Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Ocean surface wind direction retrieval from multi-polarization airborne SAR based on wavelet

Ai Wei-Hua Kong Yi Zhao Xian-Bin

Ocean surface wind direction retrieval from multi-polarization airborne SAR based on wavelet

Ai Wei-Hua, Kong Yi, Zhao Xian-Bin
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  2195
  • PDF Downloads:  529
  • Cited By: 0
Publishing process
  • Received Date:  26 October 2011
  • Accepted Date:  17 December 2011
  • Published Online:  05 July 2012

Ocean surface wind direction retrieval from multi-polarization airborne SAR based on wavelet

  • 1. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 41005018), the Institute of Meteorology of PLA University of Science and Technology Foundation of China (Grant No. 201001), and the Foundation of CMA Key Laboratory for Atmospheric Physics and Environment, China (Grant No. KDW1105).

Abstract: An ocean surface wind direction retrieval method from multi-polarization airborne synthetic aperture radar images is presented in order to retrieve high precision wind direction SAR image and improve the accuracy of ocean surface wind. The method relies on the ability of two-dimensional (2D) continuous wavelet technique with better time-frequency than Fourier transform and local gradient, which combines 2D continuous wavelet and FFT to exact the ocean surface wind direction from airborne SAR images. The proposed method is executed by using several kinds of mother wavelet functions for the C-band co-polarization and cross-polarization airborne sounding images, and the retrieved ocean surface wind direction is compared with NCEP data and buoy data. The verification results show that the wavelet based ocean surface wind direction retrieval algorithm is suited to retrieve wind direction from airborne SAR sounding data. The choice of mother wavelet function has a certain influence on the results, and 2D Mexican-Hat is the best mother wavelet for wind retrieval. Both co-polarization and cross-polarization airborne sounding images are suited to retrieve ocean wind direction.

Reference (21)

Catalog

    /

    返回文章
    返回