| HD digital satellite TV transmission in North America,Europe and Japan and other regions have developed,to 2012,the total number of digital TV users China has exceeded one hundred million,by the end of 2013,of which 3 million 200 thousand households digital cable family will be able to watch high-definition tv.China has been vigorously advocating the concept of the national digital cable network,trying to digitize all cable networks by 2015.With the establishment of the national digital cable television network,digital high-definition TV programs will become the inevitable trend of TV programs in the future.In 2010,the State Administration of radio,film and television put forward a definite request for the configuration of earth station equipment.In accordance with the requirements of the Jiangxi provincial radio and Television Bureau approved the satellite earth station on the existing equipment renovation,a new independent broadcast uplink system project.Based on this project,this paper analyzes the development of digital satellite broadcasting and TV system at home and abroad.This paper introduces the system constitution and principle of satellite earth station,expounds the design and Realization of the project,and finally passes the system test.The test result shows that the system configuration of the project with radio and TV satellite earth station system configuration requirements,the system meets the stream of radio and TV satellite earth station of stream technology index in a testing of technical requirements,relevant technical requirements index of the system meets the uplink uplink earth station satellite broadcast television indexes in the test this system,digital video and audio technology to meet the requirements of radio and TV satellite earth station digital technology index test of audio and video,the system can meet the measurement of C band satellite digital TV transmission refers to the demand with frequency bandwidth. |
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