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1.前言美国地观(Earth Watch)公司研制的第一颗商用高空间分辨率卫星先鸟(Early Bird)1号预定1996年8月发射。这颗卫星上载有空间分辨率为3m的光学传感器。1997年以后的两年间,还计划发射3家公司的商用高空间分辨率卫星~([1])。商用高空间分辨率卫星发射计划如此闹猛的背景有以下两点:(1)社会的变化随着冷战的结束,被迫由军用向民用
1. Introduction The first commercially available Early Bird 1 commercially developed by Earth Watch is scheduled to launch in August 1996. The satellite contains an optical sensor with a spatial resolution of 3m. Two years after 1997, it is also planned to launch commercial high-spatial-resolution satellites ([1]) from three companies. Commercial hyperspace satellite launch plans so fickle in the context of the following two points: (1) changes in society With the end of the Cold War, forced by the military to civilian