基于随机微分方程的高耦合系数条件下距离估计方法  

A range estimation method in the case of high coupling coefficient based on stochastic differential equation

作　　者：李正[1,2] 靳俊峰 陈飞[3] LI Zheng;JIN Junfeng;CHEN Fei(No.38 Research Institute,China Electronics Technology Group Corporation,Hefei 230088,China;Key Laboratory Aperture Array and Space Application,Hefei 230088,China;No.63768 Unit,the PLA,Xi’an 710600,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230088 [2]孔径阵列与空间探测安徽省重点实验室,合肥230088 [3]63768部队,西安710600

出　　处：《空天预警研究学报》2023年第2期100-104,共5页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

摘　　要：针对线性调频体制雷达在高耦合系数条件下距离-多普勒耦合效应严重影响雷达测距精度问题,提出了一种目标距离估计方法.基于随机微分方程理论,构造随机过程来估计目标距离值,从理论上推导出该方法估计误差与数据率、耦合系数、雷达测距随机差参数具体数量关系,并证明了该方法在适当条件下能显著改善雷达测距精度.仿真结果验证了所研究方法的可行性.Range-Doppler coupling effect seriously affects the range accuracy of LFM radar in the case of high coupling coefficient.In order to solve the problem above,this paper presents a target range estimation method.Based on stochastic differential equation theory,the paper constructs a stochastic process to estimate target range,then theoretically deduces the concrete quantitative relationship between the estimation error of this method and the data rate,the coupling coefficient and the random difference parameters of radar ranging,and finally proves that the method can significantly improve the accuracy of radar ranging under appropriate conditions.The simulation result verifies the feasibility of the proposed method.

关 键 词：线性调频信号 距离-多普勒耦合效应 随机微分方程 

分 类 号：TN957[电子电信—信号与信息处理]