去除SAR图像中LFM干扰的调频速率最小二乘估计

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Signal Processing Letters Pub Date : 2025-08-19 DOI:10.1109/LSP.2025.3600375

Peijun Jin;Huizhang Yang;Meng Sun;Xuanchen Guo;Shuolin Pan

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引用次数: 0

摘要

地面和星载雷达会对星载合成孔径雷达（SAR）图像造成严重的线性调频干扰。为了解决这一问题，开发一种有效的SAR图像LFM干扰抑制算法至关重要。为此，本文首先提出了一种基于最小二乘估计的快速估计器，用于提取LFM干扰的调频速率。然后，我们开发了一种基于频谱聚焦的算法，用于利用估计的调频速率去除LFM干扰。实测数据和仿真实验表明，该算法能够准确估计调频率，有效去除干涉宽幅单视复杂图像中的LFM干扰特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Least-Square Estimation of FM Rates for Removing LFM Interference in SAR Images

Ground and spaceborne radars can cause severe linear-frequency modulation (LFM) interference in space borne synthetic aperture radar (SAR) imagery. To address this problem, it is important to develop an efficient algorithm for LFM interference suppression in SAR images. For this purpose, in this paper we first propose a fast estimator for retrieving the frequency-modulation (FM) rates of the LFM interference based on least-square estimation. Then, we develop a spectral focusing-based algorithm for removing LFM interference using the estimated FM rates. Real-data and simulation experiments show that the proposed algorithm can accurately estimate the FM rates and effectively remove LFM interference signatures in interferometric wide-swath single-look-complex images.

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来源期刊

IEEE Signal Processing Letters 工程技术-工程：电子与电气

CiteScore

7.40

自引率

12.80%

发文量

339

审稿时长

2.8 months

期刊介绍： The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing. Papers published in the Letters can be presented within one year of their appearance in signal processing conferences such as ICASSP, GlobalSIP and ICIP, and also in several workshop organized by the Signal Processing Society.