单脉冲雷达测角幅相不一致影响及校正

现代雷达型空空导弹广泛采用比幅单脉冲测角方法来确保测角精度需要和差支路保持幅相一致性,但在实际工程中三路接收通道很难保持完全一致。为了不影响导引头的测角性能,分析了导致和差支路不一致的原因及其对测角精度的影响,并提供了一种和差支路幅相不平衡数字校正和失调角归一化处理的方法,并在一套雷达型导引头样机上进行了验证。试验结果表明,这种补偿方法是可行的。

Effect and compensation of amplitude and phase inconsistency in angle measurement by monopulse radar

The method of amplitude comparison monopulse angle measurement is widely used in modern radar type air-to-air missiles at present.The amplitude and phase consistency among the receiving channels is the key factor for the accuracy of angle measurement.It′s hard to make sure that the receiving channels are consistent.The cause of amplitude and phase imbalances in sum and difference channels,amplitude and phase imbalances influences over angle measurement accuracy are analyzed.A method of digital calibration in the amplitude and phase imbalances of sum and difference channels,and of angle error normalization processing is provided.