FTS RSS Temperature Test 1, John C. Stennis Space Center, Nov 2015

Two identical Radar Stage Sensors from Forest Technology Systems, were evaluated to determine if they are suitable for U.S. Geological Survey (USGS) hydrologic data collection. The sensors were evaluated in laboratory conditions to evaluate the distance accuracy of the sensor over the manufacturer’s specified operating temperatures and distance to water ranges. Laboratory results were compared to the manufacturer’s accuracy specification of ±0.007 foot (ft) and the USGS Office of Surface Water (OSW) policy requirement that water level sensors have a measurement uncertainty of no more than 0.01 ft or 0.20 percent of the indicated reading. In the temperature chamber test, both sensors were within the manufacturer’s specification for more than 90 percent of the data points collected over a temperature range of –40 to +60 °C at a fixed distance of 8 ft. Initial testing was performed with radar firmware version 1.05.

本研究对两台产自Forest Technology Systems的同型号雷达水位传感器（Radar Stage Sensors）开展评估，以验证其是否适用于美国地质调查局（U.S. Geological Survey, USGS）的水文数据采集工作。本次评估在实验室环境下进行，针对制造商指定的工作温度范围与水体测距范围，测试传感器的测距精度。将实验室测试结果与两项标准进行比对：一是制造商给出的±0.007英尺（foot, ft）精度规格，二是美国地质调查局地表水办公室（Office of Surface Water, OSW）的政策要求：水位传感器的测量不确定度不得超过0.01 ft，或不超过示值读数的0.20%。在温箱测试环节，当固定测距为8英尺、测试温度范围覆盖-40℃至+60℃时，两台传感器的90%以上采集数据点均符合制造商的精度规格要求。本次初始测试采用的雷达固件版本为1.05。