卫星通信中频谱反转的成因与处理

Causes and processing of spectrum inversion in satellite communication

变频的目的是为了使信号能够在特定的信道内利用合适的频率对信号进行有效传输,是无线通信系统中需要经常涉及到的问题。频谱反转一般是在传输过程中由于变频而造成的接收端所收与发射端所发的信号频谱相反的现象。本文对频谱反转产生的原因以及如何在基带系统中处理的方法进行了分析和介绍。

The purpose of frequency conversion is to enable signals to transmit signals efficiently at a suitable frequency within a particular channel,which is a problem that needs to be frequently involved in wireless communication systems.The spectrum inversion is caused by frequency conversion,and the result is that the spectrum of the transmitted signal and the received signal are opposite.This paper analyzes and introduces the causes of spectrum inversion and how to deal with them in baseband systems.