Long-time non-contact water level measurement with a 5.8-GHz DC-coupled interferometry radar
Long-time non-contact water level measurement with a 5.8-GHz DC-coupled interferometry radar
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DOI：
10.1109/i2mtc.2018.8409735
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发表时间：
2018-05
期刊：
影响因子：
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通讯作者：
Zhengyu Peng;Ashish Mishra;Justin R. Davis;Jennifer A. Bridge;Changzhi Li
中科院分区：
文献类型：
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作者：
Zhengyu Peng;Ashish Mishra;Justin R. Davis;Jennifer A. Bridge;Changzhi Li
由热带气旋、海啸和其他许多现象引起的洪水是世界各地发生的一种自然灾害。虽然这些灾害无法预防，但可以通过建立预警系统，使社区更具复原力，并将灾害对生命和基础设施造成的损害降至最低。基于微波的系统提供非接触式测量设置来监测水位，因此需要较低的维护和操作成本。本文设计了一种直流耦合5.8GHz干涉雷达，并通过对长时间注水和排水的桶中水位的观测进行了测试。通过增加更多的增益的RF链和删除的增益在基带中，所提出的水位监测雷达系统消除了复杂的直流调谐结构的要求，在以前的作品。实验结果表明，所提出的水位监测雷达系统能够准确地测量水的相对位置与毫米精度。
Flooding caused by tropical cyclones, tsunami, and many other phenomena is one type of natural disaster that occurs all around the world. While these disasters cannot be prevented, the communities can be made more resilient and damages caused by them to lives and infrastructure can be minimized by developing early warning systems. Microwave-based systems provide a non-contact measurement setup to monitor water level, thus requiring low maintenance and operation costs. In this paper, a DC-coupled 5.8-GHz interferometry radar was designed and tested by observing water level in a barrel, which had water poured in and drained out over a long-time period. By adding more gains to the RF chain and removing the gain in the baseband, the proposed water-level monitoring radar system eliminates the requirement of complex DC tuning structure in the previous works. The experiment demonstrated that the proposed water-level monitoring radar system was able to accurately measure the relative position of water with mm-accuracy.