岸基对海雷达STC曲线设计与性能对比  

Comparison of STC curve design and performance of shore-based sea-to-sea radar

作　　者：田凯祥 刘宁波 王中训[1] 刘言 Tian Kaixiang;Liu Ningbo;Wang Zhongxun;Liu Yan(School of Physics and Electronic Information,Yantai University,Yantai 264005,China;Naval Air University,Yantai 264005,China)

机构地区：[1]烟台大学物理与电子信息学院,山东烟台264005 [2]海军航空大学,山东烟台264005

出　　处：《电子技术应用》2022年第8期1-5,12,共6页Application of Electronic Technique

基　　金：国家自然科学基金(61871392,62101583)。

摘　　要：雷达对海探测过程中,近程海杂波回波功率大,严重影响雷达接收机工作和后续信号处理,为了平衡雷达接收机的增益和灵敏度,需要合理设计灵敏度时间控制(STC)曲线。介绍了利用GARCH模型、多项式函数、雷达距离方程和指数函数的四种STC设计曲线方法,采用高、低两种海况下实测数据对四种STC曲线的近程海杂波抑制性能进行了对比分析。实验结果表明,在高、低两种海况下,雷达距离方程形式的STC曲线抑制海杂波性能显著;GARCH模型建模的STC曲线适用于低海况下;多项式形式和指数形式的STC曲线在不同海况下效果接近。In the process of radar to sea detection,the near-range sea clutter echo power is high,which seriously affects the radar receiver work and subsequent signal processing.In order to balance the gain and sensitivity of radar receiver,a reasonable design of sensitivity time control(STC)curve is needed.This paper introduces four STC design curve methods using GARCH model,polynomial function,radar distance equation and exponential function,and compares and analyzes the near-range sea clutter suppression performance of the four STC curves by using the measured data under high and low sea conditions.The experimental results show that the STC curves in the form of radar distance equation have significant performance in suppressing sea clutter in both high and low sea states;the STC curves modeled by GARCH model are suitable for low sea states;the STC curves in the form of polynomial and exponential are close to each other in different sea states.

关 键 词：雷达 海杂波 灵敏度时间控制 

分 类 号：TN951[电子电信—信号与信息处理] TN957.51[电子电信—信息与通信工程]