Journal of Systems Engineering and Electronics ›› 2023, Vol. 34 ›› Issue (1): 47-55.doi: 10.23919/JSEE.2023.000003

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Coherent range-dependent map-drift algorithm for improving SAR motion compensation

Man ZHANG1(), Guanyong WANG2,*(), Feiming WEI3,4(), Xue JIN5()   

  1. 1 School of Electronic and Communication Engineering, Guangzhou University, Guangzhou 510006, China
    2 Beijing Institute of Radio Measurement, Beijing 100854, China
    3 School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
    4 No.802 Research Institute of Shanghai Academy of Spaceflight Technology, Shanghai 200050, China
    5 Beijing Institute of Tracking and Communication Technology, Beijing 100094, China
  • Received:2022-04-06 Accepted:2022-12-29 Online:2023-02-18 Published:2023-03-03
  • Contact: Guanyong WANG;;;
  • About author:
    ZHANG Man was born in 1984. She received her Ph.D. degree from Xidian Univeristy. She is a lecturer in Guangzhou University. Her research interests are radar signal processing and machine learning in radar imaging. E-mail:

    WANG Guanyong was born in 1989. He received his B.S. degree from Tianjin University in 2011, and M.S. and Ph.D. degrees from the Defence Technology Academy of China Aerospace Science and Industry Corporation in 2014 and 2018. He is a senior engineer in Beijing Institute of Radio Measurement. His research interests are high band synthetic aperture radar (SAR) imaging and high precision motion compensation technology, such as millimeter wave SAR signal processing. E-mail:

    WEI Feiming was born in 1983. He received his M.S. degree from University of Electronic Science and Technology of China. He is a professor in No.802 Research Institute of Shanghai Academy of Spaceflight Technology, and a doctor of engineering in Shanghai Jiao Tong University. His research interests are radar target detection and recognition. E-mail:

    JIN Xue was born in 1988. She received her M.S. degree from Beijing Institute of Technology in 2013. She is a research associate in Beijing Institute of Tracking and Communication Technology. Her research interest is image processing. E-mail:
  • Supported by:
    This work was supported by the Key R&D Program Projects in Hainan Province (ZDY 2019008) and the State Key Laboratory of Rail Transit Engineering Information (SKLK22-08)


Synthetic aperture radar (SAR) is usually sensitive to trajectory deviations that cause serious motion error in the recorded data. In this paper, a coherent range-dependent map-drift (CRDMD) algorithm is developed to accommodate the range-variant motion errors. By utilizing the algorithm as an estimate core, robust motion compensation strategy is proposed for unmanned aerial vehicle (UAV) SAR imagery. CRDMD outperforms the conventional map-drift algorithms in both accuracy and efficiency. Real data experiments show that the proposed approach is appropriate for precise motion compensation for UAV SAR.

Key words: synthetic aperture radar (SAR), motion compensation (MOCO), coherent map-drift (CMD), range-variant