关键词: 水文应急监测;测流系统;GNSS;手机APP;

Abstract: In order to improve the ability of hydrological emergency monitoring technology, we design a GNSS flow measurement system platform that integrates Web terminal and mobile phone App terminal. Based on 5G and GNSS high-precision positioning and tracking technology, the system platform realizes multi-point terminal measurement and multi-user online monitoring. It has the functions of real-time data viewing, track playback viewing, data storage and downloading. It can also calculate and analyze the observed data. The test results showed that the relative error of measurement precision index was less than 1%. The App has a simple interface and is easy to operate. It enables users at all levels to check the monitoring situation at any time through mobile phones and other terminals, which can meet the needs of hydrological emergency monitoring.

Key words: hydrological emergency monitoring; flow measurement system；GNSS；mobile phone APP