机构

• 地理科学与资源研究所 [2]
• 长春光学精密机械与物... [1]
• 寒区旱区环境与工程研... [1]
• 遥感与数字地球研究所 [1]

采集方式

• OAI收割 [4]
• iSwitch采集 [1]

内容类型

• 会议论文 [2]
• 期刊论文 [2]
• SCI/SSCI论文 [1]

发表日期

• 2017 [1]
• 2014 [2]
• 2011 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A Kind of Snow Grains and Shape Parameters Retrieval New Algorithm Based on Spectral Library 期刊论文  iSwitch采集 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 卷号: 37, 期号: 5, 页码: 1504-1508 作者:  Wang Jie;  Huang Chun-lin;  Wang Jian;  Cao Yong-pan;  Hao Xiao-hua 收藏  |  浏览/下载：42/0  |  提交时间：2019/10/09 Spectral library  Look-up-table minimal angle model  Asymptotic radiative transfer model  Snow grain size  Snow shape parameters   Inversion of the PROSAIL model to estimate leaf area index of maize, potato, and sunflower fields from unmanned aerial vehicle hyperspectral data SCI/SSCI论文  OAI收割 2014 作者:  Wu H. 收藏  |  浏览/下载：41/0  |  提交时间：2014/12/24 Leaf area index  PROSAIL  Hyperspectral  Look-up table  Dual-angle  observations  radiative-transfer model  vapor column abundance  remote-sensing data  reflectance data  chris/proba data  global products  vegetation lai  variables  retrieval  grassland   Inversion of the PROSAIL model to estimate leaf area index of maize, potato, and sunflower fields from unmanned aerial vehicle hyperspectral data 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION, 2014, 卷号: 26, 页码: 12-20 Duan, SiBo(段四波); Li, ZL; Wu, H; Tang, BH; Ma, LL; Zhao, EY; Li, CR 收藏  |  浏览/下载：36/0  |  提交时间：2014/02/19 Leaf area index  PROSAIL  Hyperspectral  Look-up table  Dual-angle observations   Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：39/0  |  提交时间：2013/03/25 A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However  optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome  which demanded gimbal point coincide with the center of the dome exactly. In fact  gimbal point displacement could not be eliminating due to fabrication  assembly and vibration  therefore the optical axis pointing error generated. In this paper  the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed  and the theoretical expression of the optical axis pointing error was derived based on geometric optics  and the error dynamics was explored by numerical. Take a visible light image seeker as a case  the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm  and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm  the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore  with the gimbal displacement increasing  the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range  which had to be limited strictly in the gimbal design process. 2011 IEEE.   Analysis of factors influencing the accuracy of CRDInSAR 会议论文  OAI收割 Sixth International Symposium on Digital Earth: Data Processing and Applications, Bellingham Fu, Wenxue; Guo, Huadong; Tian, Qingjiu; Guo, Xiaofang 收藏  |  浏览/下载：153/0  |  提交时间：2014/12/07 corner reflector  CRDInSAR  DInSAR  look angle  error analysis  PERMANENT SCATTERERS TECHNIQUE  RADAR INTERFEROMETRY  SAR  INTERFEROMETRY  LANDERS EARTHQUAKE  SURFACE  DEFORMATION  SUBSIDENCE  FRANCE