中国科学院机构知识库网格系统: 检索

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	Improving the Signal-to-Noise Ratio on Terahertz Compressive Imaging 会议论文 OAI收割 Fuzhou, Fujian, China, December 13-16, 2020 作者: Xing, Chungui; Qi F(祁峰); Guo SX(郭树旭) \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2022/04/23 Terahertz imaging compressive sensing signal-tonoise ratio improvement
	Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton 期刊论文 OAI收割 GEOSTANDARDS AND GEOANALYTICAL RESEARCH, 2018, 卷号: 42, 期号: 3, 页码: 379-394 作者: Xu, Lei; Yang, Jinhui; Ni, Qian; Yang, Yueheng; Hu, Zhaochu \| 收藏 \| 浏览/下载：52/0 \| 提交时间：2018/09/26 Sm-Nd isotopes LA-MC-ICP-MS signal improvement geological reference materials Sm-Nd isochron
	Technology of USB HOST applying in traffic controller based on ISP1161A (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China Haibo L.; Song K. 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/03/25 Control and management of the urban traffic signal is an problem that modern city has to face. The traffic signal controller makes a great contribution to the improvement of traffic status and the reduction of traffic jam. A traffic controller is designed using the technology of USB host based on ISP1161A. Universal serial bus is new interface bus architecture for PC which supports the PnP function Of PC peripheral equipments and has been widely used in computer and communicational devices. ISP1161A complies with the protocol of USB1.1 and is used as the core part of the system. As a new try the USB host technology is applied into the design of controller to implement the communication with PC. Configuration of scheme is carried out successfully. The USB host technology makes configuration of scheme and future update easier and more convenient. 2011 IEEE.
	Tunable Carrier Generation and Broadband Data Upconversion for RoF Systems Based on Stimulated Brillouin Scattering 期刊论文 OAI收割 ieee transactions on microwave theory and techniques, 2011, 卷号: 59, 期号: 9, 页码: 2350-2356 Li W; Zhu NH; Wang LX; Qi XQ; Xie L 收藏 \| 浏览/下载：67/0 \| 提交时间：2012/02/06 FIBER TRANSMISSION MODULATION SIGNAL RADIO AMPLIFICATION SUPPRESSION IMPROVEMENT
	Design of driving circuit for binocular CCD image system (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：42/0 \| 提交时间：2013/03/25 The paper designs a driving circuit of high sensitive wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance low power consumption and small volume the driving system can be applied to aeronautics and astronautics field. With a further improvement a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Non-contact and on-line cone diameter measuring based on high speed linear CCD (EI CONFERENCE) 会议论文 OAI收割 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China Guohui Z.; Jianhua W. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 The remarkable improvement of sensing and processing hardware performance makes the non-contact on-line high accuracy and high speed measuring possible by means of linear CCD. The goal of this pager is to describe the key questions on designing the cone diameter detecting system by linear CCD. This paper first describes the detecting scheme. In particular the factors affecting accuracy such as resolution voltage difference between neighbor pixels detecting rate and so on are analyzed and the quantitative estimation equations are provided. CCD takes on the photoelectric translation and measuring component double functions so the waveform of CCD output signal and the affecting factors merit deep discussion. On the basis of discussion several principles that can be used to improve the boundary recognition accuracy are presented.
	The improving speed post-processing technique for blocking artifact in transform coded images (EI CONFERENCE) 会议论文 OAI收割 Seventh IASTED International Conference on Signal and Image Processing, SIP 2005, August 15, 2005 - August 17, 2005, Honolulu, HI, United states 作者: Wang H.; He B.; Wang H.; Wang H.; Wang H. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 Based on the technique [1] and the gradient continuity of natural image an improving speed post-processing technique for the blocking artifact in transform coded image at low bit rate is presented. Moreover the detecting function is applied to extract the adjacent two blocks with the blocking artifact and is combined with the DCT-based adaptive post-processing technique [1] for reducing the blocking artifacts of the decoded image. The new technique is used to process JPEG compressed image and results show improvement in both effective DCT operation and peak-signal to noise ratio (PSNR) with preserving the image quality.
	Improved one-dimensional NMR detection of heteronuclear multiple quantum coherence involving the insensitive nucleus Se-77 as demonstrated by the compound C28H28O4Se4W2 期刊论文 OAI收割 MEASUREMENT SCIENCE & TECHNOLOGY, 1999, 卷号: 10, 期号: 3, 页码: 170-173 作者: Du, F; Liu, ML; Miao, XJ; Mao, XA; Song, LC 收藏 \| 浏览/下载：20/0 \| 提交时间：2015/12/01 NMR heteronuclear multiple quantum coherence (HMQC) spectroscopy one-dimensional detection chemical shift modulation signal-to-noise (S/N) improvement