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VHF Radar Measurements of Flow in a Salt Marsh Creek

机译:盐沼溪流流动的VHF雷达测量

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A VHF ocean radar system was deployed for one month in a salt marsh in coastal Georgia, USA. In this environment, radar backscatter from the marsh grass is highly attenuated and scatter from water in the narrow creeks has a broad band of Doppler shift due to the horizontal variation in water speed across the channel. By assuming a monotonic velocity profile from the edge to the middle of the channel, a theoretical relationship is derived to link the broadening of Bragg energy in the echo spectrum to varying water speed. A methodology is developed to derive the cross-creek profile of velocity variation in the main channel of the salt marsh.
机译:在美国沿海佐治亚州沿海佐治亚州的盐沼地部署了VHF海洋雷达系统。在这种环境中,来自沼泽草的雷达反向散射高度衰减,并且由于横跨通道的水速度的水平变化,窄小溪中的水散布具有宽带多普勒频移。通过假设从频道的边缘到中间的单调速度曲线,得出了理论关系,以将回波光谱中的布拉格能量扩展链接到不同的水速度。开发了一种方法来导出盐沼主通道中的速度变化的十字溪轮廓。

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