太赫兹科学与电子信息学报2026，Vol.24Issue(2)：213-226,235,15.DOI:10.11805/TKYDA2025323
太赫兹雷达空间目标异动行为认知研究
Anomalous motion detection and analysis of space targets based on THz radar
摘要
Abstract
Behavior analysis and cognition of space targets are crucial for the in-orbit safety maintenance and status monitoring of space assets.Terahertz(THz)radar,with its short wavelength,large bandwidth,and significant Doppler effect,offers unique advantages in the inversion and identification of anomalies in space targets.Previous studies primarily focuses on known full-process anomalies,while studies on unknown behaviors,particularly those involving the moment of anomaly occurrence,remain limited.This paper first establishes an anomaly model for typical space objects and simulates their echoes.Subsequently,a multidimensional feature analysis framework integrating time-domain signals,one-dimensional range images,micro-Doppler data,and two-dimensional imaging is constructed.The effectiveness of this method is validated using actual measurement data.Results indicate that phase discontinuities indicate the onset of anomaly events;shifts and distortions in the one-dimensional range image correlate with orbital anomalies;micro-Doppler features and local distortions in the two-dimensional image are closely associated with attitude and shape anomalies.Signal characteristics derived from terahertz radar enable precise localization of anomaly onset and classification of anomaly types,providing a systematic technical approach for real-time recognition of space object anomaly behavior.关键词
太赫兹雷达/空间目标/异动/特征提取/微多普勒Key words
THz radar/space targets/anomalous motion/feature extraction/micro-Doppler分类
信息技术与安全科学引用本文复制引用
胡爽爽,杨琪,郭文静,王宏强..太赫兹雷达空间目标异动行为认知研究[J].太赫兹科学与电子信息学报,2026,24(2):213-226,235,15.基金项目
湖南省科技创新计划项目(2024RC3143) （2024RC3143）
国家自然科学基金资助项目(62201591 （）
62035014) （）
