遥感是从远处进行的非接触测量,本文所介绍的遥感技术主要是指从卫星和飞船对地球表面及其环境进行的非接触测量。遥感技术的发展虽然不到廿年,但却取得日新月异的成果,受到普遍重视。1962年在美国召开的第一届遥感会议,只有一国70名与会者,到1972年的第八届会议时,就有许多国家近2000名代表参加。1974年第九届会议出版了包括数百篇报告的三大本会议录。星载遥感技术和尖端武器一样,成了苏美两个超级大国争霸全球、对外扩张的工具。两 Remote sensing is a non-contact measurement from a distance. The remote sensing technology introduced in this paper mainly refers to the non-contact measurement of the Earth’s surface and its environment from satellites and spacecraft. Although less than 20 years have passed since the development of remote sensing technology, rapid progress has been made in the field of remote sensing, which has received universal attention. At the first remote sensing conference held in the United States in 1962, there were only 70 participants in one country. By the eighth session in 1972, nearly 2,000 representatives from many countries attended the conference. At the Ninth Session in 1974, there were three Proceedings of the Conference which included hundreds of reports. Space-borne remote sensing technology, like cutting-edge weapons, has become a tool for the two superpowers in the Soviet Union and the United States to win over the world and expand abroad. Two