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浏览/检索结果: 共13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 Enhancing MTInSAR Phase Unwrapping in Decorrelating Environments by Spatiotemporal Observation Optimization 期刊论文  OAI收割 IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2023, 卷号: 20, 页码: 4002505 作者:  Liang, Hongyu;  Zhang, Lei;  Li, Xin   |  收藏  |  浏览/下载：18/0  |  提交时间：2024/01/04 Coherence  Synthetic aperture radar  Image edge detection  Decorrelation  Radar polarimetry  Estimation  Windows  Minimum spanning tree (MST)  multitemporal interferometric synthetic aperture radar (MTInSAR)  phase unwrapping (PhU)  redundant network   Distributed Adaptive Output Consensus of Unknown Heterogeneous Non-Minimum Phase Multi-Agent Systems 期刊论文  OAI收割 IEEE/CAA Journal of Automatica Sinica, 2023, 卷号: 10, 期号: 4, 页码: 997-1008 作者:  Wenji Cao;  Lu Liu;  Gang Feng   |  收藏  |  浏览/下载：22/0  |  提交时间：2023/03/22 Adaptive pole placement control  heterogeneous multi-agent systems  leader-following output consensus  non-minimum phase   基于自适应浸入与不变里路的高超声速飞行器控制方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2015 作者:  刘振 收藏  |  浏览/下载：137/0  |  提交时间：2015/09/02 高超声速飞行器  自适应浸入与不变  抗饱和  输出反馈  非最小相位  Hypersonic vehicle  Adaptive immersion and invariance  Anti-saturation  Output feedback  Non-minimum phase   The ternary Ni-Al-Co embedded-atom-method potential for gamma/gamma ' Ni-based single-crystal superalloys: Construction and application 期刊论文  OAI收割 Chinese Physics B, 2014, 卷号: 23, 期号: 3 J. P. Du; C. Y. Wang; T. Yu 收藏  |  浏览/下载：21/0  |  提交时间：2014/07/03 interatomic interaction potential  embedded-atom method  Ni-based  single-crystal superalloys  misfit dislocation networks  point-defect properties  minimum energy  paths  elastic band method  molecular-dynamics  interatomic potentials  saddle-points  gamma'-phase  hcp metals  cobalt   Resolution Enhancement of Phase-Conjugating Lenses by Using Signal Processing Algorithms 期刊论文  OAI收割 IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2014, 卷号: 13, 页码: 511-514 作者:  Gu, Xiang;  Pelletti, Chiara;  Mittra, Raj;  Zhang, Yunhua 收藏  |  浏览/下载：17/0  |  提交时间：2014/07/14 Minimum Residual Power Search Method (MRPSM)  phase conjugation (PC)  signal processing  subwavelength resolution   飞行器纵向运动的性能极限及其飞行控制方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2012 作者:  卢頔 收藏  |  浏览/下载：101/0  |  提交时间：2015/09/02 纵向飞行控制  非最小相位  H2型性能极限  L1自适应控制  神经网络  Longitudinal Flight Control  Non-minimum Phase  H2 Performance Limitation  L1 Adaptive Control  Neural Network   Capability of the extended state observer for minimum phase plants with unknown orders and uncertain relative degrees (EI CONFERENCE) 会议论文  OAI收割 31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China Zhao C.; Yang X.; Xiong J.; Lin X. 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25 The observing capability of the active disturbance rejection control (ADRC) for the minimum phase plants with unknown orders and uncertain relative degrees is discussed in this paper. The frequency performance of the linear extended state observer (LESO) is analyzed. It is proved that ESO can estimate the required states at the designed speed in spite of a large range of uncertainties. Finally  the results are verified by simulations. 2012 Chinese Assoc of Automati.   Graph fitting test method for the interpolation error of Moire fringe (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:  Sun Y.;  Sun Y. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 In order to realize the fast test for the interpolation error  the graph fitting test method for the interpolation error of Moire fringe is put forward in this paper. Firstly  the triangular wave Moire fringe photoelectric signal of the encoder whose phase difference is 90 are sampled to get the Lissajous graph of the two signals. Secondly  the single wave represented by the founded subsection function is used to fit the practical Moire fringe Lissajous graph. Then  the fitting result is tested to verify whether it satisfies the accuracy requirement. Lastly  the founded subsection function instead of the practical wave function is used to calculate the interpolation error. Using the graph fitting method to sample the Moire fringe single of 15-bits photoelectric encoder to get the interpolation error curve  the tested maximum interpolation error is 70" and the minimum error is - 69". Comparing with the interpolation error which is received from traditional test method  the change trend of the interpolation error curve is similar  and peak-peak value is almost equality. The results of experiment indicate that: the equipment is convenient and the examination method is efficient and feasible. The measure speed is fast and the manifestation result is intuitionistic. The system can be used in the working field. The method can avoid the speed influence and realize the dynamic interpolation error measure  which is significant for the research of encoder's dynamic accuracy characteristics. 2009 IEEE.   Global output-feedback stabilization for a class of stochastic non-minimum-phase nonlinear systems 期刊论文  OAI收割 AUTOMATICA, 2008, 卷号: 44, 期号: 8, 页码: 1944-1957 作者:  Liu, Shu-Jun;  Jiang, Zhong-Ping;  Zhang, Ji-Feng   |  收藏  |  浏览/下载：16/0  |  提交时间：2018/07/30 stochastic nonlinear systems  integrator backstepping  stochastic input-to-state stability  non-minimum phase  output-feedback stabilization   Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE) 会议论文  OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China Yang W.; Jingxu Z. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 Large-aperture telescope can be used in surveying battlefield  researching landform  searching object  real-time monitoring  imaging  detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object  quantity  geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology  people require larger aperture in optics-electronic (OE) system. By increasing optical aperture  the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture  the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors  such as deadweight  deformation of heat  environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror  precision of the system is ensured. During the designing phase  one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope  the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture  small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope  the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing  then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high  precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper  various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply  which was operated by the Directed Energy Directorate of the Air Force Research Laboratory  Kirtland AFB  NM  USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.