几年前日本外务省和防卫厅曾透露过日本要研制军用照相侦察卫星的消息,当时打算采用回收胶卷或数传图片,后来就未见报道。但实际上日本并未停止这项工作,日本相继发射2颗海洋观测卫星和雷达地球资源卫星,虽然分辩率不高(5～10米),但试验了多种照相机功能,而且日本早在初期的技术 A few years ago Japan’s Ministry of Foreign Affairs and Defense Agency had disclosed that Japan wanted to develop military photographic reconnaissance satellites. At that time, plans to use recycled films or digital pictures were not reported. In fact, Japan did not stop this work. Japan has successively launched two ocean observation satellites and a radar earth resource satellite. Although the resolution is not high (5 to 10 meters), a variety of camera functions have been tested and Japan is still in its infancy Technology