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联合相位校正技术在双基雷达月球成像的应用

YU Kaibin LI Minghui ZHAO Rongkun YIN Yan NIU Xianghua SUN Jinghai HUANG Lijia

天文学进展2025，Vol.43Issue(4)：628-638,11.

天文学进展2025，Vol.43Issue(4)：628-638,11.DOI:10.3969/j.issn.1000-8349.2025.04.07

联合相位校正技术在双基雷达月球成像的应用

Application of Combined Phase Correction Technique in Lunar Imaging Based on Bi-SAR

YU Kaibin ¹LI Minghui ¹ZHAO Rongkun ¹YIN Yan ²NIU Xianghua ³SUN Jinghai ³HUANG Lijia²

作者信息

1. State Key Laboratory of Public Big Data,Guizhou University,Guiyang 550025,china
2. Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China||Key Laboratory of Target Cognition and Application Technology,Beijing 100190,China||School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
3. The National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China||Guizhou Radio Astronomy Observatory,Guiyang 550025,China
折叠

摘要

Abstract

With the development of planetary imaging research using radar astronomy technology,researchers have conducted related research on lunar radar imaging utilizing.This article is based on a dual ground-based radar system consisting of Sanya Incoherent Scatter Radar(SYISR)and FAST,using envelope alignment and phase correction methods to rectify the errors in radar echoes caused by relative motion between the moon and the ground.Due to the high sensitivity of the FAST and a high signal-to-noise ratio of radar echoes,envelope alignment can basically meet the requirements using only curve fitting techniques.In terms of phase correction,in order to improve accuracy and reduce time consumption,this paper proposes a method that combines phase gradient autofocus algorithm with minimum entropy autofocus algorithm.Through experiments,it has been proven that the contrast of lunar images corrected by this method is improved,and the entropy values of the images are reduced.

关键词

月球雷达成像/双基雷达/相位梯度自聚焦/最小熵自聚焦

Key words

Lunar radar imaging/dual base radar/phase gradient autofocus(PGA)/minimum entropy autofocus(MEA)

分类

天文与地球科学

引用本文复制引用

YU Kaibin,LI Minghui,ZHAO Rongkun,YIN Yan,NIU Xianghua,SUN Jinghai,HUANG Lijia..联合相位校正技术在双基雷达月球成像的应用[J].天文学进展,2025,43(4):628-638,11.

基金项目

国家自然科学基金(12363010) （12363010）

贵州省科技计划项目(黔科合支撑[2023]一般352,黔科合基础-ZK[2023]一般039,黔科合服企[2023]003) （黔科合支撑[2023]一般352,黔科合基础-ZK[2023]一般039,黔科合服企[2023]003）

天文学进展

OA北大核心

ISSN：1000-8349

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