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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Applying Satellite Altimetry to Wetland Water Levels Monitoring (Case Study: Louisiana Wetland)
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Applying Satellite Altimetry to Wetland Water Levels Monitoring (Case Study: Louisiana Wetland)

机译：将卫星测高仪应用于湿地水位监测（案例研究：路易斯安那州湿地）

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摘要

The idea of the application of satellite radar altimetry for inland water study has been considered for about two decades. It has always been much challenging, because the returned signal from inland water, in comparison to the ocean one, is very different. Thus the onboard satellite processing unit would not be able to determine the exact tracking point. Therefore, the execution of waveform re-tracking is efficient to correct the presented Range. The purpose of this letter is the application of the three of waveform re-tracking methods, namely OCOG, NASA $beta$ and Threshold and known as common methods, in order to monitor the Louisiana wetland water level. The validation is done by calculating the Correlation coefficient between the satellite altimetry and the tide gauge observations. The correlation coefficient has calculated between the two time series made from tide gauge data and satellite data. The coefficient value without exerting re-tracking is 0.4758 and with re-tracking is 0.6462. Numerical results shows, accuracy of water level monitoring increase up to 35.81% by the waveform re-tracking execution. In addition the results of all methods are compared with each other.
机译：将卫星雷达测高仪用于内陆水域研究的想法已经考虑了大约二十年。一直以来都充满挑战，因为与海洋相比，内陆水域返回的信号非常不同。因此，机载卫星处理单元将无法确定确切的跟踪点。因此，执行波形重新跟踪可以有效地校正显示的范围。这封信的目的是应用三种波形重新跟踪方法（即OCOG，NASAβ和阈值），这些方法被称为通用方法，以监视路易斯安那州的湿地水位。通过计算卫星测高仪与潮汐仪观测值之间的相关系数来完成验证。已根据潮汐仪数据和卫星数据在两个时间序列之间计算了相关系数。不进行重新跟踪的系数值为0.4758，而进行重新跟踪的系数值为0.6462。数值结果表明，通过波形重新跟踪执行，水位监测的精度提高了35.81％。另外，将所有方法的结果相互比较。

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