距离-多普勒高耦合系数条件下测距修正方法  

A range-measure correction method under high range-Doppler coupling coefficient

作　　者：张转花 李正[1,2] 靳俊峰 ZHANG Zhuanhua;LI Zheng;JIN Junfeng(No.38 Research Institute,China Electronics Technology Group Corporation,Hefei 230088,China;Key Laboratory of Aperture Array and Space Application,Hefei 230088,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

出　　处：《空天预警研究学报》2025年第2期86-89,98,共5页JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH

摘　　要：针对线性调频体制雷达在距离-多普勒耦合系数较高且变化情形下存在的测距偏差修正问题,基于随机微分方程理论构造的随机过程测距原理,提出了一种距离修正方法.通过选取最大的耦合系数,利用径向速度的预测值对测量距离进行修正,并给出修正的斜距估计模型.仿真结果表明,与现有方法相比,本文所提出的修正方法在波形切换时的距离估计性能更优.In order to address the problem of range-measure error in linear frequency modulated(LFM)radar systems under the condition of high and variable range-Doppler coupling coefficients,this paper is based on the stochastic process ranging principle constructed by stochastic differential equation theory to propose a range-measure correction method,then uses the predicted value of radial velocity to modify the measured range by selecting the maximum coupling coefficient,and finally presents the revised oblique distance estimation model.Simulation results show that compared with the existing methods,the proposed correction method has better performance in range estimation during waveform switching.

关 键 词：距离-多普勒耦合 波形切换 随机过程 状态估计 

分 类 号：TN957.51[电子电信—信号与信息处理]