信息工程大学学报2024，Vol.25Issue(1)：1-8,29,9.DOI:10.3969/j.issn.1671-0673.2024.01.001
无源雷达高速目标回波相参积累和参数估计算法
Coherent Integration and Parameter Estimation of High-Speed Target in Passive Radar
摘要
Abstract
To solve the problem of range migration effect caused by long time accumulation in param-eter estimation of constant velocity targets with high maneuvering in passive radar,an efficient phase-coherent accumulation and parameter estimation algorithm based on Keystone transform and circular array interferometer direction finding is proposed.First,according to the target motion and the signal parameters of the external radiation source,the reference signal and the monitoring signal are processed in segments,and the interval is fast time and the interval is slow time.Then,the Key-stone transform is used to scale the time axis of each frequency to correct the distance migration of high-speed targets,and the target echo signal energy is accumulated to the same delay-Doppler unit.Finally,a circular array interferometer is used to estimate the azimuth Angle and pitch Angle of the target.The simulation results show that the proposed algorithm can effectively achieve the phase-co-herent accumulation and parameter estimation of the weak echo signal of the target with high maneu-vering uniform velocity,and the computational complexity is lower,and the estimation of the target delay,Doppler parameter,azimuth angle and pitch angle parameters is more robust and accurate.关键词
无源雷达/高速目标/距离徙动/相参积累/参数估计/波达方向/均匀圆阵Key words
passive radar/high-speed target/range migration/coherent integration/parameter esti-mation/angle of arrival/uniform circular array分类
信息技术与安全科学引用本文复制引用
杨静,刘成城,黄洁,张媛媛..无源雷达高速目标回波相参积累和参数估计算法[J].信息工程大学学报,2024,25(1):1-8,29,9.基金项目
国家自然科学基金资助项目(62071490) （62071490）
