subject: Radio And Tv Satellite Uplink On The System Transformation - Radio And Tv, Satellite Tv, Recording - [print this page] Xinjiang satellite uplink transmission system is now 6 sets of 5 sets of television programs and radio programs, radio programs, television programs, the use of the right channel for transmission, and to broadcast television programs on the satellite signal from the right channel separation separately the star, the need for reform of existing coding transmission system. In addition, the system must also complete a set of original television and seven sets of encoded broadcast satellite uplink transmission system.
System requirements 7 sets of TV shows in television transmission multiplex by the code to 331 rooms, 7 sets of stereo radio stations also broadcast radio code reuse in later transferred to the 331 room, signal multiplexing as a Way multi-program stream, through the optical cable, microwave transmission to the satellite uplink station routing. 6 sets of satellite uplink station in Xinjiang, Xinjiang TV shows and seven sets of radio stereo radio and television programs launched by the modulation, use the Asia-Pacific 6 satellite on satellite. In addition a set of 7 sets of television programs and radio programs launched by the modulation, use of satellite Zhongwei 1 star.
A system rebuilding 1. System Reform Task The satellite uplink system reform has the following main tasks:
* 7 sets of television programs encoding, multiplexing, equipment rooms using two-way cable TS transport stream;
* 7 sets of stereo broadcasts coding, multiplexing, 1 + l cross hot backup and the use of optical fiber transmission to the 331 room Two TS transport stream;
* TV and radio programs transmitted multiplexed in room 331, and through multi-path from the transmission to satellite uplink station;
* 331 transmit signals to the satellite uplink station to separate Xinjiang TV on satellite, and "going out" on the satellite signal modulation on the satellite;
* Package encoding, transmission, modulation on the DVB-S satellite equipment meets international standards, compatible with existing satellite receiver to receive, while 6 sets 7 sets of stereo television broadcasting uses 36 MB bandwidth, 1 set of stereo TV sets Radio 7 the bandwidth used by 7 trillion remain unchanged;
* Major hardware equipment condition monitoring, fault alarm, providing unified management of network equipment failure alarm monitoring platform;
* All splitter switch with power-down function of the first way through, automatic latency switching, delay time can be adjusted, manually, automatically switch, switch and display the working state of alert, with a common computer-controlled interface The switch to the computer monitor.
The transformation of the specific work in the following two aspects:
(1) codec and transmission parts * 7 Way Radio broadcasts coded multiplexing;
* 7 Way TV stations coding multiplexing;
* 331 rooms multiplexing transmission system; * Xinjiang TV and going out of the project satellite uplink signal demultiplexing / multiplexing, distribution.
(2) upstream modulation and antenna and feeding system parts
* New TV on the satellite launched in Xinjiang modulation, frequency conversion system;
* 12 meter satellite antenna replacement antenna servo systems that replace the beacon receiver, antenna controller;
* New integrated fault alarm monitoring network management system;
* Power amplifier and antenna used in conjunction with each other, mutual backup.
2. System Block diagram Block diagram of satellite uplink system shown in Figure 1.
Figure 1 2, system
System consists of five parts, namely, code reuse part of the television, radio code multiplexing part, 331 multiplexing transmission parts, satellite uplink stations demultiplexing / multiplexing transmitter and transmission systems reform, monitoring of fault alarm system.
