Investigation on Doppler spectra of microwave scattering from sea surface

IOCAS-IR > 海洋环流与波动重点实验室

	Investigation on Doppler spectra of microwave scattering from sea surface
	Jiang Wen-Zheng 1,2,3; Yuan Ye-Li 1; Wang Yun-Hua 4; Zhang Yan-Min 4; Yuan, YL (reprint author), SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China.
	2012-06-01
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
卷号	61 期号:12 页码:124213-
文章类型	Article
摘要	Based on the composite surface scattering model, the analytical formulas for Doppler shift and bandwidth of radar echoes return from time-varying sea surface are derived. In our derivations, the influences of the tilt modulation, the shadow and the curvature of large-scale undulating waves are all taken into account for achieving more reasonable results. Comparisons between the theoretical results and direct numerical simulations demonstrate that the analytical formulas can significantly improve the simulated results. And the effects of the tilt modulation, the shadow and the curvature on Doppler spectral properties are discussed in detail. From the simulated results, it is found that the predicted Doppler shifts are always larger in HH-polarization than in VV-polarization due to the tilt modulation of large-scale waves. In addition, at low-grazing angles, the shadow of large-scale waves results in a rapid increase of the predicted Doppler shift, and on the contrary maks the bandwidth narrower.
关键词	Time-varying Sea Surface Electromagnetic Scattering Doppler Spectra
学科领域	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000306394400040
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/12165
专题	海洋环流与波动重点实验室
通讯作者	Yuan, YL (reprint author), SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China.
作者单位	1.SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Qingdao 100049, Peoples R China 4.Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266003, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Jiang Wen-Zheng,Yuan Ye-Li,Wang Yun-Hua,et al. Investigation on Doppler spectra of microwave scattering from sea surface[J]. ACTA PHYSICA SINICA,2012,61(12):124213-.
APA	Jiang Wen-Zheng,Yuan Ye-Li,Wang Yun-Hua,Zhang Yan-Min,&Yuan, YL .(2012).Investigation on Doppler spectra of microwave scattering from sea surface.ACTA PHYSICA SINICA,61(12),124213-.
MLA	Jiang Wen-Zheng,et al."Investigation on Doppler spectra of microwave scattering from sea surface".ACTA PHYSICA SINICA 61.12(2012):124213-.

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