基于激光探照灯的雷达隐身性研究与分析

Research and Analysis of Radar Stealth Based on Laser Searchlight

以某舰船的激光探照灯为研究对象,建立了产品三维结构的耦合模型。基于ANSYS平台的弹跳射线法,利用标准体标定了所选仿真方案的精度,研究了结构差异性对雷达散射特性的影响,从而评估了产品对不同频率、极化域和角度域下的散射特性。同时优选符合隐身性能要求的设计方案,并提供了散射特性的优化建议。研究结果表明,结构差异性在特定角域或频率上都有其自身优势,产品结构设计过程中,应尽量使面元处于阴影区,可较大程度上改善产品的雷达散射特性。该研究对评估产品外形设计的合理性及产品隐身性能优化具有一定的参考意义。

This article used the laser searchlight of a ship as the research object to establish a coupling model of the three-dimensional structure of the product.Based on the bouncing ray method of ANSYS platform,the accuracy of the selected simulation scheme was calibrated by using the standard body,and the influence of the structural difference on the radar scattering characteristics was studied,so as to evaluate the scattering characteristics of the product under different frequencies,polarities and angular domains.At the same time,the design scheme meeting the requirements of stealth performance was selected,and the optimization suggestions of the scattering characteristics were provided.The results show that the structural difference has its own advantages in the specific angular domain or frequency.In the process of product structural design,the plane element should be in the shadow area as far as possible,which can greatly improve the radar scattering characteristics of the product.The research has a certain reference significance for evaluating the rationality of the shape design of product and the optimization the stealth performance of product.