Different HH-to-VV polarisation models performance in retrieving wind speed using Radarsat2 image mode data by CMOD5
As we known,CMOD models were developed for C-band Wpolarized SAR images,and when CMOD family models are applicable for HH-polarized SAR images such as Radarsat2 images it is necessary to convert normalized radar cross section (NRCS) (HH-polarized) to NRCS (W-polarized) by the HH-to-VV polarisation model.In this study,we discussed different HH-to-VV polarisation models performance in retrieving wind speed by CMOD5 from Radarsat2 image mode data.Image data used in this paper was taken in south of china,Hainan Island. One image was taken on condition of low wind speed while another was taken on condition of moderate wind speed. After retrieving wind speed using CMOD5 model,we compared inversion results to observation results under low and moderate wind speed conditions (the observed wind speed is 3.4m/s and 8.7 m/s).In conclusion,it is shown that three polarisation models can be applicable by acceptable error standard under different conditions. This study just gives a preliminary understanding of HH-to-VV polarisation models performance under different wind speed conditions.
NRCS polarisation model CMOD5
Weizeng Shao Changlong Guan Jian Sun Zhanfeng Sun
Physical Oceanography Laborotory,Ocean University of China,Qingdao,China
国际会议
2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)
西安
英文
1107-1110
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）