Volume 12 Issue 6
Dec.  2023
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Article Navigation >  Journal of Radars  > 2023  >  12(6): 1179-1201
AN Daoxiang, GE Beibei, WANG Wu, et al. Research on the technology of airborne multi-channel wide angle staring SAR ground moving target indication[J]. Journal of Radars, 2023, 12(6): 1179–1201. doi: 10.12000/JR23147
Citation: AN Daoxiang, GE Beibei, WANG Wu, et al. Research on the technology of airborne multi-channel wide angle staring SAR ground moving target indication[J]. Journal of Radars, 2023, 12(6): 1179–1201. doi: 10.12000/JR23147
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Research on the Technology of Airborne Multi-channel Wide Angle Staring SAR Ground Moving Target Indication

DOI: 10.12000/JR23147
  • 1.

    School of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China

  • 2.

    Science and Technology on Complex Aviation System Simulation Laboratory, Beijing 100076, China

  • 3.

    High Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China

Funds:  The Natural Science Fund for Distinguished Young Scholars of Hunan Province (2022JJ10062), The National Natural Science Foundation of China (62271492, 62101562, 62101566)
More Information
  • Corresponding author: AN Daoxiang, daoxiangan@nudt.edu.cn
  • Received Date: 2023-08-29
  • Rev Recd Date: 2023-11-23
    • Available Online: 2023-11-29
  • Publish Date: 2023-12-21
    Abstract
  • Airborne Wide angle staring Synthetic Aperture Radar (WasSAR) is a novel SAR imaging technique that enables multiangle and long-time staring imaging of an observation region. The combination of WasSAR and Ground Moving Target Indication (GMTI) facilitates the long-time tracking of moving targets in key areas, thereby obtaining dynamic sensing information. Herein, we initially constructed a moving target echo model for airborne multi-channel WasSAR, followed by an analysis of the characteristics of a moving target during WasSAR imaging. Further, group phase shift calibration and modified A2DC methods are proposed to mitigate the influence of platform attitude errors and channel imbalances. In accordance with this, an extended airborne multi-channel WasSAR ground moving target detection and tracking method is proposed, which achieves accurate detection and tracking of targets moving on complex roads. Finally, a trajectory reconstruction method for moving targets in airborne multi-channel WasSAR-GMTI is presented, demonstrating accurate trajectory reconstruction for targets on complex roads. Moreover, a flight experiment using our independently developed airborne multi-channel WasSAR-GMTI system, along with the associated real data processing results, is presented. These results confirm the validity and practicability of airborne WasSAR-GMTI for moving target dynamic surveillance and serve as a foundation for future research.

     

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