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浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：会议论文    专题：国家空间科学中心    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 A HSV-Based Fusion of InIRA SAR and GoogleEarth Optical Images 会议论文 Kyoto, JAPAN, NOV 06-09, 2018 作者:  Li, Dong;  Zhang, Yunhua;  Dong, Xiao;  Shi, Xiaojin;  Zhai, Wenshuai 收藏  |  浏览/下载：39/0  |  提交时间：2019/03/05 Hsv  Image Entropy  Image Fusion  Synthetic Aperture Radar  Optical Sensor   Epipolar Geometry Comparison of SAR and Optical Camera 会议论文 2nd ISPRS International Conference on Computer Vision in Remote Sensing (CVRS), Xiamen, PEOPLES R CHINA, APR 28-30, 2015 作者:  Li, D;  Zhang, YH 收藏  |  浏览/下载：24/0  |  提交时间：2016/07/12 Computer vision  computer SAR vision  epipolar geometry  imaging model  optical camera  synthetic aperture radar (SAR)  3D reconstruction   STEP Mission: Search for Terrestrial Exo-Planets 会议论文 European Planetary Science Congress 2013,, London, UK, 2013 Chen D.; Wu; J.; Li B. 收藏  |  浏览/下载：21/0  |  提交时间：2014/04/30 Search for Terrestrial Exo-Planest (hereafter STEP) mission is a latest advanced research project in Chinese Strategic Pioneer Program (SPP) on Space Science. STEP aims at the nearby earth-alike planets detection  comprehensive research on the planetary system and some astrometry research with 0.5 uas precision in the space  which will get the fruitful achievements in the exo-planetary and astrometry research fields. STEP will take the Space Astrometry technique in the optical band. The FOV is 0.44 degree  based on 1.2m primary and focus length is 50m. The special metrology technique will be taken to reach 0.5 uas astrometry precision  which will be idea for terrestrial exo-planets detection. The mission will take the L2 orbit.   AUTONOMOUS INTEGRATED NAVIGATION USING X-RAY PULSARS AND ASTEROIDS 会议论文 63rd International Astronautical Congress 2012, IAC 2012, Naples, Italy, 2012 Yang Chengwei; Gao Dong; Zheng Jianhua 收藏  |  浏览/下载：34/0  |  提交时间：2014/04/30 To improve the navigation performance of the spacecraft during interplanetary cruise  a novel integrated navigation system is proposed. For X-ray pulsar navigation (XNAV) is a hot and prospective research subject  and the optical navigation using asteroids is practical in space engineering  we designed an autonomous navigation system using one X-ray detector and one navigation camera. The measurement models of the XNAV based on the time difference of arrival and the optical navigation based on the images of asteroids are presented. To enhance practicality  the X-ray pulsars and asteroids are observed by turns. The batch least square filter  used by Deep Space I  is adopted to estimate the system state. The numerical simulation results show that the integrated navigation is feasible on the interplanetary cruise orbit. Moreover  compared with the XNAV and the optical navigation  the integrated navigation system can provide higher navigation performance.   Linear-mode characters of near-infrared wavelength InGaAs APDs for optical communication 会议论文 4th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Advances in Infrared Imaging and Applications, Beijing, PEOPLES R CHINA, 2011 作者:  He Wei;  Du Ke-ming;  Wang Chao;  Sun Zhi-bin;  Jiang Yuan-da 收藏  |  浏览/下载：27/0  |  提交时间：2014/12/15 InGaAs APD  linear-mode  gate-mode  infrared wavelengths  optical communication