基于GNSS的新型大气边界层探空仪

A new atmospheric boundary layer sonde based on GNSS

针对传统大气边界层探空系统存在的探测性能不足、数据精度不高、作业成本昂贵、威胁航空安全等不足,设计了一种基于全球导航卫星系统(GNSS)的新型大气边界层探空仪。该仪器采用卫星导航测风技术实现对高空风速、风向的反演,采用多传感器融合技术实现对温度、湿度、气压等气象要素测量,同时可以通过外接模组实现对PM_(2.5)等大气污染物的监测。测试结果表明,探空仪在温度、湿度、风速和风向平均偏差分别为0.19℃、0.62%,0.25 m/s、0.62°,均满足高空气象探测的精度要求,可广泛应用于气象探测、城市规划以及环境评价等领域的大气边界层特性研究。

Aiming at the shortcomings of traditional atmospheric boundary layer sounding system,such as insufficient detection performance,low data accuracy,high operating cost and threatening aviation safety,a new atmospheric boundary layer sounding instrument based on global navigation satellite system(GNSS)is designed.The instrument uses satellite navigation wind measurement technology to realize the inversion of wind speed and direction at high altitude,and uses multi-sensor fusion technology to realize the measurement of meteorological elements such as temperature,humidity and air pressure.At the same time,it can monitor PM_(2.5) and other air pollutants through the external module.The test results show that the average deviations of the radiosonde in temperature,humidity,wind speed and wind direction respectively are 0.19℃,0.62%,0.25 m/s and 0.62°,which meet the accuracy requirements of high-altitude meteorological detection.It can be widely used in the study of atmospheric boundary layer characteristics in meteorological detection,urban planning and environmental evaluation.