1引言□□随着欧洲管理地区事务能力的增强和推动军事一体化进程步伐的加快,近年来欧洲在军事航天领域正逐渐摆脱对美国的依赖,建立自己的航天侦察体系,其中雷达成像卫星系统就是一例。经过多年的努力,欧洲两大新型雷达成像卫星系统———德国“陆地合成孔径雷达”(TerraSAR)和 1 INTRODUCTION As Europe’s ability to manage regional affairs has been enhanced and the pace of military integration has been accelerated, Europe has gradually freed itself from dependence on the United States in the field of military space and space in recent years to establish its own space reconnaissance system, in which the Radar Imaging Satellite System Just one example. After years of hard work, two new radar imaging satellites in Europe --- TerraSAR (German Terrestrial Synthetic Aperture Radar) and