楊世維

（云南省水文水資源局保山分局，云南 保山 678000）

　　摘  要：瓦窯水文站水流湍急，坡陡垂直高差大，傳統的浮子式或壓力式水位計存在附屬設施施工困難，觀測過程歷時較長且難度大等缺陷，為此引進OTTRLS高精度雷達水位計用于水位觀測。為保證瓦窯水文站水位資料觀測精度及資料序列的一致性，在分析OTTRLS雷達水位計測量原理基礎上，收集同時期雷達水位計遙測與人工水尺觀測的492組數據進行同步比測，并進行誤差分析。比測分析結果表明：置信水平95% 的綜合不確定度為2.47 cm，系統誤差為0.069 cm，均小于水位觀測標準規定的不確定度和誤差，滿足現行水位觀測國家標準規范要求，OTTRLS雷達水位計在山區性河流中使用具有較好的適應性，觀測數據可用于整編，滿足山區性河流陡漲陡落水位測量對精度的要求。

　　關鍵詞：高精度雷達水位計；水位觀測；波動補償；比測；應用探討；山區性河流

Discussion on application of OTTRLS radar water level meter in mountainous rivers

YANG Shiwei

(Yunnan Bureau of Hydrology and Water Resources, Baoshan 678000,China)

　　Abstract: Wayao Hydrological Station is characterized by turbulent water flow, steep slope and large vertical height difference. Traditional float or pressure water level gauges have some defects such as difficult construction of auxiliary facilities, and long and hard observation process. Therefore, OTTRLS high-precision radar water level gauge is introduced for water level observation. In order to ensure the observation accuracy of water level data and the consistency of data sequence in Wayao Hydrological Station, 492 sets of data from radar water level gauge telemetry as well as artificial water gauge observation in the same period are collected and compared synchronously based on the analysis of OTTRLS radar water level gauge measuring principle. Error analysis is also carried out. Comparison and analysis results show that the comprehensive uncertainty of 95% of the confidence level is 2.47 cm and systematic error is 0.069 cm, both of which are less than the uncertainty and error specified in the water level observation standard. The results meet the requirements of current national standards for water level observation. The OTTRLS radar water level meter adapts well when used in mountainous rivers, and the observed data can be used for compilation. It meets the precision requirement of the measurement of steep rise and fall water level of mountainous rivers.

　　Key words：high-precision radar water level gauge; water level observation; volatility compensation; comparison measurement; discussion on application; mountainous rivers