Author:
Li Lun ,Wu Xiong-Bin ,Xu Xing-An , ,
Abstract
The principle of Doppler spectra detected by HFSWR (high-frequency-surface-wave radar) is given by a nonlinear integral equation from which can be extracted ocean wave parameters. By linearization, the equation can be transferred into a first kind of Fredholm integral equation approximately and can be displayed in a quadratic form. Conjunction gradient (CG) method is proposed to solve the optimization problem. Non-negative restriction is introduced to improve the involved CG algorithm and fit to the priori knowledge so that the ocean wave parameter is non-negative. Validity and accuracy of the proposed method are demonstrated by numerical simulation with different noise levels at one site and two sites.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Reference26 articles.
1. Tao Z M, Zhang Y C, Liu X Q 2004 Chin. Phys. 13 409
2. Zhang J P, Wu Z S, Zhao Z W 2012 Chin. Phys. B 21 109202
3. Zhou B, Liu W Q, Qi F 2001 Acta Phys. Sin. 50 091818 (in Chinese) [周斌, 刘文清, 齐峰 2001 50 091818]
4. Huang S X, Zhao X F, Sheng Z 2009 Chin. Phys. B 18 115084
5. Zhang Y M, Wang Y H, Zhan Z F 2010 Chin. Phys. B 19 084103