航空科学技术2025，Vol.36Issue(7)：57-66,10.DOI:10.19452/j.issn1007-5453.2025.07.008
基于逆合成孔径雷达的旋翼目标微动参数分层式估计方法研究
Multi-stage Parameter Estimation Method for the Micro-Doppler of Rotor Targets Using ISAR
摘要
Abstract
In the research on inverse synthetic aperture radar(ISAR)imaging of the target with propeller,it is of great significance to analyze the micro-Doppler characteristics so as to extract the physical parameters of the propeller.In this paper,a hierarchical estimation method of the micro-Doppler parameters is proposed,which simplifies the traditional three-dimensional parameter search into three one-dimensional optimization problems,and realizes the decoupling of the rotation speed,blade initial phase angle and blade length.Compared with the existing methods,the proposed method has the advantages of low computational complexity and short running time,and can achieve accurate estimation of rotor parameters under azimuth undersampling conditions.The experiments using simulated and measured data show that the proposed method has high precision of rotor parameter estimation,and the running time is only about 10%of the traditional traversal algorithm.This paper provides an efficient solution for the micro-motion characteristic analysis on propeller targets,which effectively reduces the hardware requirements of data acquisition and processing.关键词
逆合成孔径雷达/旋翼目标/微多普勒特征/参数估计/参数解耦Key words
ISAR/rotor targets/micro-Doppler features/parameter estimation/parameter decoupling分类
天文与地球科学引用本文复制引用
许志勇,田巳睿,许克勤,陈琛..基于逆合成孔径雷达的旋翼目标微动参数分层式估计方法研究[J].航空科学技术,2025,36(7):57-66,10.基金项目
航空科学基金(20220013059001)Aeronautical Science Foundation of China(20220013059001) （20220013059001）
