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随着载人航天测控网络的不断扩大,以及新的小型测控站的相继出现,给通信网络的建设提出了更高要求。新的小型测控站传输的信息量相对较小,采用光纤网络传输或者卫星网络传输,将对带宽资源构成极大的浪费,同时资金投入也是一个制约问题。微波扩频通信系统采用直接序列扩频技术,能够在50km左右的距离上完成信息的传输,同时具有较强的保密性和抗干扰性,非常适合小型测控站的信息传输及其联网工作。本文主要介绍了微波扩频通信技术并探讨了在航天测控系统的应用。
With the continuous expansion of manned space network, as well as the emergence of new small-scale control stations, higher requirements are put forward for the construction of communication networks. The new small-scale control station transmits a relatively small amount of information, the use of optical fiber network transmission or satellite network transmission, will constitute a tremendous waste of bandwidth resources, while capital investment is also a constraint. Microwave spread spectrum communication system uses direct sequence spread spectrum technology, which can complete the transmission of information at a distance of about 50km. It also has strong confidentiality and anti-interference, and is very suitable for the information transmission and networking of small control stations. This article mainly introduces the microwave spread spectrum communication technology and discusses the application in the aerospace measurement and control system.