摘要
针对舰船一维距离像目标识别中目标位置、海面起伏和雷达信号形式等参数不确定造成识别困难的问题,建立了舰船散射中心模型,对舰船目标的一维距离像进行仿真,研究了距离像对姿态角、海面起伏、雷达带宽以及加窗处理的敏感性,并通过CST微波工作室对仿真结果进行验证。结果显示,一维距离像对方位角具有强敏感性,但在一定角度范围内,一维距离像具有相似性;雷达带宽越窄,一维距离像的方位角敏感度越低;海面起伏越小,海面的多径效应越显著;加窗处理可以抑制距离旁瓣,但同时展宽主瓣,降低了雷达距离分辨力。
The uncertain of target position,fluctuation of sea surface and radar parameters cause difficulties in radar HRRP automatic target recognition.Regarding the issues above,a ship scattering center model is built,the HRRP of ship is simulated,and the sensitivity of HRRP to attitude angle,sea-surface fluctuation,radar bandwidth and windowing is studied.Finally,the simulation results are validated by CST Microwave Studio.The results show that HRRP has a strong sensitivity to attitude angle,whereas within a certain range of angles,there is similarity between HRRPs;the narrower the radar bandwidth,the lower the angle sensitivity;the more calm the sea-surface,the more multipath effect be pronounced;windowing can inhibit the distance side lobes,whereas widen the main lobe,which reduce radar distance resolution
作者
陈宏昆
卢建斌
CHEN Hongkun;LU Jianbin(School of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《电子科技》
2018年第4期29-32,共4页
Electronic Science and Technology
基金
国家自然科学基金(61601492)
