一种提高MTI/MTD雷达检测概率的方法  

A Method of Improving Detection Probability of MTI/MTD Radar

作　　者：任腊梅[1] 刘逸群 成沙辉 Ren Lamei;Liu Yiqun;Cheng Shahui(Shaanxi Huanghe Group Co.Ltd.,Xi an 710043)

机构地区：[1]陕西黄河集团有限公司,西安710043

出　　处：《火控雷达技术》2018年第3期18-21,35,共5页Fire Control Radar Technology

摘　　要：MTI级联MTD是现代雷达普遍使用的抗杂波处理手段。由于MTI滤波器的幅频响应特性使得处理后的噪声背景不平稳,不利于雷达慢门限恒虚警检测,降低了目标检测概率。利用幅频响应特性曲线可以对噪声不平稳进行补偿,但是在窄阻带内结果不平稳。本文根据通道噪声值对不同多普勒通道信号进行补偿,可使所有通道背景噪声一致,可保证慢门限检测的恒虚警率,且可在不影响杂波抑制性能的条件下提高过渡带通道运动目标的检测性能。MTI cascade-connected with MTD is the commonly used means to suppress clutter in modern radar. The processed noise background is unstable due to amplitude-frequency response characteristic of MTI filter. This is bad for radar slow threshold constant alarm detection, and makes target detection probability to be decreased. Although amplitude-frequency response characteristic curve can be used to compensate unstable noise, the noise within narrow stop-band is still unstable. The signal in different Doppler channel is compensated on basis of channel noise value, this will make background noise in all channels identical so as to ensure constant false alarm rate of slow threshold detection, and improve detection performance for moving target in transitional zone channel in condition of not effecting clutter suppression performance.

关 键 词：MTI/MTD雷达 恒虚警处理 背景噪声 通道增益校正 

分 类 号：TN957[电子电信—信号与信息处理]