Enhancement of SAR Ocean Image Based on Goldstein Filter
Zhang Wen-yi①②③ Hu Dong-hui①② Ding Chi-biao①②
①(Key Laboratory of Technology in Geo-spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China) ②(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ③(Graduate University of Chinese Academy of Sciences, Beijing 100039, China)
Abstract：Enhanced SAR ocean images with wind wave signatures and reserved other oceanographic features can promote oceanographic applications. Based on the Goldstein interferogram filter, the enhanced parameter is adaptively determined by the wind wave spectrum power to noise ratio. Meanwhile, the divided wavenumber is determined by SAR imaging parameters and in-suit ocean wind to reserve the low frequency spectrum components. Therefore, the wind wave features are dramatically enhanced and the abundant oceanographic signatures are reserved. Algorithm analysis and experiments show the reasonable efficiency and capabilities.
2012, Vol. 34 
