- 更多网络例句与进行仪表飞行相关的网络例句 [注:此内容来源于网络,仅供参考]
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The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.
在结构辨识中,常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失,因此,本文提出了新的有益思想,即在保留一定相关性的基础上进行辨识:将输出向量ΔW与环境函数矩阵S构成增广矩阵A,然后采用"比定阶行列式"来剔除相关向量的方法,这样既可以尽可能多地保留了对落点影响大的强相关参数,又可以对落点影响小的强相关参数给予剔除;在参数估计中,改进了特征根估计中特征根和特征向量的筛选方法,提出"近零"准则,从而大大提高了参数估计的精度;再者,鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的,因此,本文又深入分析了造成天地模型不一致的原因,提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验;最后,鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响,因此本文深入地分析了SINS制导工具误差系数与外界环境的关系,提出了基于过载变化大小的分段辨识和分段实时补偿的算法。
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Civil aircraft on instrument flight should follow the rules for instrument flight.
进行仪表飞行的民用航空器,应当遵守仪表飞行规则。
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A civil aircraft performing instrument flight shall observe instrument flight rules.
进行仪表飞行的民用航空器,应当遵守仪表飞行规则。
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Methods A moderated BF3 proportional neutron counter was used for measurement of neutron dose of cosmic radiation in cabin of B-747 flying from Beijing to New York and Beijing-Stockholm-Beijing.
采用慢化BF3中子监测器,在北京―纽约和北京―斯德哥尔摩航线飞行的B-747飞机上进行了测量,起飞、着陆阶段每2 min测一次,巡航阶段第30 min测试一次,高度和纬度利用飞机仪表读出,地磁纬度采用人造地球卫星环境手册的公式计算。
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Part-holonym brook trout , Salvelinus fontinalis2. North American freshwater trout; introduced in Europe brook trout , Salvelinus fontinalis(member-holonym) Salvelinus , genus Salvelinus
在模拟的夜间仪表气象条件下,美空军的斑点鳟鱼飞机以低空地形突防方式进行了20多个小时的飞行实验,这是首次采用合成视景显示技术进行零/零进近直至在迫降地带着陆。。。。