海面多路径效应对制导精度影响研究

Research of Sea Surface Multipath Effect on Guidance Accuracy

为分析某型导弹在飞行试验中出现的脱靶量大,未命中目标原因,分析导引头被动雷达和红外制导信息,对影响被动雷达测角精度因素进行分析,指出在低空飞行环境下,海面多路径效应严重影响测角结果,扰乱飞行过程中的弹体稳定性,导致雷达测角精度误差大,无法向红外制导交班。结合半实物仿真,结果表明:海面多路径效应对被动雷达测角品质带来影响。研究结果对被动雷达制导及复合制导系统设计具有一定的指导意义,对靶场试验设计、评定具有一定的借鉴意义。

In order to get the reason of large miss distance of a certain type of missile in test,information of the seeker which both passive radar and infrared guidance are analyzed,and multipath effect is pointed out in the low-altitude flight environment for affecting the accuracy of angle measurement by passive radar,disturbing the stability of missile,and take a result of impossible to shift to the infrared guidance.Combined with the semi-physical simulation,result shows that multipath effect has an impact on the quality of passive radar measurement.It has certain guiding significance for the design of passive radar guidance and composite guid⁃ance system,and also has certain reference significance for the design and evaluation of test.