摘要
相位差测量技术是相位干涉测向系统的关键技术之一,相位差的测量精度直接影响系统的测向精度。为解决某相位干涉测向系统中直接扩频信号相位差的提取问题,本文对脉冲压缩与载波恢复两种相位差提取方法的原理进行了分析,通过Matlab对不同信噪比和多普勒条件下两种方法的相位差提取精度进行了仿真。
Phase difference measurement is one of key technologies for phase interferometer direction finding systems.Measurement accuracy of phase difference directly affects direction finding accuracy of the system.In order to achieve phase difference extraction of direct spread spectrum in a direction finding system,principle of pulse compression and carrier recovery for phase difference extraction is analyzed.Accuracy of phase difference extraction by using these two method is simulated by using Matlab at different SNRs and Doppler conditions.
作者
张毅
李喜民
李康
Zhang Yi;Li Ximin;Li Kang(Xi'an Electronic Engineering Research Institute,Xi'an 710100)
出处
《火控雷达技术》
2018年第2期26-30,51,共6页
Fire Control Radar Technology
基金
国家支撑项目40405050101
关键词
直接扩频
脉冲压缩
载波恢复
相位差
direct spread spectrum
pulse compression
carrier recovery
phase difference
