单脉冲测角在BM突防干扰机上的应用

Application of Monopulse Angle Measurement System on BM Penetration Jammer

高分辨雷达(HRR)使用目标HRRP检测目标,由此要求弹道导弹(BM)突防干扰机生成的多假目标信号中包含BM弹头HRRP信息,HRRP长度是HRRP的一个重要特征,需要通过测量雷达观测角计算得到,BM突防干扰机自旋,自身三维姿态难以提取,二维单脉冲测角系统难以应用,一维单脉冲测角系统根据自旋特点,可间断地测得雷达观测角,干扰机和BM弹头运动以及干扰机自旋对测角精度影响较小,间断得到的雷达观测角可以用来计算BM弹头HRRP长度,指出了干扰机章动是影响测角精度的主要因素,最后说明了探讨的方法对目前BM突防干扰机设计具有一定实际工程意义。

Broadband high-resolution radar （HRR） uses target＇ s high-resolution radar range profile （HR- RP） to identify targets. Therefore, it is necessary for ballistic missile （BM） penetration jammer to be with false echo signal including BM HRRP information. BM HRRP length is an important character of BM HRRP. For ob- taining this, the penetration jammer needs to measure radar angle of arrival （AOA） and perform computing. As BM penetration jammer rotates, it is difficulty to pick-up the-dimension attitude itself; using two-dimension mono- pulse angle measurement system is improper. Then according to jammer rotation character, it is feasible to use one-dimension monopulse angle measurement system to measure radar AOA discontinuously. Through analysis, it shows that the jammer＇s rotation and moving as well as BM warhead~ moving make little effect on angle measure- ment. The result of radar AOA measurement can be used to produce BM warhead HRRP length. And it is indica- ted that the main factors affecting angle measurement is jammer＇ s nntation. At last, description that the way discussed here is significant for BM penetration jammer practical engineering design at present is provided.