无线电引信近场海背景特性试验研究

Experimental Research on the Near-Field Sea Background Characteristic of Radio Fuze

引信的低空性能是空空导弹超低空作战效能优劣的关键要素,特别是在近场海背景下,更需要对无线电引信的能力特性进行评估。本文基于多尺寸粗糙海面模型,运用物理光学法和物理绕射法及四道复合散射预测方法,首先建立了海面目标电磁散射场及复合散射回波的理论模型。接着,仿真分析了不同波段、不同海情、不同交会状况下,无线电引信的海背景回波,以及与目标的复合散射回波特性。最后,通过开展对海面的低空挂飞近距回波特性试验,以及对海面与目标复合的回波特性试验,获得无线电引信的海背景回波数据,并与仿真结果进行对比分析。结果显示,多普勒回波幅度仿真与实测结果基本一致。

The low altitude performance of the fuze is the key factor for the combat effectiveness of air-to-air missile at ultra-low altitude.Especially,it is more necessary to evaluate the capability characteristics of the radio fuze in the near-field sea background.Firstly,based on the rough sea surface model,the theoretical models of the electromagnetic scattering field and the composite scattering echo of sea surface targets are established by using the methods of physical optics,physical diffraction and four-channel composite scattering prediction.Secondly,the sea background echo of the radio fuze and the composite scattering echo of the target are simulated and analyzed under different wave bands,different sea conditions and different rendezvous conditions.The sea background echo data of the radio fuze is obtained by carrying out the low altitude flying short-range echo characteristic test on the sea surface and the compound echo characteristic test on the sea surface and the target.The comparison of the results between the tests and simulations shows that the Doppler echo amplitudes are basically consistent.