High Temporal Resolution Path-Average Rain Gauge with 50-GHz Band Microwave
High Temporal Resolution Path-Average Rain Gauge with 50-GHz Band Microwave
复制标题
采用 50 GHz 频段微波的高时间分辨率路径平均雨量计
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
K. Nakamura
中科院分区：
文献类型：
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作者：
H. Minda;K. Nakamura
摘要 雨量雷达测量瞬时空间平均降雨量，而传统雨量计直接测量点降雨量，时间分辨率较低。因此，传感器分辨率的差异给雨雷达验证带来了困难，尤其是星载雨雷达。因此，通过微波链路进行降雨测量已经提出了几十年，因为它估计瞬时路径平均降雨量。因此，预计微波链路雨量计将至少部分克服降雨雷达验证中的问题，为此开发了 50 GHz 频段微波链路[路径平均雨量计 (PRG)]，并自 2000 年 9 月以来一直在运行。在本文中，作者通过简单的模型以及与雨量计和翻斗式雨量计的降雨量比较，展示了 PRG 系统的潜力。在 2003 年的实际降雨事件中，仪器观察到的差异在 15% 以内（一半情况在 10% 以内）。这证实了...
Abstract Rain radar measures instantaneous spatial-average rainfall, while conventional rain gauges directly measure point rainfall with low temporal resolution. Thus differences in the resolution of the sensors create difficulties for rain radar validation, especially for spaceborne rain radar. Accordingly, rainfall measurement by microwave link has been proposed for several decades, as it estimates instantaneous path-average rainfall. Thus it is expected that the microwave link rain gauge will overcome, at least partly, the problems in the rain radar validation, toward which a 50-GHz band microwave link [the path-averaged rain gauge (PRG)] was developed that has been in operation since September 2000. In this paper, the authors show the potential of the PRG system by a simple model and rainfall comparison with a disdrometer and a tipping-bucket rain gauge. Differences observed by the instruments were within 15% (within 10% in half of the cases) during actual rain events in 2003. This confirmed that the ...