时统信号数字信道传输误差分析与研究

通过对时统信号的理论分析和实际测试验证，准确地分析出时统信号经数字信道传输产生的误差来源于信道的群时延失真和增益频率特性的影响，同时提出了克服传输误差的三种方法：第一种是改善时统信号特性的发送补偿法，已在现有设备上通过修改编码软件方法实现；第二种是改善信道传输特性的信道拓宽法，已在现有设备的伴音信道上验证；第三种是改善时统设备接收适应能力的接收均衡法。完成了均衡器的设计和制作。并通过了实际测试验证。最后对三种方法进行了对比分析。

Analysis of the Transmission Error of Digital Timing Signal Channels

The source of errors of timing signals caused by transmission through digital channels, group delay and gain frequency response can be accurately analyzed based on theoretical analysis and actual measurement of timing signals. Three methods are proposed in this paper to reduce transmission errors. The first one is transmission compensation to improve timing signals and the method has already been implemented on existing equipment through changing coding software. The second method is channel broadening in order to improve transmission performance and has also been verified on existing equipment. The third method is receive equalizing aiming at improving receiving performance of timing equipment. The equalizer has been designed and implemented and has been verified through actual measurement. Finally, the three methods are compared and analyzed.