卫星电视信号的传输时间与时延,对节目播出时刻和不同地区节目切换有直接影响。本文应用微型计算机分析方法,给出通信广播卫星传送电视节目时,播出时刻的提前量、各地接收站的时延、不同地区的卫星地面发射站之间的电视节目切换时差校正值。一、传输时间与时延卫星电视节目通常是由卫星地面站将电视信号发射到通信广播卫星,再转发到卫星波束覆盖区的各个地面接收站。由于卫星地面站和接收站到卫星之距甚远,经卫星转发的电视信号电波,需经过一定的时间才能传送到接收点。电波由卫星地面发射站传输到卫星,或由通信广 Satellite TV signal transmission time and delay, the broadcast time of the program and program switching in different regions have a direct impact. In this paper, the microcomputer analysis method is used to give the correction value of TV program switching time difference between satellite terrestrial transmitting stations in different areas when the telecine broadcasting satellite transmits the television program, the advance time of broadcasting time, the receiving station’s delay in each place. First, the transmission time and delay Satellite television programs are usually satellite earth stations will be television signals transmitted to the communication and broadcasting satellite, and then transmitted to the satellite beam coverage area of ​​the ground receiving station. Due to the far distance between the satellite ground station and the receiving station to the satellite, the television signal transmitted by the satellite takes a certain amount of time to be transmitted to the receiving point. Radio waves are transmitted from satellite ground transmitting stations to satellites or by communications