极地研究

极地研究 ›› 2026, Vol. 38 ›› Issue (3): 501-506.DOI: 10.13679/j.jdyj.20250008

• 研究快报 • 上一篇    

星载极地冰雪探测稀疏重航过雷达系统分析

李道京1  崔岸婧1,2  吴疆1,2  高敬涵1,2  王宇1   

  1. 1中国科学院空天信息创新研究院微波成像全国重点实验室, 北京 100190;
    2中国科学院大学电子电气与通信工程学院, 北京 100049
  • 收稿日期:2025-02-19 修回日期:2025-05-21 出版日期:2026-09-30 发布日期:2026-10-22
  • 通讯作者: 李道京
  • 基金资助:
    国家自然科学基金(62471458)资助

Analysis of a spaceborne sparse repeat-pass radar system for polar snow/ice detection

LI Daojing1, CUI Anjing1,2, WU Jiang1,2, GAO Jinghan1,2, WANG Yu1   

  1. 1National Key Laboratory of Microwave Imaging, Aerospace Information Research Institute, Chinese Academy of Sciences,
    Beijing 100190, China;
    2School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2025-02-19 Revised:2025-05-21 Online:2026-09-30 Published:2026-10-22

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摘要：

 针对南极和北极冰雪探测需求, 本文提出了一种星载极地冰雪探测稀疏重航过雷达系统, 并对其系统性能和可行性进行了分析。在冰厚衰减75 dB条件下设计了星载雷达系统参数, 给出了初步系统方案。根据雷达卫星在极地轨道密集和重访周期短的特点, 提出了利用星载合成孔径雷达稀疏重航过三维成像技术提高交轨分辨率的方法, 给出了单颗卫星结合轨道摄动实现极地冰雪探测的初步分析结果。该系统不仅分辨率高、性能良好, 还具有一定的技术可行性。

关键词: 星载雷达, 冰雪探测, 稀疏重航过, 三维成像, 极地遥感

Abstract:

For snow/ice detection in the Antarctic and the Arctic, this study developed a spaceborne sparse repeat-pass radar system, and analyzed its performance and feasibility. The parameters of the spaceborne radar system were designed under the condition of 75-dB decay attributable to ice thickness, and details of preliminary system are described. Considering the characteristics of the density of radar satellites in polar orbit and their short revisit time, a method for using spaceborne synthetic aperture radar sparse repeat-pass 3D imaging technology was developed to improve resolution in the cross-track direction, and preliminary results obtained by the polar snow/ice detection system based on a single satellite combined with orbital perturbation were analyzed. The system was found not only to have high resolution and good performance, but also to have certain technical feasibility. 


Key words: spaceborne radar, snow/ice detection, sparse repeat-pass flight, 3D imaging, polar remote sensing