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Method of Harmonics and Interharmonics Measurement Based on All-Phase Spectrum Zoom and Correction 期刊论文
Power System Technology, 2016, 卷号: Vol.40 No.8, 页码: 2496-2502
作者:  Zou Peiyuan;  Huang Chun;  Jiang Hui;  Zhou Diehui
收藏  |  浏览/下载:5/0  |  提交时间:2019/12/31
峰值频率大相关-小残差的弦乐器校音方法 期刊论文
2014
唐骏; 刘虹
收藏  |  浏览/下载:118/0  |  提交时间:2016/05/17
Advances in Infrared Spectrum Zoom Imaging System Research 期刊论文
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 卷号: 34, 期号: 12, 页码: 3419-3423
作者:  Bai Yu;  Xing Ting-wen;  Jiang Ya-dong
收藏  |  浏览/下载:127/0  |  提交时间:2015/07/10
Identification and correction for a digital signal with close frequencies 期刊论文
Journal of Vibration and Shock, 2013, 卷号: Vol.32 No.2, 页码: 171-174,181
作者:  Huo, Bing-Yong;  Yi, Wei-Jian
收藏  |  浏览/下载:4/0  |  提交时间:2020/01/05
Applications of chirp z transform and multiple modulation zoom spectrum to pulse phase thermography inspection 期刊论文
NDT & E INTERNATIONAL, 2013, 卷号: 54, 页码: 1-8
作者:  Ma Shuohan;  Ma Qishuang;  Liu Xinbo
收藏  |  浏览/下载:3/0  |  提交时间:2020/01/06
The Application of the Complex Modulation Zoom-FFT based on Complex Analytical Bandpass Filter in Interhamonic Detection of Power System 期刊论文
PROGRESS IN POWER AND ELECTRICAL ENGINEERING, PTS 1 AND 2, 2012, 卷号: Vol.354-355, 页码: 1012-1015
作者:  Liu, YM;  Yang, HG;  Li, LF
收藏  |  浏览/下载:2/0  |  提交时间:2019/02/28
选带细化超声流量计试验分析 期刊论文
2010, 2010
伍昕; 刘岩; 何耀; 冯冠平; WU Xin; LIU Yan; HE Yao; FENG Guan-ping
收藏  |  浏览/下载:3/0
选带细化频谱分析在超声波流量测量中的应用 期刊论文
2010, 2010
伍昕; 刘岩; 何耀; 冯冠平; WU Xin; LIU Yan; HE Yao; FENG Guan-ping
收藏  |  浏览/下载:1/0
Athermal design of hybrid refractive/harmonic diffractive optical system for far-infrared multi-band (EI CONFERENCE) 会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
Liu Y.; Sun Q.; Lu Z.; Yue J.; Zhang H.; Zhu R.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
In order to get enough information about the target  avoid big chromatic aberration as a result of wide spectrum and the complexity of optical system and adapt different special environment temperature  a hybrid refractive/harmonic diffractive optical system in far-infrared multi-band is described in the paper. This diffractive optical system has been designed an athermalized multi-band imaging system with harmonic diffractive element in 15-50m spectrum  based on larger 1dispersion capability and particular thermal dispersive power of harmonic diffractive element. Then  at the temperature range from 0C to 40C  this design can simultaneously meet with all requirements of the imaging system in five harmonic wave bands  including15.8-16.2m  18.5-20m  23-25m  30.5-33.5m and 46-50m. In each harmonic wave band  the magnification changes as a function of wavelength  which creates image registration error. To compensate this shortcoming  a zoom optical system is designed with three lenses by means of optical two- component method. The design results show that the hybrid refractive/harmonic diffractive optical system can realize athermalized and achromatic design  and the zoom optical system makes half image height at 3.53mm in every harmonic wave band and still realizes aberration compensation action. In the five harmonic wave bands  each optical transfer function approaches the diffraction limit at ambient temperature range of 0C to 40C. Finally  the system realizes the requirements of portability  mini-type and ease for fabrication. 2009 SPIE.  


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