标准大气条件

航空发动机在高空台上模拟标准大气条件试验的性能研究

Performance Investigation of Aero-engine Ground Test Under Standard Atmosphere in ATF

增益矩阵在标准大气条件下设计，并通过相似理论将其扩展到全线。

Gain matrix K is a constant matrix design at sea-level static condition , and should be transformed to actual flight condition with similarity correction factors .

但在标准大气条件下，由于几类误差相互抵消，因此近距离测定强对流云回波顶高精度较高。

But echo top height errors are negligible in short range under standard condition of the atmosphere because errors cansed by several factors counteract each other , BO the radar measurements of convective cloud top heights are quite accurate .

详细分析了影响电视跟踪系统作用距离的因素，分析了目标、天空背景在电视像面的照度和对比度，建立了标准大气条件下，电视系统作用距离的数学模型。

It discusses the factors that affect the effective distance of TV , analyzes the lum and contrast of targets and sky background on the imaging surface of TV . A mathematic model of effective distance of TV under the standard air condition is also constructed .