摘要
赵震炎等提出了一种数字摸拟Dryden大气紊流的方法。该方法使用方便,并具有一定的理论基础。但是在某些步长情况下它的相关函数和Dryden模型的理论值吻合得还不够令人满意。本文从理论上分析了产生误差的原因,并且提出了改进的方法。通过相关性检验可以看到改进后的仿真结果非常符合Dryden谱的大气紊流模型。
Professor Zhao Zhenyan has advanced a digital simulation method for Dryden atmospheric turbulence.This method is very convenient in use and possesses a considerably firm theoretical foundation.But for some time-step-lengths,its autocorrelation functions are not satisfactorily coincident with the theoretical values.The causes of error are analysed on a theoretical basis and an improved method is presented.Through the verification of autocorrelation property,we can find the improved simulation results are found very close to those of Dryden atmospheric turbulence model.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1990年第3期57-63,共7页
Journal of Beijing University of Aeronautics and Astronautics
关键词
大气紊流
数字仿真
飞行模拟器
atmospheric turbulence,atmospheric disturbance,digital simulation,flight simulator
