太赫兹科学与电子信息学报2025，Vol.23Issue(8)：763-771,9.DOI:10.11805/TKYDA2025022
基于目标散射特征估计的BiSAR参数化成像方法
BiSAR parametric imaging method based on target scattering feature parameter estimation
张玉华 1宋月 1李中余 1武俊杰 1杨建宇1
作者信息
- 1. 电子科技大学 信息与通信工程学院,四川 成都 611731
- 折叠
摘要
Abstract
Existing bistatic Synthetic Aperture Radar(BiSAR)imaging methods simplify all targets in the scene as the superposition of point targets,ignoring the complex scattering processes of the targets.This leads to model mismatch in the imaging echoes and the loss of structural information of the targets in the imaging results.To address this issue,a BiSAR target parametric imaging method based on target scattering feature parameter estimation is proposed.Firstly,a BiSAR parametric echo model is established based on the ideal point scattering model and three typical target scattering models.Secondly,the position parameters are estimated using the coarse imaging results,and a local dictionary matrix is constructed based on the parametric echo model to achieve dictionary dimensionality reduction.Then,the Alternating Direction Method of Multipliers(ADMM)is utilized to estimate the target scattering feature parameters.Finally,the image is parametrically reconstructed based on the estimated target parameters.Experiments with simulated data validate the accuracy and effectiveness of the proposed method,which can enhance the structural information of the targets in the imaging results.关键词
双基合成孔径雷达(BiSAR)/典型散射特征模型/参数化成像/交替方向乘子法(ADMM)Key words
Bistatic Synthetic Aperture Radar(BiSAR)/Canonical Scattering Feature(CSF)model/parametric imaging/Alternating Direction Method of Multipliers(ADMM)分类
信息技术与安全科学引用本文复制引用
张玉华,宋月,李中余,武俊杰,杨建宇..基于目标散射特征估计的BiSAR参数化成像方法[J].太赫兹科学与电子信息学报,2025,23(8):763-771,9.
