NDLI: High-frequency radar cross-sections of swell-contaminated seas for a pulsed waveform

Content Provider	IET Digital Library
Author	Shen, Chengxi Gill, Eric Huang, Weimin
Abstract	The first- and second-order monostatic cross-sections of swell-contaminated seas for high-frequency ground wave pulsed radar operation are derived from the fundamental electric field equations. In this case, the ocean surface, a mixture of both swell and wind wave components, is first represented with a Fourier series. In one of the two approaches used, the total Fourier coefficient is expanded as a linear sum of the contribution from swell and wind waves without considering the possible interaction between the two regimes; whereas in a second, more general situation, the analysis includes coupling effects between the wind waves and swell. Then, the corresponding electric fields received from the swell-contaminated sea surface are obtained. A Fourier transform of the autocorrelation of the electric fields gives the Doppler power spectral density (PSD), and a comparison between this PSD and monostatic radar range equation yields the radar cross-sections. Simulation shows that the assumption incorporating the coupling effects leads to results that better agree with historical field observations. Overall, the model proposed here not only lays a solid foundation for the development of future swell inversion algorithms, but also reveals the existence of non-linear energy transfer between swell and wind waves from a new perspective.
Starting Page	382
Ending Page	395
Page Count	14
ISSN	17518784
Volume Number	8
e-ISSN	17518792
Issue Number	Issue 4, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/8/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2013.0037
Journal	IET Radar, Sonar & Navigation
Publisher Date	2013-09-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Doppler Power Spectral Density Doppler PSD Doppler Radar Electric Field First-order Monostatic Cross-sections Fourier Coefficient Fourier Series Fourier Transform Fourier Transforms Function Theory And Analysis Fundamental Electric Field Equation High-frequency Ground Wave Pulsed Radar Operation High-frequency Radar Cross-sections Historical Field Observations Instrumentation And Technique For Geophysical, Hydrospheric And Lower Atmosphere Research Integral Transforms Monostatic Radar Range Equation Nonlinear Energy Transfer Ocean Surface Oceanographic And Hydrological Technique And Equipment Oceanographic Equipment Pulsed Waveform Radar Cross Section Radar Equipment Remote Sensing by Radar Second-order Monostatic Cross-sections Swell Inversion Algorithm Swell-contaminated Seas System And Application Wind Wave Wind Wave Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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