高超声速飞行试验风场建模与仿真分析

从高超声速飞行试验的飞行高度范围出发，对平均风、阵风／突风、大气紊流及随机风场进行了分析与研究．在对实测风场数据进行统计处理的基础上，对地面风场、低／中空风场、高空风场建立了数学模型，并采用参数辨识方法，确定其参数值．为验证模型的正确性与合理性，随机选取四组地面风场测量数据和三组空中风场测量数据进行分析，结果表明，本文的风场模型基本能够反映实际大气风场的变化，在较多情况下其变化规律与实测风场较吻合，风场数据基本位于风剖面附近或以内，载入随机风场后更能最大程度地模拟风场变化规律．

Analyses of High Altitude Wind Model of Hypersonic Flight Test

Based on some actual high altitude range in hypersonic flight test, the characters of wind such as mean wind, gust, turbulence and random wind are analyzed, and then the mathematic models of ground wind, low/middle-altitude and high-altitude have been established. The relevant parameters would be obtained by means of parameter-identification methods to validate the feasibility of wind model. Furthermore, four groups of ground wind data and three groups of flight wind data are choosed randomly to investigate. All results show that wind profile of model has represented the atmospheric environment and the regularity of wind field would be mostly same with actual wind data or it could cover actual wind data. The wind model has simulated approximately the variation rule of actual wind field to a great extent, especially when random wind field is added to wind model.