基于传感器阵列的野外基线环境参数自动测量系统研制

为了保证野外测距精度,研制了一套环境参数自动测量系统,该系统通过在野外基线沿线布置密集的气温、气压与湿度传感器阵列,精确测量光路气温、气压及湿度等环境参数,进行空气折射率修正。采用μ-base测距仪在不同气候条件下进行验证实验,测量距离为144 m。实验结果表明,采用该系统测量环境参数,进行空气折射率修正,其修正误差引入的距离测量不确定度优于3.0×10^-7(k=2)。

Development of Outdoor Baseline Environment Parameters Measurement System Based on Sensor Array

In order to ensure the accuracy of distance measurement, a set of environmental parameters automatic measurement system is developed, by deploying dense sensor array along the outdoor baseline, including temperature sensors, air pressure sensors and humidity sensors, measuring the air temperature, air pressure and humidity and other environmental parameters on the optical path, performing air refractive index correction. Using μ-base distance meter to conduct distance measurement experiments under different climatic conditions, the measuring distance is 144 m. Experimental results show that using the system to measure environmental parameters, performing air refractive index correction, distance measuring uncertainty introduced by air refractive index correction error is better than 3.0×10^-7(k=2).