强干扰下非线性放大器对伪码测距性能的影响研究  

Effect of nonlinear amplifier on pseudo-code ranging performance under strong interference

作　　者：刘涛[1] 蒙艳松[1] 张立新[1] 

机构地区：[1]西安空间无线电技术研究所,陕西西安710071

出　　处：《现代电子技术》2014年第23期91-93,96,共4页Modern Electronics Technique

摘　　要：高功率放大器(HPA)作为高精度伪码测距系统中发射链路的重要组成部分,会将非线性失真引入到信号中,影响导航信号的测距精度。在干扰信号存在的条件下,放大器引入的幅频失真和相频失真也更加复杂。通过理论推导和仿真分析,研究干扰条件下的非线性特性对伪码测距的影响,给出了放大器工作在不同工作点下的伪码测距误差结果。研究结果对实际工程有一定的参考价值。As an important part of the highprecision pseudocode ranging system,the highpower amplifier（HPA）affects the ranging accuracy of navigation signal due to the introduction of nonlinear distortion to the signal. Under the condition of existence of the interference signal,the amplitudefrequency distortion and phasefrequency distortion introduced by amplifier become more complicated. Through theoretical derivation and simulation analysis methods,the influence of nonlinear feature on pseudocode ranging accuracy under the condition of interference is studied in this paper. The pseudocode ranging errors of the amplifier working in different OBO are offered. The important suggestion for the project is provided in this paper.

关 键 词：高功率放大器 非线性失真 伪码测距 干扰 

分 类 号：TN967.34[电子电信—信号与信息处理]