摘要
针对掠海目标的低探测性问题,以蒙特卡洛法生成的PM(Pierson-Moskowitz)海洋谱粗糙面模拟真实海面,为消除人为截断粗糙面引起的边缘衍射,引入三维锥形波,结合稀疏矩阵平面迭代及规范网格法(SMFIA/CAG)与矩量法(MOM)求解目标与粗糙面的迭代积分方程。计算分析了掠海巡航导弹在高频段(HF)下的电磁散射特性,结果表明根据不同入射方向,采用相应的极化方式才能获得最佳探测效果。这对利用天波超视距雷达对抗超低空目标具有一定的参考价值。
For low detection situation of the target flying over ocean, a random sea surface is generated based on Monte-Carlo method combined with the PM （Pierson-Moskowitz）spectral function. In order to remove the edge diffraction caused by artificially cutting off the rough surface, three dimensional tapered wave is introduced. The iterative integral equation is solved by the sparse-matrix flat-surface iterative ap- proach-canonical grid （SMFSIA/CAG） method and the Method of Moment （MoM）. Scattering character- istics of the cruise missiles flying over the ocean the surface are calculated and analyzed, which show that the best detection can realized by adjusting corresponding polarization based on different incidences. These conclusions have some reference for detecting low altitude targets with beyond visual range radar.
出处
《战术导弹技术》
北大核心
2017年第2期58-61,共4页
Tactical Missile Technology
