskbroom scanning imaging of spaceborne sensors and agile splicing imaging of large-area array camera, which are potentially available according to the technological development. The research of this paper is helpful for a comprehensive acquaintance of wide swath imaging technologies for high-resolution optical satellites and also an outlook for the trend.