天空背景 meaning in English
sky background
skyline
Examples
- This paper investigates the approach to estimate the maximum detection range of an infrared point - target against sky background based on the minimum resolved contrast ( mrc ) criteria
摘要基于最小分辨对比度准则，研究了天空背景下红外点目标的最大探测距离估计方法。 - From the content of the paper , it can be made of two parts : one is the radiative transfer on surface , and the other is the designing of the emulating - software on sky background
单从本论文内容上看,主要分为两个方面:下垫面在对空观测中的影响,以及天空背景仿真软件开发。 - In order to detect and track dim - point targets under the complex background of sky , a high speed method is put , which uses multiwindow , little yardstick , repetitious subtracting and fusing images
摘要针对复杂天空背景下弱点目标的检测与跟踪，提出了一种利用多窗口、小尺度、多次差影融合点目标图像的快速检测与跟踪方法。 - Secondly , other parameters such as temperature difference and emissivity of target and sky , molecular absorptive transmittance , instantaneous field of view ( ifov ) , contrast threshold and radiant wavelength are discussed in detail
然后，对目标天空背景温差、发射率，气溶胶衰减系数，瞬时视场、对比度探测阈值以及辐射波长等参数作了详细讨论。 - The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning , combined with a thorough analysis of the spectrum radiating feature of the target and the sky background , the atmosphere conditions , spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr , the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made , and all related factors that have an impact on the effect range are analyzed as well
从探测器靶面上辐照度信噪比的概念、探测器的可探测辐照度最小值出发，在详细分析目标、天空背景的光谱辐射特性、大气条件、光谱滤波技术以及系统各环节对探测器靶面上目标与背景辐照度信噪比的影响的基础上，推导了炸点测量系统对爆炸的飞行弹体的作用距离方程，分析了影响作用距离的诸因素。