中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共8条，第1-8条

帮助

条数/页：排序方式：
	From Persistent Identifiers to Digital Objects to Make Data Science More Efficient 期刊论文 OAI收割 Data Intelligence, 2019, 卷号: 1, 期号: 1, 页码: 6-20 作者: Peter Wittenburg \| 收藏 \| 浏览/下载：34/0 \| 提交时间：2021/04/30 Big Data Data Management Persistent Identifiers Digital Objects Data Infrastructure Data Intensive Science
	Digital Preservation Center of NSLC 会议论文 OAI收割 the 10th international conference on preservation of digital objects, lisboa ,portugal, 2013-09 作者: Wu ZX(吴振新) 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/12/31 Preservation Digital Objects iPRES International Conference
	Poster---Digital Preservation Center of NSLC 其他 OAI收割 2013-09-01 作者: Wu ZX(吴振新) 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/12/31 Preservation Digital Objects iPRES International Conference
	iPRES 2013国际会议参会总结报告研究报告 OAI收割 2013 作者: 吴振新收藏 \| 浏览/下载：79/0 \| 提交时间：2014/01/14 Preservation Digital Objects iPRES International Conference
	High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文 OAI收割 2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States 作者: Jin L.-X.; Zhang K.; Zhang K.; Zhang K.; Zhang K. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore According to this method a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.
	Station mode for attitude determination of small-multi-target with high speed (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010, November 7, 2010 - November 9, 2010, Henan, China 作者: Wang J.; Zhao L.; Li M. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 A key problem of attitude measurement of small-multi-target with high speed is how to decide the optimum of the CMOS stations. A multi-CMOS station mode is designed in this paper multiple CMOS videos were placed on two parallel sides in measurement system every two CMOS form an intersection viewing field multiple viewing field join to cover shooting range which can augment Effective Viewing Field(EVF) increase capture ratio of objects with high speed and measurement precision of small objects. When an object passes through the joint area it will be imaged separately on each CMOS focal plane. Multiple CMOS videos were triggered synchronously a sequence of image information was extracted the target attitude was confirmed by digital image processing technology. The merit of station mode is low cost large measurement scope extending freely and so on. 2010 IEEE.
	SDSS spectroscopy for blazars in the Fermi LAT bright AGN sample 期刊论文 OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2009, 卷号: 9, 期号: 11, 页码: 1192 作者: Chen ZhaoYu; Gu MinFeng; Fan ZhongHui; Cao XinWu \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2021/12/06 ACTIVE GALACTIC NUCLEI BL-LACERTAE OBJECTS BLACK-HOLE MASS EMISSION-LINE PROPERTIES DIGITAL SKY SURVEY RAY LOUD BLAZARS OBSERVATIONAL APPEARANCE STAR-FORMATION RADIO QUASARS SOURCE LIST galaxies: active galaxies: nuclei gamma rays: observations quasars: emission lines BL Lacertae objects: general
	Data preprocessing of the exterior field of vision assembling photogrammetric camera (EI CONFERENCE) 会议论文 OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China 作者: Li J.; Li J.; Li J.; Liu J.; Liu J. 收藏 \| 浏览/下载：81/0 \| 提交时间：2013/03/25 Transmit array photogrammetric camera can obtain image which is high geometric fidelity and high photogrammetric quality. However the single chip array CCD image sensor camera can't meet the need of measuring precision and photogrammetric covering area. In order to obtain large numbers of information and extensive photogrammetric covering area we must increase field of vision angle and improve photogrammetric covering area. And all these objects can be realized by exterior field of vision assembling photogrammetric camera. Two side work must be done before images which obtained by exterior field of vision assembling photogrammetric camera be used in photogrammetry. First all assembling camera focal plane need be converted to a benchmark coordinate focal plane to realize camera digital assembling. Second images must be re-sampled and processing. Because of coordinate conversion two images from different assembling cameras can be established function relation which a pixel of image from a camera is corresponding to a pixel of another image from different camera. But through this conversion some pixels maybe extrusion together and other pixels separate on an image area. So interpolation direction finding(IDF) is used to obtain these pixels and realize image re-sampling. In this paper the structure of exterior field of vision assembling photogrammetric camera is analyzed and the coordinate conversion method of exterior field of vision assembling photogrammetric camera and image gray re-sampling method also can be discussed. All the works are based to data pretreatment of exterior vision assembling photogrammetric camera.