摘要
针对基于标量信号的测角公式难以准确给出多径影响的问题,本文依据相控阵雷达波束形成的方法以及单脉冲相位和差测角的原理,推导出基于矢量信号的相控阵雷达相位和差测角公式,同时结合无源定位下多径效应的原理,深入分析了该情况下多径效应对相位和差测角的影响。仿真结果表明,基于矢量信号的相位和差测角公式能够量化多径效应对测角的影响,而且便于量化分析各类抑制措施对多径效应的改善程度,最后通过实验验证了新方法的有效性和准确性。
The formula of angle measuring based on scalar signal can not evaluate the disturbance of multipath scattering to angle measuring accurately. Based on the principle of phased array radar beam forming and monopulse angle measuring, this paper derived the formula of angle measuring based on vector signal. Meanwhile, combined with the principle of passive multipath effects, a deep analysis of multipath effects on angle measuring was made. The simulated results showed that the formula of angle measuring based on vector signal could evaluate the disturbance of multipath scattering to angle measuring accurately and make a quantitative analysis on the effects of various multi-path suppression measures easily. It also verified the effectiveness and accuracy of the new method.
出处
《电子测量技术》
2009年第7期18-21,共4页
Electronic Measurement Technology
关键词
相控阵雷达
单脉冲测角
多径效应
无源定位
phased array radar
monopulse angle measuring
multi-path effects
passive location
