Journal of Geodesy and Geoinformation Science ›› 2021, Vol. 4 ›› Issue (1): 63-69.doi: 10.11947/j.JGGS.2021.0108

• Special Issue • Previous Articles     Next Articles

Marine Target Detection Using Dual-polarimetric SAR Imagery

Tao ZHANG1(),Armando MARINO2,Ferdinando NUNZIATA3,Domenico VELOTTO4,Weizeng SHAO5,Xiaofeng LI6,Maurizio MIGLIACCIO3,Huilin XIONG7   

  1. 1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
    2. The University of Stirling, Natural Sciences, Stirling FK9 4LA, U.K.
    3. Università degli Studi di Napoli Parthenope, Napoli 38-80133, Italy
    4. German Aerospace Center, Bremen 28199, Germany
    5. Colleage of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
    6. Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road, Qingdao 266071, China
    7. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2020-10-10 Accepted:2020-12-25 Online:2021-03-20 Published:2021-04-06
  • About author:Tao ZHANG (1989-), male, postdoctor, majors in PolSAR image processing and machine learning. E-mail: zhangtao8902@mail.tsinghua.edu.cn

Abstract:

In this study, we provide a summary of research advances in the field of maritime target detection using DP (dual-polarimetric) SAR (Synthetic Aperture Radar) imagery, accomplished during the European and China collaboration in the framework of the Dragon-4 program ID 32235. The main innovative contribution is twofold: ①We addressed ship detection proposing an improved GP-PNF (Geometrical Perturbation-Polarimetric Notch Filter), termed as IGP-PNF, that is characterized by a new feature vector that includes three new scattering features; ②We addressed oil platform detection by contrasting single-polarization SAR methods with polarimetric ones in order to quantify the extra- benefit carried on polarimetric information. The proposed theoretical framework is tested against actual multi-polarization SAR data. In particular, ship detection methods are verified against a Sentinel-1 SAR scene where a large number of ships is present; while, oil platform detection is discussed using TerraSAR-X SAR data. Experimental analysis shows that: ①The IGP-PNF method performs best in terms of clutter-to-target ratio; ②Coherent polarimetric information significantly outperforms single-polarization SAR measurements in highlighting targets in challenging cases.

Key words: marine target detection; dual-polarimetric SAR; GP-PNF; PCA; Sentinel-1; TS-X