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地球同步卫星常用于通讯、气象、广播电视、导弹预警、数据中继等方面,以实现对同一地区的连续工作。在遥感应用中,除了气象卫星外,一个突出的应用就是通过地球同步轨道上的4颗跟踪和数据中继卫星系统高速率地传送中低轨道地球观测卫星或航天飞机所获取的地球资源与环境遥感数据。世界上第一颗地球同步卫星是1964年8月19日美国发射的“辛康”(syncom)3号。中国于1984年4月8日、1986年2月1日和1988年3月7日分别发射3颗用于通信广播的地球同步卫星。近几年对于同步卫星的考查十分频繁,本文对于此问题进行一定的探讨。
Geostationary satellites are commonly used in communications, meteorology, radio and television, missile warning, data relay, etc. to achieve continuous work in the same area. In remote sensing applications, in addition to meteorological satellites, an outstanding application is the high rate of transmission of Earth resources and environment acquired by low orbit orbiting earth observation satellites or space shuttles through 4 tracking and data relay satellite systems on geosynchronous orbit Remote sensing data. The world’s first geostationary satellite is the “syncom” No. 3 launched by the United States on August 19, 1964. China launched three geostationary satellites for communications broadcasting on April 8, 1984, February 1, 1986 and March 7, 1988, respectively. In recent years, the investigation of synchronous satellites is very frequent, this article discusses this issue for some.