The HY-2A, which was launched on 2011/8/16, is the first microwave marine remote sensing satellite developed by China. In this paper, the significant wave height (SWH) data measured by HY-2A satellite altimeter were compared with the data observed by Jason-1/2 satellite altimeter as well as the data measured by buoys. It was found that there was a systematic error of 0.3-0.4 m between SWH obtained from HY-2A and Jason-1/2 altimeters and buoys. The comparison indicated that there was a linear relationship between the data of HY-2A and buoys, which could be used to calibrate SWH measured by HY-2A to better reflect the real marine situation. Comparisons show that the results are good and HY-2A altimetry data work well with Jason-1/2 satellite altimetry data.
Proc. SPIE. 8921, MIPPR 2013: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications
KEYWORDS: Satellites, Image processing, Remote sensing, Geographic information systems, Data processing, Spatial resolution, Oceanography, Product distribution, Current controlled current source, Data fusion
Satellite altimeters are widely used in the research of ocean dynamics. Data fusion methods such as Kriging method, successive correction method and inverse distance to a power method are used in this paper, and the appropriate parameters for these methods are achieved for the fusion of sea surface wind speed (SSW) data from GFO, Jason-1, Jason-2 and Envisat altimeters in China Seas and nearby. It is shown that (1) SSW fusion needs at least 3 satellites; (2) different methods have little impact on the merged result when using enough data; (3) the characteristics and distribution of result are agreed well with the statistical data in the study area.