The efifect of wave breaking on surface wave imaging by Synthetic Aperture Radar

被引：0

作者：

孙建 ^{[1
]}

管长龙 ^{[1
]}

史剑 ^{[2
]}

机构：

[1] Physical Oceanography Laboratory

[2] The College of Meteorology

来源：

ChineseJournalofOceanologyandLimnology | 2006年 / 01期

关键词：

Synthetic Aperture Radar; modulation transfer function; wave breaking; tilt modulation; hydrody-namic modulation;

D O I：

暂无

中图分类号：

P731.22 [波浪];

学科分类号：

0707 ;

摘要：

<正>The effect of ocean wave breaking as a non-Bragg mechanism on backscattering cross-section and modulation transfer functions (MTF) of radar was investigated based on Bragg resonance theory and parametric method. The result showed that the additional effect of wave breaking on backscattering cross-section is not more than 20% except for the small incident angle of VV polarized electromagnetic (e.m.) wave but is significant for HH polarized e.m. wave. Breaking waves lead to increase in the modulus of tilt modulation MTF and the larger the wind speed, the faster the increase. For large incident angle, the modulus of tilt modulation MTF with wave breaking decreases quickly with incident angle for HH polarization and approach to that without wave breaking for VV polarization. The hydrodynamic MTF increases 30%-60% when considering wave breaking and the increase is larger for HH polarization than for VV polarization.

引用

页码：21 / 27

页数：7