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Chaotic Characteristics in HF Radar Backscatter from the Ocean Surface

DONG Hua chun,ZONG Cheng ge,QUAN Tai fan(Research Institute of Electronic Engineering,Harbin Institute of Technology,Harbin 150001,China)  
HF radar backscatter from the ocean surface shows nonlinearities and time variation of its spectrum.However,the spectrum analysis method cannot reflect the evolution of the HF backscatter in time domain.In this paper,the chaotic dynamic approach is used to analyze the chaotic characteristics of the HF backscatter,and based on the observed data,it is concluded for the first time that the HF radar backscatter from the ocean surface possesses some nature of chaotic process.This conclusion will be of much significance in the target detection and ocean sensing of HF radar.
【Fund】: 国家自然科学基金!(No .69672 0 2 43 );; 国家教委博士点基金
【CateGory Index】: TN959.72
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