中国科学院大学学报2025，Vol.42Issue(6)：792-805,14.DOI:10.7523/j.ucas.2024.011
基于运动参数估计的雷达高速目标检测方法
Radar high-speed target detection method based on motion parameter estimation
摘要
Abstract
Coherent accumulation over a long period of time has been an effective means to enhance radar echo energy.However,for high-speed moving targets,within a long coherent processing interval,across range unit(ARU)and Doppler frequency migration(DFM)caused by their velocity and acceleration in the radar radial direction cannot be ignored.Additionally,the velocity ambiguity problem caused by high speed also needs to be addressed.This paper proposes a high-speed target detection method based on motion parameter estimation.By segmenting coherent accumulation,the ARU under each segment is suppressed.The peak position of the echo after accumulation under each segment is used as a sample point for parameter estimation input.A filter is constructed using the target radial acceleration obtained through searching to compensate for nonlinear components in the echo phase.Finally,keystone transform is used in conjunction with velocity ambiguity term compensation to correct ARU in radar echoes,and coherent accumulation of the high-speed target echo signal is achieved by performing FFT along the azimuth.关键词
跨距离单元/多普勒频率扩散/长时间相干积累/高速目标检测/速度模糊Key words
across range unit/Doppler frequency migration/long-time coherent accumulation/high-speed target detection/velocity ambiguity分类
信息技术与安全科学引用本文复制引用
郭真方,孙吉利,王帅..基于运动参数估计的雷达高速目标检测方法[J].中国科学院大学学报,2025,42(6):792-805,14.基金项目
国家重点研发计划项目(2022YFC2807000/2022YFC2807001)资助 （2022YFC2807000/2022YFC2807001）
