Title :
SAR Azimuth ambiguities removal for ship detection using time-frequency techniques
Author :
Canbin Hu ; Boli Xiong ; Jun Lu ; Zhiyong Li ; Lingjun Zhao ; Gangyao Kuang
Author_Institution :
Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, a new azimuth ambiguities removal method is introduced for ship detection by Time-Frequency (TF) analysis. A TF coherence indicator is proposed to filter ghost echoes due to the different TF coherence characteristics between real ship target echoes and ambiguous ones. The effectiveness of this proposed TF coherence indicator for ship detection is demonstrated using single polarimetric spaceborne TerraSAR-X coherent data over the test sea/ocean site in Hongkong, China.
Keywords :
echo; geophysical image processing; object detection; radar imaging; radar polarimetry; remote sensing by radar; ships; synthetic aperture radar; China; Hongkong; SAR azimuth ambiguities removal; TF coherence characteristics; TF coherence indicator; ship detection; ship target echoes; single polarimetric spaceborne TerraSAR-X coherent data; test ocean site; test sea site; time-frequency analysis; time-frequency techniques; Azimuth; Coherence; Marine vehicles; Oceans; Remote sensing; Synthetic aperture radar; Time-frequency analysis; SAR azimuth ambiguity; Ship detection; Single-Pol SAR data; Time-Frequency analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International
Conference_Location :
Quebec City, QC
DOI :
10.1109/IGARSS.2014.6946591
