基于短时FFT的相控阵远场校准方法  

Calibration Method Based on Short-time FFT of Phased Array in Far-field

作　　者：汪海[1] 王侃[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2011年第12期65-67,71,共4页Modern Radar

摘　　要：相控阵阵面在外场进行幅相测试时,地面折射波引起的多路径效应是一个主要的误差来源。文中介绍了一种在短时FFT基础上、从地面折射波叠加在直射波上的合成波信号中求解直射波信号的方法,并通过软件仿真采用了该方法校准幅相误差后、阵面波束性能的改善情况。The muhipath effects by refringent wave from ground is a main error source, when doing the amplitude-phase measure for phased array in out-field. In this paper a method of extracting direct signal from synthetic signal is presented, which based on the short-time FFT; and also the improving situation of preformance is presented in array beam after calibrating amplitude and phase error in this method through software simulation.

关 键 词：相控阵 多路径效应 短时FFT 校准 阵面波束 

分 类 号：TN821.8[电子电信—信息与通信工程]