Modified Adaptive 2-D Calibration Algorithm for Airborne Multichannel SAR-GMTI

被引：6
作者：
Ge, Beibei [1 ]
An, Daoxiang [1 ]
Liu, Jinyuan [1 ]
Feng, Dong [1 ]
Chen, Leping [1 ]
Zhou, Zhimin [1 ]
机构：
[1] Natl Univ Def Technol, Coll Elect Sci & Technol, Changsha 410073, Hunan, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2023年 / 20卷
基金：
中国国家自然科学基金;
关键词：
Clutter; Calibration; Synthetic aperture radar; Frequency response; Frequency-domain analysis; Doppler effect; Correlation; Channel calibration; ground moving target indication (GMTI); synthetic aperture radar (SAR);
D O I：
10.1109/LGRS.2023.3267148
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The performance of multichannel synthetic aperture radar (SAR)-based ground moving target indication (GMTI) is inevitably restricted by channel imperfections and imbalances, and channel calibration procedure is incorporated into the scheme accordingly. The adaptive 2-D calibration (A2DC) algorithm is sensitive to outliers and suffers from correction errors. To solve the problem, a modified A2DC (MA2DC) algorithm is proposed in this letter. By improving the Doppler calibration model, the proposed MA2DC is more robust than the A2DC algorithm. It can effectively suppress clutter while maintaining detailed features of moving targets, after which the detection capability of moving targets in SAR-GMTI is improved. Its performance is demonstrated by the Gotcha data, which is publicly released by Air Force Research Laboratory.
引用
收藏
页数：5
相关论文
共 12 条
  • [1] A Backprojection-Based Imaging for Circular Synthetic Aperture Radar
    Chen, Leping
    An, Daoxiang
    Huang, Xiaotao
    [J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2017, 10 (08) : 3547 - 3555
  • [2] Chen Z.-Y., 2017, INT J PERFORMABILITY, V13, P1233
  • [3] Deming R., 2014, PROC SPIE, V9093, P253
  • [4] Ender J. H. G., 1996, EUSAR '96. European Conference on Synthetic Aperture Radar, P49
  • [5] Ground Moving Target Detection and Trajectory Reconstruction Methods for Multichannel Airborne Circular SAR
    Ge, Beibei
    An, Daoxiang
    Chen, Leping
    Wang, Wu
    Feng, Dong
    Zhou, Zhimin
    [J]. IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 2022, 58 (04) : 2900 - 2915
  • [6] A Novel Phase Calibration Method for Dual-Channel CSAR-GMTI Processing
    Ge, Beibei
    Fan, Chongyi
    An, Daoxiang
    Wang, Wu
    Zhou, Zhimin
    Chen, Mingsheng
    [J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2020, 17 (04) : 636 - 640
  • [7] Gierull C.H., 2003, Digital Channel Balancing of Along-Track Interferometric SAR Data
  • [8] Imaging and Relocation for Extended Ground Moving Targets in Multichannel SAR-GMTI Systems
    Huang, Penghui
    Xia, Xiang-Gen
    Wang, Lingyu
    Xu, Huajian
    Liu, Xingzhao
    Liao, Guisheng
    Jiang, Xue
    [J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2022, 60
  • [9] Road-Aided Along-Track Baseline Estimation in a Multichannel SAR-GMTI System
    Huang, Penghui
    Zhang, Xuepan
    Zou, Zihao
    Liu, Xingzhao
    Liao, Guisheng
    Fan, Huaitao
    [J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2021, 18 (08) : 1416 - 1420
  • [10] A Reconfigurable MIMO-SAR Transmission Scheme Based on Inter-Pulse and Intra-Pulse Joint Phase Modulation
    Jin, Guodong
    Wang, Yu
    Zhu, Daiyin
    Niu, Shilin
    Yan, He
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2022, 70 : 4265 - 4276
12