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• OAI收割 [10]

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浏览/检索结果: 共10条，第1-10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 Electromagnetic propagation logging while drilling data acquisition method based on undersampling technology 期刊论文  OAI收割 JOURNAL OF GEOPHYSICS AND ENGINEERING, 2021, 卷号: 18, 期号: 5, 页码: 653-663 作者:  Li, Xinghan;  Zhang, Wenxiu;  Chen, Wenxuan;  Zhang, Yali;  Zheng, Jian   |  收藏  |  浏览/下载：25/0  |  提交时间：2022/07/04 electromagnetic propagation LWD  sampling technology  undersampling  digital phase sensitive detection  sampling frequency   生活垃圾焚烧厂周边大气二恶英类被动采样监测 学位论文  OAI收割 硕士, 北京: 中国科学院研究生院, 2014 张芹 收藏  |  浏览/下载：155/0  |  提交时间：2015/06/15 生活垃圾焚烧  二恶英  多氯联苯  大气  被动采样器  MSWI  PCDD/Fs  PCBs  Air  Passive sampling technology   A Novel Shallow Well Monitoring System for CCUS: With Application to Shengli Oilfield CO2-EOR Project 会议论文  OAI收割 Austin, TX, OCT 05-09, 2014 作者:  Li, Qi;  Liu, Xuehao;  Zhang, Jian;  Fang, Zhiming;  Liu, Guizhen   |  收藏  |  浏览/下载：26/0  |  提交时间：2018/06/05 CO2-EOR  Monitoring well  It-tuhe  Sampling technology  Baseline  Shengli oilfield  CCUS   A new digital backend in radio astronomy based on under-sampling technology 会议论文  OAI收割 5th International Conference on Machine Vision (ICMV) - Algorithms, Pattern Recognition and Basic Technologies, Wuhan, PEOPLES R CHINA, 2012-10-20 作者:  Dong L(董亮);  Wang M(汪敏);  Bai, ZY;  He, LS;  Dong L(董亮) 收藏  |  浏览/下载：23/0  |  提交时间：2016/04/08 digital backend  radio astronomy  under-sampling technology  ADCIntroduction   Noise processing technology of a TDICCD sensor (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 作者:  Zhang L.-P. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 In the application of TDI-CCD  the other is all kinds of interference noise produced in the working process of a TDI-CCD  for reset noise  because of its serious noise interference  such as reset noise and 1 / f noise  correlated double sampling is employed. The experimental results show that after noise processing  the imaging quality is reduced  etc. According to the features of noise  the output S/N has been raised to about 50 dB. 2010 IEEE.  so that it is necessary to study the noise characteristics of TDI-CCD. There are two categories of noise  this paper has studied the corresponding noise-processing technology. For dark current noise  one is the inherent noise  refrigeration is taken  including shot noise  dark current noise  fixed pattern noise and transfer noise etc.   A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文  OAI收割 6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China 作者:  Zhao Y.;  Zhang W. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However  the former has the disadvantage of weak intensity distribution controlling ability  and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized  and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE  light beam propagation distance  and the structure of the beam shaping unit  a method of determining the designing parameters is discussed. Using this method  several illumination modes are realized  and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last  and it is proven to be feasible. 2010 SPIE.   An 8-channel, area-efficient, low-power audio sampling rate converter (EI CONFERENCE) 会议论文  OAI收割 9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China 作者:  Liu Y.;  Liu Y.;  Liu Y.;  Wang D. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 A novel 8-channle  third  area-efficient  next a new Timing Division Multiplexer (TMD) scheme lowers clock working rate to minimum in order to save power  a novel memory addressing scheme reduces 20% data memory at least. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption  low-power audio sampling rate converter is proposed in this paper  so it is very suitable for consumer electronics. 2009 IEEE.  conversion ratio is 2:1 and 4:1. Filter design and implementation are the key points for the converter. First  excluded data and coefficients memories  adopting multiplier-free Arithmetic Unit (AU) and rounding methods allows its realization in a cell area of only 0.038mm 2 in 0.18 m technology   A multi-channel, area-efficient, audio sampling rate interpolator (EI CONFERENCE) 会议论文  OAI收割 2009 8th IEEE International Conference on ASIC, ASICON 2009, October 20, 2009 - October 23, 2009, Changsha, China 作者:  Wang D. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 The area and power consumption of sampled rate converter are governed largely by associated digital interpolationfilters. This paper presents a novel multi-channel  area-efficient audio sampling rate interpolator  whose conversion ratio is 1:2 and 1:4. Several architectural and implementation features reduces the complexity of the filter and allow its realization in a die area of 0.032mm2 in 0.18 m technology  meanwhile timing multiplexer scheme reduces clock frequency to minimum. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption  so it is very suitable for consumer electronics. 2009 IEEE.   Angular rate of test table based on high-speed non-contact measurement (EI CONFERENCE) 会议论文  OAI收割 9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China 作者:  Yang L.;  Zhao Y.;  Zhao Y.;  Zhao Y.;  Yang L. 收藏  |  浏览/下载：137/0  |  提交时间：2013/03/25 This article will introduces a high-speed non-contact method that can measures the angular rate of a test table though an objective perspective. This method adopts a collimator tube that can be measured as a target fixed to the test table  and the target corresponds to the angular position of the test table. In the process of the table rotating  the camera will to keep track of the objective at a high speed. Due to the high sampling frequency of the high-speed camera  instantaneous angular rate of test table can be measured. With pixel subdivision technology  its measuring accuracy can be up to 0.02 pixels. We use this methods measured a low-speed test table's angular rate and analyzed the data. The error analysis shows when the rate of the test table is 0.20/s  the accuracy of the method can achieve 0.0220%. 2009 IEEE.   A high accuracy image sensor for sinusoidal phase-modulating interferometry 期刊论文  OAI收割 optik, 2008, 卷号: 119, 期号: 7, 页码: 315, 320 Guotian He; Dailin Li; 王向朝; Jianmin Hu 收藏  |  浏览/下载：1267/189  |  提交时间：2009/09/18 image sensor  synchronization technology  sampling error  CCD  sinusoidal phase modulating