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• OAI收割 [9]
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• 期刊论文 [7]
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• Physics [1]
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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 Separating Scholte Wave and Body Wave in OBN Data Using Wave-Equation Migration 期刊论文  OAI收割 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2022, 卷号: 60, 页码: 13 作者:  Li, Chao;  Wang, Yuan;  Zhang, Jinhai;  Geng, Jianhua;  You, Qingyu   |  收藏  |  浏览/下载：58/0  |  提交时间：2022/07/18 Surface waves  Sea surface  Filtering  Imaging  Cutoff frequency  Background noise  Underwater vehicles  Body wave  demigration  migration  ocean bottom node (OBN)  Scholte wave  wavefield separation   An Adaptive Cutoff Frequency Selection Approach for Fast Fourier Transform Method and Its Application into Short-Term Traffic Flow Forecasting 期刊论文  OAI收割 ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION, 2020, 卷号: 9, 期号: 12, 页码: 23 作者:  Wang, Runjie;  Shi, Wenzhong;  Liu, Xianglei;  Li, Zhiyuan   |  收藏  |  浏览/下载：46/0  |  提交时间：2021/09/29 sequential data assimilation system  noises separation  fast Fourier transform method  cutoff frequency   XUV pulse effect on harmonic emission spectra and attosecond pulse generation 期刊论文  OAI收割 MODERN PHYSICS LETTERS B, 2017, 卷号: 31, 期号: 34 作者:  Feng, Liqiang;  Castle, R. S.;  Li, Yi   |  收藏  |  浏览/下载：29/0  |  提交时间：2019/06/20 High-order Harmonic Generation  Xuv Pulse  Harmonic Enhancement  Multi-harmonic Cutoff Extension  Frequency Modulation Of The Harmonics   Low Leakage Current and High-Cutoff Frequency AlGaN/GaN MOSHEMT Using Submicrometer-Footprint Thermal Oxidized TiO2/NiO as Gate Dielectric 期刊论文  OAI收割 IEEE ELECTRON DEVICE LETTERS, 2013, 卷号: 34, 期号: 6, 页码: 738-740 作者:  Zhang, YH(张耀辉) 收藏  |  浏览/下载：26/0  |  提交时间：2014/01/15 AlGaN/GaN  cutoff frequency  metal oxide semiconductor high electron mobility transistor (MOSHEMT)  thermal oxidized TiO2   Terahertz Frequency Response of Electrons in a Single-walled Zigzag Carbon Nanotube 期刊论文  OAI收割 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2012, 卷号: 60, 期号: 8, 页码: 1263-1266 Wang, C; Cao, JC 收藏  |  浏览/下载：92/0  |  提交时间：2013/04/22 Carbon nanotube  Terahertz  Mobility  Cutoff frequency   Power splitter based on photonic crystal waveguides with an air holes array 期刊论文  iSwitch采集 Optical engineering, 2011, 卷号: 50, 期号: 11, 页码: 4 作者:  Yu, Tianbao;  He, Lingjuan;  Deng, Xinhua;  Fang, Liguang;  Liu, Nianhua 收藏  |  浏览/下载：34/0  |  提交时间：2019/05/12 Photonic bandgap  Beam splitter  Cutoff frequency   Compensation of moire fringe sinusoidal deviation in photoelectrical encoder based on tunable filter (EI CONFERENCE) 会议论文  OAI收割 2011 Symposium on Photonics and Optoelectronics, SOPO 2011, May 16, 2011 - May 18, 2011, Wuhan, China 作者:  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 In order to improve the precision of the absolute photoelectrical encoder  a compensating method is put forward  which restrains the harmonics in moire fringe signal. After analyzing the relationship between the subdividing error and the sinusoidal index  a low-pass digital filter which can make the moire signal satisfy the need of 1024 subdivision is designed. Considering with the fundamental frequency varies with the rotating speed of encoder  the tunable filter is adopted  whose cutoff frequency is calculated according to the coarse information of the encoder. The simulating results show that the proposed method can improve the sinusoidal index  especially at high rotating speed. At last  the compensating algorithm is implemented in the terminal of satellite optical communication  which needs high resolution. The experimental results show indicate that the developed method is feasible. 2011 IEEE.   Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文  OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者:  Zhang Y. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors  -- filter based on high sampling rate was established  model and error characteristics were analyzed. With the hypothesis of constant acceleration  -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters  the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism  the frequency characteristics of angular velocity transfer function are analyzed  and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal  the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s  sampling period and parameters are 0.08ms and 0.01279 respectively  the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2)  the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism  -- filter can reduce noise effectively  and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.   MTF-based research on the minimum fill factor in optical sparse aperture system (EI CONFERENCE) 会议论文  OAI收割 2011 4th International Conference on Intelligent Computation Technology and Automation, ICICTA 2011, March 28, 2011 - March 29, 2011, Shenzhen, Guangdong, China 作者:  Liu Z. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 To avoid the loss of image information when it is transferred through optical sparse aperture system with excessively diluted apertures arrangement  we propose a method in the frequency domain termed characteristic triangle to calculate the minimum fill factor. This method is based on the characteristics of MTF and demonstrates that when the characteristic triangle is equilateral with each side 3th power of sub-MTF cutoff frequency  MTF has no zero value below cutoff frequency  thus we can obtain the minimum fill factor. Furthermore  we apply it to some typical sparse arrays  such as Golay3  Golay6  Ring6 and Tri-arm7  and get their fill factors of 33.33%  15.16%  30.11%  and 11.14% correspondingly  which are consistent with numerical results. 2011 IEEE.   A low power8th order elliptic low-pass filter for a CMMB tuner 期刊论文  OAI收割 journal of semiconductors, 2011, 卷号: 32, 期号: 9, 页码: 95002 Gong, Zheng; Chen, Bei; Hu, Xueqing; Shi, Yin; Dai, Fa Foster 收藏  |  浏览/下载：23/0  |  提交时间：2012/06/14 Bandpass filters  Cutoff frequency  Integrated circuits  Low pass filters  Operational amplifiers  Semiconducting silicon  Signal filtering and prediction  Tuners