单脉冲雷达幅相不一致对测角特性的影响

Effect of Amplitude and Phase Inconsistency in Angle Measurement by Monopulse Radar

在导弹武器系统中,跟踪制导雷达系统的性能是决定武器系统作战效能的关键因素。比幅单脉冲测角是跟踪制导雷达采用的重要角跟踪技术。分析了比幅单脉冲雷达测角原理,研究了角误差信号的数学模型,给出了天线波束偏置角的最优数值。通过仿真分析,分别研究了比幅单脉冲雷达幅相不一致对测角精度和测角灵敏度等测角特性的影响,指出幅度不一致对测角特性的影响要大于相位不一致对测角特性的影响。

In missile weapon system, the characteristic of tracking-and-guiding radar plays an important role in weapon system＇ s operational effectiveness. The method of angle measurement is widely used at present by monopulse radar. At first the article introduced the theory of amplitude comparison monopulse angle measurement in radar, and then proposed the math model of angle error and the optimized antenna beam bias angle. The result shows the effect of angle measurement accuracy and angle measurement sensi- tivity in amplitude comparison monopulse radar and point that the amplitude inconsistency is worse than phase inconsistency on angle measurement characteristic.