空面导弹雷达导引头抗多路径效应研究

Research on Anti-Multipath Effect for Radar Seekers on Air-to-surface Missiles

本文对空面导弹雷达导引头抗多路径效应进行机理分析的基础上,结合导引头外场试验,认为要求导引头沿布鲁斯特角照射目标或者采用垂直极化照射的传统观点都不足以克服空面导弹多路径效应。作者通过外场试验证实在对地探测中存在多路径现象,且属于非稳态现象,为此,提出通过弹道设计减小多路径效应持续时间,可以有效抑制多路径效应,并通过飞行靶试验证了措施的有效性。

Analysis of multipath effect on radar seekers on air-to-surface missiles and seeker field tests lead to a conclusion that the traditional methods,including illuminating targets along Brewster angle and employing vertical polarization are not sufficient to suppress multipath effect.Field test results show that unstable multipath effect exists in the process of ground target detection of radar seekers on air-to-surface missiles.In this paper,an anti-multipath effect method is proposed.With this method,the duration of multipath effect can be shortened through missile trajectory design optimization,so that the multipath effect is suppressed effectively.The flight test results prove the effectiveness of the proposed method.