基于原位探测的高空气球风场数据修正方法

Correction Method of Wind Field Data Based on In-situ Detection

摘要:

对目前高空气球领域所出现的风场数据使用情况进行了研究，针对其存在时效性与针对性不强以及对针对特定区域精度不足、数据密度稀疏等问题，通过对原位探测技术（ISD，In situ detection）的研究，构建了高空气球飞行试验领域的风场误差数据修正模型，最终提出了一种基于原位探测的高空球风场数据修正方法；该方法通过原位探测手段获取高空气球执行飞行试验任务时所需特定区域的风场数据，从而对模式风预报产品进行修正，在高空气球飞行实验区域内提高了风场数据的准确度；使修正后的风场数据在的应用中准确度得到了提高；并最终使用中国某地区的风场数据先后进行仿真试验及实际飞行试验，仿真结果表明，ISD可有效降低模式风预测风速的平均相对误差；在实际飞行实验中，u风误差由模式风预报的2.418 m/s变为ISD模型的1.403 m/s，降低了41.98%；v风误差由模式风预报的0.801 m/s变为ISD模型的0.519 m/s，降低了35.21%。

Abstract:

The current use of wind field data in the field of high-altitude balloons has been studied. In view of its lack of timeliness and pertinence, insufficient accuracy for specific areas, and sparse data density, the in-situ detection technology (ISD, In situ detection), built a wind field error data correction model in the field of high-altitude balloon flight test, and finally proposed a high-altitude balloon wind field data correction method based on in-situ detection. The method obtains the wind field data of a specific area required by the high-altitude balloon to perform the flight test mission by means of in-situ detection, so as to correct the model wind forecast product, and improve the accuracy of the wind field data in the high-altitude balloon flight test area. The accuracy of the corrected wind field data has been improved in the application. Using the wind field data in a certain region of China, the simulation test and the actual flight test have been carried out successively. The simulation results show that the ISD can effectively reduce the average relative error of the predicted wind speed of the model wind; /s changed to 1.403 m/s of the ISD model, a decrease of 41.98%; the v wind error changed from 0.801 m/s of the model wind forecast to 0.519 m/s of the ISD model, a decrease of 35.21%.