Acta Geodaetica et Cartographica Sinica ›› 2023, Vol. 52 ›› Issue (10): 1679-1692.doi: 10.11947/j.AGCS.2023.20220257

• Photogrammetry and Remote Sensing • Previous Articles     Next Articles

Motion state monitoring and estimation of ship target based on optical satellite video

WANG Taoyang1, HONG Jianzhi1, ZHANG Guo2, JIANG Yonghua1, LI Xin2, DONG Tiancheng2, HAN Yuqi3, WANG Jingyin4, YANG Yapeng5, XU Congan6,7   

  1. 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;
    2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    3. Department of Computer Science, Tsinghua University, Beijing 100084, China;
    4. Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China;
    5. Troops 91977, Beijing 100036, China;
    6. Institute of Information Fusion, Naval Aviation University, Yantai 264000, China;
    7. Institute of Advanced Technology, Beijing Institute of Technology, Jinan 250300, China
  • Received:2022-04-18 Revised:2022-10-20 Published:2023-10-31
  • Supported by:
    Civil Aerospace Technology Advance Research Project (No. D040107);Foundation Strengthening Fund Project (No. 2021-JCJQ-JJ-0251);Fundamental Research Funds for the Central Universities, China (No. 2042022dx0001)

Abstract: Optical satellite video can continuously monitor moving targets, which has become a current research hotspot. However, most of the current researches only focus on image-side object detection, tracking and trajectory extraction, and do not make full use of the imaging geometric parameters for high-precision quantitative estimation of the target motion state. To solve this problem, this paper proposes a method for quantitative estimation of ship target motion state based on optical satellite video. Firstly, the first frame of satellite video is accurately orientated. Then, the video is stabilized through inter-frame registration. Aiming at the problem of low positioning accuracy of the rectangular anchor tracking method, a robust tracking method for surface ships considering rotation and scale estimation is proposed for target tracking of satellite video. Finally, the geometric model is used to estimate the ground motion trajectory, speed and direction of the target through object mapping. The effectiveness of the method in this paper is verified by carrying out simultaneous observation experiments between satellites and ships on the sea based on Jilin-1 optical video satellite. Under the condition of sparse control points, the experimental results show that the geometric positioning accuracy of the ship target is 1.60 meters, the speed accuracy is 0.18 m/s, and the direction accuracy is 4.05°, which is significantly improved compared with similar methods.

Key words: optical satellite video, ground target positioning, motion state estimation, ship target, precision

CLC Number: