一种改进现有机载雷达探测性能的多普勒处理新技术  

A New Doppler Processing Technology to Improve the Detection Performance of Existing Airborne Radar

作　　者：杜改丽 封治华[2] DU Gaili;FENG Zhihua(School of Public Infrastructure,Henan Medical College,Zhengzhou 451191,China;The 27th Research Institute of China Electronics Technology Group Corporation,Zhengzhou 450047,China)

机构地区：[1]河南医学高等专科学校公共基础部,郑州451191 [2]中国电子科技集团公司第二十七研究所,郑州450047

出　　处：《现代雷达》2022年第2期75-83,共9页Modern Radar

基　　金：国防科技创新特区H863计划重点项目(20-163-04-ZD-006-001-01)。

摘　　要：文中提出了一种自适应多普勒补偿算法,用来缓解近距离单元中退化的空时自适应处理(STAP)性能,从而提高机载雷达探测性能。自适应特性可以避免飞机对雷达参数的实时性的需要。同时,提出了一种有效的STAP算法用来检测和估计目标参数,输入STAP权值数据以获得三维数组,并且利用三维数组的距离投影来检测和估计目标的距离,利用角度-多普勒投影来估计目标的空间和时间参数。在本研究中,基于一个机载相控阵雷达模型的合成数据生成估计协方差矩阵。所提出的STAP算法非常接近机载雷达平台的实时实现方案。通过对合成数据的目标参数估计和STAP度量,验证了自适应多普勒补偿算法的有效性。In this paper,an adaptive Doppler compensation algorithm is proposed to alleviate the degraded space-time adaptive processing(STAP)performance in the short-range unit,so as to improve the detection performance of airborne radar.The adaptive characteristic can avoid the need of real-time radar parameters.At the same time,an effective STAP algorithm is proposed to detect and estimate the target parameters,input the STAP weight data to obtain the three-dimensional array,use the range projection of the three-dimensional array to detect and estimate the distance of the target,and use the angle Doppler projection to estimate the spatial and temporal parameters of the target.In this study,the estimated covariance matrix based on the synthetic data of an airborne phased array radar model is generated.The proposed STAP algorithm is very close to the real-time implementation scheme of airborne radar platform.Through the target parameter estimation and STAP measurement of synthetic data,the effectiveness of adaptive Doppler compensation algorithm is verified.

关 键 词：自适应 多普勒 补偿算法 机载雷达 空时自适应处理算法 

分 类 号：TN959.73[电子电信—信号与信息处理]