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Low frequency noise study on short wavelength hgcdte photodiodes 期刊论文
Acta physica sinica, 2005, 卷号: 54, 期号: 5, 页码: 2261-2266
作者:  Huang, YC;  Liu, DF;  Liang, JS;  Gong, HM
收藏  |  浏览/下载：29/0  |  提交时间：2019/05/10
Characteristics of large low-frequency debris flow hazards and mitigation strategies 期刊论文
JOURNAL OF MOUNTAIN SCIENCE, 2005, 卷号: 2, 期号: 1, 页码: 50–58
作者:  Wang Shige
收藏  |  浏览/下载：21/0  |  提交时间：2013/08/15
Noise characteristic of laser diode pumped orange-yellow solid-state laser by intracavity sum-frequency of KTP Phase matching II (EI CONFERENCE) 会议论文
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
Tan H.; Gao L.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
Error analysis and test study of fiber optic gyroscope north-finder (EI CONFERENCE) 会议论文
Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China
Zhang Z.; Sun J.; Wu K.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
North-finder system is an important application of the inertial technology. It provides true north azimuth information to f all kinds of ground-based equipment. This paper designed a dynamic automatic north-finder based on the modulation output of fiber optic gyroscope (FOG). In this scheme  the sine output signal of the FOG was sampled and disposed  and then the real north of surveyed point on the surface of earth was calculated. The deviation caused by the base tilt was compensated by an accelerator. The output signals of FOG and accelerator were computed combined with the position sampled from increasing encoder by digital signal processor. Successive rotating technique was adopted to modulate the FOG signal periodically. Most of the low frequency part of random gyro drift errors was compensated. The north-finder accuracy was improved compared with the traditional static measuring method. The test result shows the FOG automatic north-finder obtains 2' true north angle accuracies within not more than three minutes  can meet the orientation need of artillery  terrain measurement vehicle  armored car  unmanned drive vehicle  geodetic survey and tunnel exploration.  
The advanced position compensation to improve the dynamic tracking ability for fast moving target in an optoelectronic tracking system (EI CONFERENCE) 会议论文
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Wu N.; Zhao L.; Zhou H.; Chen J.
收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25
The servo control system of the optoelectronic tracking equipment usually is a kind of SISO. When the fast moving target is tracked  the over-tune of the servo system is the main representation for the dynamic tracking error. As the result  the tracking ability may be improved by limiting the over-tune. We put forward a method  the advanced position compensation (called as APC in short)  which is to check the speed-overtune by applying the advanced position information. For the large accelerate target  small over-tune tracking is achieved  but it lowers the ability for tracking the sine signal at low frequency area. While the dynamic high-type can improve the tracking precision for the sine signal at low frequency area  we work out a brand-new method  which combines the advantages of the both. It increases the tracking precision in the whole frequency band at large scale for the optoelectronic tracking system. The simulation results show that when the target moves with the largest accelerate 120/s2  120/s  the maximum static tracking error is about 0.6.  
Microstructure dependence of the electrical properties of (Ba,Sr)TiO3 thin film deposited on (La,Sr)MnO3 conductive layer 期刊论文
JOURNAL OF CRYSTAL GROWTH, 2005, 卷号: 276, 期号: 3-4, 页码: 498
Miao, J; Cao, LX; Yuan, J; Chen, WR; Yang, H; Xu, B; Qu, XG; Zhao, BR
收藏  |  浏览/下载：20/0  |  提交时间：2013/09/18
Collective vibrational spectra of alpha- and gamma-glycine studied by terahertz and Raman spectroscopy 期刊论文
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 卷号: 38, 期号: 19, 页码: 3741
Shi, YL; Wang, L
收藏  |  浏览/下载：19/0  |  提交时间：2013/09/17
Numerical simulation of magnetic field for electromagnetic casting of hollow billets 期刊论文
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2005, 卷号: 27, 期号: 3, 页码: 325-328
作者:  Wang ZF(王哲锋);  Cui JZ(崔建忠);  Po FX(朴凤贤);  Wang ZY(王哲英);  Ma MX(马明旭)
收藏  |  浏览/下载：19/0  |  提交时间：2017/03/07
Characterstics of Large Low-frequency Debris Flow Hazards and Mitigation Strategies 期刊论文
Journal of Mountain Science, 2005, 卷号: 2, 期号: 1, 页码: 50-58
Shige Wang（王士革）
收藏  |  浏览/下载：20/0  |  提交时间：2010/11/22
Research and analysis of power system low frequency oscillation fault modes 会议论文
作者:  Zou, JF;  Liu, DC;  Zhang, C;  Liu, Y;  Pan, XJ
收藏  |  浏览/下载：1/0  |  提交时间：2019/12/05

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