Title :
Improving sea states monitoring of nautical radar using dispersion relation of nonlinear ocean waves
Author :
Li, Haiyan ; Cui, Limin ; Qiu, Zhongfeng ; Zhang, Shufang ; He, Yijun
Author_Institution :
Grad. Univ. of the Chinese Acad. of Sci., Beijing, China
Abstract :
The purpose of this study is to discuss the influence of nonlinearity upon X-band radar observations. For simplicity, the analytical dispersion relationship of finite amplitude ocean wave theory was applied and discussed. We found that the shallow water dispersion relation curve covers more ocean wave energy than deep water and linear dispersion relationship. However, the shallow water dispersion relationship filter can not derive the ocean spectrum from radar image spectrum. The accurate measurement of ocean wave amplitude and water depth may be contributed to the results. More data are needed to analyze the reasons.
Keywords :
marine radar; ocean waves; oceanographic techniques; remote sensing by radar; X-band radar observation; deep water linear dispersion relationship; finite amplitude ocean wave theory; nautical radar; nonlinear ocean waves; ocean wave amplitude; ocean wave energy; sea states monitoring; shallow water dispersion relation curve; shallow water dispersion relationship; water depth; Backscatter; Clutter; Dispersion; Monitoring; Ocean waves; Radar antennas; Radar imaging; Sea measurements; Sea surface; Shadow mapping; dispersion relation; nautical radar; nonlinear; ocean state;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5418208
