两坐标雷达天线俯仰对小目标探测影响分析  

Analysis of influence of two-dimensional radar antenna pitch on small target detection

作　　者：李桂祥[1] 陈智超 王晨曦 郑迅 LI Guixiang;CHEN Zhichao;WANG Chenxi;ZHENG Xun(Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2021年第4期240-243,共4页Journal of Air Force Early Warning Academy

摘　　要：针对两坐标雷达对小目标探测难度大的问题,基于杂波模型和目标模型,给出了信噪比和信杂比表达式,对两坐标雷达天线俯仰对小目标探测影响进行了定量分析.定量分析表明,俯仰角的变化会影响目标信噪比和信杂比,在天线增益值最大处目标信噪比最大;受杂波影响,天线俯仰角降低会导致信杂比的下降.这为两坐标雷达根据战时任务的需要调整天线俯仰角提供了依据.Aiming at the difficulty of two-dimensional radar detecting small targets,this paper is based on clutter model and target model to present the expressions of signal-to-noise ratio(SNR)and signal-to-clutter ratio(SCR),and then quantitatively analyzes the influence of two-dimensional radar antenna pitch on small target detec-tion.The quantitative analysis result shows that the change of pitch angle affects the SNR and SCR of the target,with the largest SNR at the maximum antenna gain value,and that under the influence of clutter,the decrease of antenna pitch angle results in the SCR decrease.This provides a basis for adjusting antenna pitch angle of two-di-mensional radar according to the need of wartime mission.

关 键 词：天线俯仰 小目标 信噪比 信杂比 

分 类 号：TN957.51[电子电信—信号与信息处理]