本文概要阐述锁相技术中一些新进展,讨论它们应用于空间通信后出现的某些问题,并提出笔者一些粗浅的看法。应当指出,在空间信息传递,大都采用相干通信,因此信号的相位噪声和相位稳定度是主要技术问题之一。也是本文考虑问题主要出发点之一。 This article outlines some of the new advances in phase-locked technologies, discusses some of the problems that arise when they are used in space communications, and puts forward some superficial views. It should be pointed out that in the spatial information transmission, most of them use coherent communication, so the signal phase noise and phase stability are one of the major technical problems. It is also one of the main starting points for this article to consider the issue.