ABSTRACT The growing availability of smart devices with advanced sensors has increased the opportunities for citizen science applications for environmental monitoring. Accurate and widespread monitoring of river stage is vital for modeling water resources. Reliable data points are required for model calibration and validation in forecast studies. While current embedded monitoring systems provide accurate measurements, the cost to replicate these systems on a large domain is prohibitively expensive, limiting the quantity of data available. This project describes a new method to accurately measure river levels using smartphone sensors. Pictures of the same point on the river’s surface are taken to perform calculations based on the GPS location and spatial orientation of the smartphone. The proposed implementation is significantly more accessible than existing water measuring systems while offering similar accuracy. A case study is performed to evaluate the accuracy and sensitivity of the measurements to changes in distance.

中文翻译：

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使用智能手机在未测量位置进行舞台测量的众包方法

摘要 具有先进传感器的智能设备的日益普及增加了公民科学应用环境监测的机会。对河流水位进行准确和广泛的监测对于模拟水资源至关重要。预测研究中的模型校准和验证需要可靠的数据点。虽然当前的嵌入式监控系统提供准确的测量，但在大域上复制这些系统的成本非常昂贵，从而限制了可用数据的数量。该项目描述了一种使用智能手机传感器准确测量河流水位的新方法。拍摄河流表面同一点的照片，以根据智能手机的 GPS 位置和空间方向进行计算。与现有的水测量系统相比，拟议的实施方式更易于访问，同时提供类似的精度。执行案例研究以评估测量对距离变化的准确性和敏感性。