湖北卫星地球站数字压缩系统兼容性测试实践

Practice of Digital Compression System Compatibility Test in Hubei Earth Station

卫星地球站使用的编码器、复用器等数字压缩设备均遵循MPEG2标准规范设计,虽然现在MPEG2标准已经非常成熟,但不同设备厂家之间生产的设备仍然存在兼容性问题,地球站如果考虑数字压缩系统设备的更新改造,就必须考虑保证新的系统与原有系统兼容,否则在新旧系统切换时可能导致大量用户接收机不能正常接收卫视节目,本文就介绍了我站2013年在编码、复用数字压缩系统更新前进行的主流品牌编码器,复用器兼容性测试的实际案例。

Digital encoder and multiplexer of satellite earth station follow MPEG-2 Standard Specification.Although the MPEG-2 standard has been very mature now, but the production between different equipment manufacturers still exist compatibility problems.This paper introduces digital compression system compatibility test practice of Hubei Earth Station in 2013.