基于北斗一号的高空风探测方法研究

我国自2000年建立北斗一号导航系统,2003年开放民用,北斗系统在气象领域的应用广受关注。分析研究北斗一号应用于高空风探测的可行性并进行了试验和验证。利用探空仪实时探测的高精度温、压、湿数据,实时确定探空仪高度,注入北斗定位单元,通过无源定位方式确定探空仪位置,获取计算层风。通过与GPS测风系统进行双施放比对,风速偏差约为0.5m/s,初步满足业务应用要求。

Upper Wind Sounding Method Based on Beidou I Navigation System

Chinese Beidou-I was completed in 2000 and has been opened for public use since 2003.The application of Beidou-I data in the meteorological field is widely concerned.The feasibility of upper wind sounding with Beidou-I is analyzed,experimented and validated.The three-dimensional location of the radiosonde is determined in passive positioning way by injecting the real-time height,which is determined by using the real-time high-precision sounding data from radiosondes,into the Beidou positioning unit by twin-flight test with the GPS and Beidou radiosondes,so the calculated winds at the sounding level are derived.The deviation between the two systems is about 0.5 m/s,which proved that the Beidou sounding system preliminarily meets operation requirements.