大入射余角下无线电引信海杂波模型

Sea Clutter Model of Radio Fuze at Large Incidence Complementary Angle

为解决无线电引信的超低空对抗海杂波干扰这一技术难题,对大入射余角下的无线电引信海杂波模型进行研究。根据试验数据研究引信在大入射余角下的海面后向散射系数,通过物理海面建模和网格划分,建立引信的随机海面回波模型,提供海杂波功率理论计算方法。对比仿真结果与引信的试验结果表明:模型与实测数据一致性较好,为引信的海杂波特性分析提供了理论基础。

In order to solve the technical problem of radio fuze anti-sea clutter jamming at ultra-low altitude,the sea clutter model of radio fuze under large incident complementary angle is studied.According to the test data,the sea surface backscattering coefficient of the fuze is studied under the condition of large incident grazing angle.Through physical sea surface modeling and grid division,the random sea surface echo model of the fuze is established,and the theoretical calculation method of sea clutter power is provided.The comparison between the simulation results and the fuze test results shows that the consistency between the model and the measured data is good,which provides a theoretical basis for the analysis of the sea clutter characteristics of the fuze.