一、同步的作用及其方式在数字遥测系统中,同步是一个十分重要的问题。一个遥测系统能否正常工作,在很大程度上取决于同步的质量。若同步不良,将导致遥测质量下降,甚至使遥测失效。我们知道,数字遥测所传送的是数字信号。这些信号是从发端一位一位地发送的,然后在收端一位一位地接收。为了将收到的信号复原,就要对码元进行正确无误的判决。这就要求判决用的 First, the role of synchronization and the way In the digital telemetry system, synchronization is a very important issue. Whether a telemetry system can work normally depends very much on the quality of the synchronization. If poor synchronization, will lead to the quality of telemetry decline, and even telemetry failure. We know that digital telemetry transmits digital signals. These signals are sent from the originator bit by bit, and then received at the receive end. In order to recover the received signal, it is necessary to correctly determine the symbol. This requires judgment