深空探测学报（中英文）2025，Vol.12Issue(6)：579-589,11.DOI:10.3724/j.issn.2096-9287.2025.20250021
双基地雷达月表极地水冰沉积物探测
Bistatic Radar Detection of Water Ice Deposits in Lunar Polar Regions
摘要
Abstract
Deep space bistatic radar facing some challenges in planetary exploration,including rapidly varying observation geometry,extremely low signal-to-noise ratios,and difficulty in calibrating channel gain and phase due to the absence of onboard calibration sources.To address these issues,a bistatic radar terrain inversion system tailored for deep space applications was developed.Using the SPICE(Spacecraft Planet Instrument C-matrix Events)toolkit and focusing on echo data acquired under near-backscatter conditions.The system integratd geometry modeling,data calibration,and multiparameter inversion of surface characteristics.The analysis demonstrates that the proposed system successfully extracted electromagnetic indicators associated with potential water-ice deposits in the lunar south polar region,including enhanced echo power,locally elevated circular polarization ratios(CPR),reduced dielectric constants,and disturbed cross-spectrum phase behavior.These combined features support the possible presence of polar water-ice deposits.The results verify the effectiveness of deep space bistatic radar for surface and material inversion and provide a scalable technical pathway for future bistatic radar applications in deep space missions.关键词
地形反演/水冰沉积物检测/双基地雷达/SPICEKey words
terrain inversion/detection of water ice deposits/bistatic radar/SPICE分类
天文与地球科学引用本文复制引用
冯飞飞,简念川,汤海波,孟桥,陈从颜..双基地雷达月表极地水冰沉积物探测[J].深空探测学报（中英文）,2025,12(6):579-589,11.基金项目
国家重点研发课题(2021YFC2203502) （2021YFC2203502）
