中国科学院机构知识库网格系统: 检索

A Distributed and Parallel Accelerator Design for 3-D Acoustic Imaging on FPGA-Based Systems 期刊论文 OAI收割
IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, 2024, 卷号: 43, 期号: 5, 页码: 1401-1414
作者: Zhao, Dongdong; Mao, Weibo; Chen, Peng; Hu, Yingtian; Liang, Haoran

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收藏 | 浏览/下载：37/0 | 提交时间：2024/06/17

Imaging Sonar Array signal processing Ultra wideband technology Computer architecture Transducers Acoustic beams 3-D acoustic imaging algorithm-hardware co-designed distributed and parallel architecture fieldprogrammable gate array (FPGA)-based accelerator

Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes 期刊论文 OAI收割
Micromachines, 2018, 卷号: 9, 期号: 12, 页码: 9
作者: Zhou, S. J.; Xu, H. H.; Liu, M. L.; Liu, X. T.; Zhao, J.

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收藏 | 浏览/下载：23/0 | 提交时间：2019/09/17

flip-chip light-emitting diodes distributed Bragg reflector light output power external quantum efficiency quantum-well p-type leds performance wavelength contacts ito/dbr laser power fabrication Science & Technology - Other Topics Instruments & Instrumentation

Scientific and Technical Literature Retrieval Based on Cloud 会议论文 OAI收割
International Conference oInternational Conference on Advances in Management Engineering and Information Technology (AMEIT), Bangkok, THAILAND, 2015-06-28
作者: Chen, YJ; Wang F(王锋); Deng, H

收藏 | 浏览/下载：27/0 | 提交时间：2016/03/31

cloud computing distributed technology retrieval map/reduce

Study on image real-time interpretation based on particle filter (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者: Liu S.-J.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

In order to satisfy to the real-time requirement of image interpretation system in photoelectric measurement equipments a kind of hardware acceleration system with MIMD distributed multi-processor architecture based on SOPC technology is designed. The particle filter algorithm is proposed to process image interpretation for state estimation problem of nonlinear and non-Gaussian system. This algorithm does not involve conventional linearization transform and has approximated the posterior probability density by a set of discrete particles. Therefore the approximate optimum result is educed. It has a high accuracy and a rapid convergence. Experimental results show that the algorithm be adequate to real time accuracy and robustness meets the requirement of image interpretation and possesses practical significance for engineering applications. 2011 IEEE.

Aerospace reconnaissance distributed system design based on WES (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on e-Business and Information System Security, EBISS2010, May 22, 2010 - May 23, 2010, Wuhan, China
作者: Wang H.; Wang H.; Wang H.; Wang H.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

A distributed embedded system is designed based on WES(Windows Embedded Studio) which is used to improve the stability and reliability of the aerospace optoelectronic reconnaissance platform and enhance the visualization in the complicated natural environment. This system is combined with the component of distributed data communication the component of CCD image acquisition and transfers all of which are designed on the hardware of PM401 by WES. Then plying the EWF technology integrate the stable and reliable distributed system. At last using NHPP mathematic model analyze the stability and reliability of the system. The results show that the stability and the reliability of this distributed system works well up to 94.61%. 2010 IEEE.

Design of image interpretation and data-processing system based on SOPC (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
Wang Z.-Q.; Liu Z.-R.; Xie M.-J.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

In order to follow the development of image interpretation and data-processing system in photoelectric measurement equipments a kind of hardware acceleration system is designed where MIMD distributed multi-processor architecture is used with SOPC technology. System hardware is composed of FPGA SDRAM SRAM FLASH and PCI bridge chip. Four Nios II embedded processors are integrated in a single FPGA chip and communicate with each other by sharing memory. Experimental results indicate that the system meets the requirements of data-processing system in photoelectric measurement equipments and possesses practical significance for engineering applications. 2010 IEEE.

Multi-source remote sensing supported large scale fully distributed hydrological modelling of the tarim river basin in central asia 会议论文 OAI收割
Proceedings of SPIE - The International Society for Optical Engineering, Second International Conference on Earth Observation for Global Changes, Chengdu, China, 2009
Feng; Xianwei1; 2; Chen; Xi1; Willems; Patrick3; Liu; Tie3; Li; Lanhai1; Bao; Anming1; Huang; Yue1

收藏 | 浏览/下载：24/0 | 提交时间：2011/08/23

Remote sensing - Arid regions - Data processing - Developing countries - Geographic information systems - Hydraulic models - Information systems - Land use - Observatories - Rivers - Snow - Water supply - Watersheds - Arid and semiarid region - Central Asia - Digital elevation - Distributed hydrological model - Ground stations - Hot spot - Hydrological modeling - Hydrological modelling - Hydrological process - Input and outputs - Leaf Area Index - MIKE-SHE - Multi-source remote sensing - Multi-temporal remote sensing - Multisources - Potential applications - Precipitation intensity - Remote sensing data - Remote sensing technology - River basins - Semiarid area - Snow covers - Soil types - Spatial analysis - Spatial distribution - Tarim basin - Tarim River basin - Variable model

The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE) 会议论文 OAI收割
Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states
作者: Yan F.; Zhang X.-J.; Yan F.

收藏 | 浏览/下载：35/0 | 提交时间：2013/03/25

The wavefront coding technology is known as a system-level technology which can extend the depth of focus of optical system by innovative optical design and image restoration. This technology can control misfocus related aberrations including misfocus astigmatism and Petzval curvature temperature-related misfocus in digital imaging systems. It can also help optical system tolerate more residual error in optical manufacturing and alignment besides misfocus. The brief introduction of wavefront coding technology and the wavefront coded TMA system under research is presented respectively in part 1 and part 2. The "MTF similarity" is defined to describe the relationship among MTF at different position or different fields in the third part. It is also shown in this part that the MTF similarity of wavefront coded system is much higher than the normal system within a large range. In part 4 comparison between the origin system and the new system with wavefront coding technology is provided after multiple errors are introduced from which it can be observed that the system with wavefront coding technology can tolerate much bigger error than origin system. The error tolerance is re-distributed according to a new criterion based on MTF similarity. If the MTF similarity is less than a certain value it can be regarded that the system can tolerate the residual error. The new error tolerance is displayed and it is shown that the wavefront coding technology can also loosen the error distributing besides extended the depth of focus.

Electroabsorption-modulated dfb laser integrated.with dual-core spot-size converters 期刊论文 iSwitch采集
Journal of lightwave technology, 2007, 卷号: 25, 期号: 8, 页码: 2213-2218
作者: Hou, Lianping; Ren, Zhong; Yu, Siyuan; Zhu, Hongliang; Wang, Wei

收藏 | 浏览/下载：33/0 | 提交时间：2019/05/12

Distributed feedback laser diode (dfb ld) Dual-core technology Electroabsorption modulator (eam) Quantum-well intermixing (qwi) Selective area growth (sag) Spot-size converters (sscs)

a decentralized rbac model and its user-role administration 会议论文 OAI收割
ISCIT 2007 - 2007 International Symposium on Communications and Information Technologies, Sydney, Australia, 40832
Zhang Xiantao; Li Qi; Qing Sihan; Zhang Huanguo; Zhang Liqiang

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收藏 | 浏览/下载：21/0 | 提交时间：2011/06/29

Access control Communication Control systems Distributed computer systems Electronic commerce Information technology Management Software prototyping Technology