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The Surface Water and Ocean Topography Mission (SWOT): The Ka-band Radar Interferometer (KaRIn) for water level measurements at all scales

机译:地表水和海洋地形任务(SWOT):用于各种规模水位测量的Ka波段雷达干涉仪(KaRIn)

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The Surface Water and Ocean Topography (SWOT) mission will study ocean mesoscale and submesoscale phenomena and provide an inventory of storage change and discharge for fresh water bodies and rivers. In this paper, we examine the combination of measurements that will be used by SWOT to achieve a globally consistent data set. We introduce a new channel in the SWOT measurement that combines data transmitted by the interferometer antennas and received by the radiometer antenna allows the closing of the SWOT nadir coverage gap. This new mode also allows for improved calibration between the nadir altimeter and the interferometer, resulting in consistent range measurements. Consistency in the phase measurements is achieved using a mixture of cross-over calibration combined with optimal estimation of system error drift.
机译:地表水和海洋地形(SWOT)任务将研究海洋中尺度和亚中尺度现象,并提供淡水水体和河流的存储变化和排放清单。在本文中,我们研究了SWOT用来实现全局一致的数据集的度量的组合。我们在SWOT测量中引入了一个新通道,该通道结合了干涉仪天线发送的数据和辐射计天线接收的数据,从而可以缩小SWOT天底覆盖范围。这种新模式还可以改善最低点高度计和干涉仪之间的校准,从而实现一致的范围测量。使用交叉校准与系统误差漂移的最佳估计相结合的方法,可以实现相位测量的一致性。

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