中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共3条，第1-3条

帮助

条数/页：排序方式：
	Measuring boundary-layer height under clear and cloudy conditions using three instruments 期刊论文 iSwitch采集 Particuology, 2016, 卷号: 28, 页码: 15-21 作者: Wang, Chenggang; Shi, Hongrong; Jin, Lianji; Chen, Hongbin; Wen, Huayang 收藏 \| 浏览/下载：48/0 \| 提交时间：2019/05/09 Boundary-layer height Atmospheric radiation measurement experiment Gps sounding Wind profile radar Micro-pulse lidar
	The approximate calculation of atmospheric path radiance in close range and horizontal direction (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China 作者: Sun Z.; Chen Y.; Zhang Y. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements it is compared with the results of MODTRAN and measurement in experiment. It is revealed that the accuracy of software is 7.8% under the help of the atmospheric observation equipment and the formula is 4.9% MODTRAN and other software likewise which could demonstrate the validity of the pproximate calculation formula in close range and horizontal direction. In this article the indeterminacy rate could be around 10~20% in the process of deducing and experiment it is highly restricts the measurement accuracy of objective radiation. For this reason the validity of the approximate calculation formula in close range and horizontal direction is fully proved it is quite significant to develop the study of measure and calculation in path radiance. The approximate calculation formula for path radiance in close range and horizontal direction is expressed in this article which supply a new method in approximate calculation of path radiance for objective radiation measurement. (2013) Trans Tech Publications Switzerland.
	Infrared signature measurement of targets accounting for atmospheric attenuation (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China 作者: Yang C.-Y.; Lu M.; Zhang J.-P.; Cao L.-H. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 Infrared radiation signature measurement of targets is one of important ways for target signature acquirement and target recognition. When measuring the infrared signature of a target in the atmosphere molecules and aerosol particles in the atmosphere would attenuate the infrared radiation from the target and at the same time the air path radiation would be added to the target radiation. Therefore in order to obtain the intrinsic infrared radiation of the target it is necessary to perform atmospheric correction in the process of target radiation inversion. A model for target radiation measurement and inversion was established and precision analysis on the model was given. A longwave infrared camera was used to perform infrared signature measurement experiment on an ISDC extended-area blackbody. Based on atmospheric parameters the atmospheric transmittance and the air path radiation between the blackbody target and the camera were calculated by using the MODTRAN software for use in atmospheric correction in the target radiation inversion process. The experimental results showed that radiation inversion precisions were about 7.3%9.3%. Additionally inversion precision will improve as target temperature rises. 2010 IEEE.