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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 Robust joint estimation for time delay and Doppler frequency shift based on generalised sigmoid cyclic cross-ambiguity function 期刊论文 IET RADAR SONAR AND NAVIGATION, 2017, 卷号: 11, 页码: 721-728 作者:  Yu, Ling;  Qiu, TianShuang;  Luan, ShengYang 收藏  |  浏览/下载：6/0  |  提交时间：2019/12/02 impulse noise  delay estimation  frequency estimation  cochannel interference  robust joint estimation method  time delay  Doppler frequency shift  generalised sigmoid cyclic cross-ambiguity function  tuneable sigmoid cyclic correlation  relative estimator  impulsive noise  co-channel interference  theoretical analysis   Robust dynamic decoupling control for permanent magnet spherical actuators based on extended state observer 期刊论文 IET CONTROL THEORY AND APPLICATIONS, 2017, 卷号: 11, 页码: 619-631 作者:  Liu, Jingmeng;  Deng, Huiyang;  Chen, Weihai;  Bai, Shaoping 收藏  |  浏览/下载：7/0  |  提交时间：2019/12/30 permanent magnets  magnetic actuators  multivariable systems  nonlinear control systems  random disturbances  model errors  ESO  external disturbances  internal dynamics  lumped disturbance  cross channel interference  disturbance rejection  multivariable nonlinear system  Lagrange-Euler formalism  PMSA  extended state observer  permanent magnet spherical actuators  robust dynamic decoupling control   TD-SCDMA系统动态信道分配技术研究 学位论文 2011, 2010 黄莹 收藏  |  浏览/下载：3/0  |  提交时间：2016/02/14 动态信道分配  遗传算法  交叉时隙干扰  Dynamic Channel Allocation  Genetic Algorithm  Cross-slot Interference   Nonstationary vibration signal analysis of hydroturbine via Chirplet transform 期刊论文 2010, 2010 Feng Zhipeng; Chu Fulei 收藏  |  浏览/下载：3/0 Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文 2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China Zhang D.; Wang F.; Zhang Y.; Zhang X.; Deng W.; Shulin E. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters  (b) fiber gratings  and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2  3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further  an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers  which are very attractive components for WDM systems because of their great flexibility in filter design[4  5]. Basically  an AWG is an optical spectrograph built in planar waveguide technique. Typically  AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently  a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication  low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs  however  show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper  a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK)  its package technology and environmental stability were also discussed. 2005 IEEE.