遥感技术是一门新的综合性技术学科,但每一种学科都不是独立地、割裂历史地发展.如果从伽俐略发明望远镜开始算起,遥感技术已有三、四百年的历史了。就是从第一张空中摄影的象片来说也有一百多年的历史了。但在这样漫长的年代里,发展是缓慢的。本世纪初,由于航空事业的逐渐发展,航空摄影也从单纯的以军事侦察为目的开始走向民用。到本 Remote sensing technology is a new comprehensive technology subject, but each discipline does not develop independently and historically, and if the telescope was invented by Galileo, the remote sensing technology has a history of three or four hundred years. It is also the history of more than a hundred years from the first aerial photographic image. But in such a long time, development is slow. At the beginning of this century, due to the gradual development of the aviation industry, aerial photography began to move toward civilian use from the simple purpose of military reconnaissance. To this