基于半阵相位和差法的相控阵雷达测角方法研究

Reserch into Angle Measurement Method of Phased Array Radar Based on Half Array Phase Sum Difference Method

针对相控阵雷达测角问题,给出了基于半阵相位和差法的相控阵雷达测角方法。首先介绍了比相和差波束的构成方法,然后对一维、二维阵列半阵相位和差法进行了数学建模和分析。对一维、二维阵列和差波束形成及鉴角曲线进行仿真,重点在一维相控阵架构上,利用本方法对不同引导角下偏离引导角不同角度的目标在不同相位误差和幅度误差条件下进行测角仿真并给出仿真分析。最后对本文进行了总结,同时给出可提升测角精度的建议方法。

In order to solve the angle measurement problem of phased array radar,this paper presents an angle measurement method of phased array radar based on half array phase sum difference method.Firstly,the phase comparison sum difference beam formation method is introduced,and then the mathematical modeling and analysis of one-dimensional and two-dimensional array half array phase sum difference method is carried out.The sum difference beamforming and angle discrimination curves of one-dimensional and two-dimensional array are simulated.Focusing on the one-dimensional phased array architecture,this method is used to simulate and analyze the angle measurement of targets with different deviation angles under different guidance angles and different phase errors and amplitude errors.Finally,this paper is summarized,and some suggestions are given to improve the accuracy of angle measurement.