Dryden大气紊流模型的数字仿真技术

 本文为如何利用电子计算机产生符合Dryden模型的三维大气紊流信号（包括三个速度分量和三个角速度分量）提出了一个比较严格和完整的方法。所得结果的可靠性可以通过相关函数来检验。最后还对飞行模拟器中如何使用这一数学模型提出了一些看法。

A DIGITAL SIMULATION TECHNIQUE FOR DRYDEN ATMOSPHERIC TURBULENCE MODEL

Dryden model is Usually used in studying the response of flight vehicle to atmospheric turbulence. For a modern flight simulator, it is necessary to generate random winds（in Dryden model or sometimes others） with a digital computer. In this paper, a theoretically stricted new method to meet this purpose is proposed. By this method, we can acquire a three-dimensional atmospheric turbulence which contains three components of wind velocity and three components of wind velocity gradient. The reliability of this method is checked by comparing with the autocorrelation value obtained from the theoretical autocorrelation value. A numerical example has shown a satifactpry result. Finally, some proposals about how to use this mathematical model in flight simulator are given.