中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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A Semi-supervised End-to-end Framework for Transportation Mode Detection by Using GPS-enabled Sensing Devices 期刊论文  OAI收割
IEEE Internet of Things Journal, 2021, 期号: 99, 页码: 1-1
作者:  
Zhishuai Li;  Gang Xiong;  Zebing Wei;  YIsheng Lv;  Noreen Anwar
  |  收藏  |  浏览/下载:42/0  |  提交时间:2022/04/08
Modular aircraft simulation platform based on simulink (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010, August 4, 2010 - August 7, 2010, Xi'an, China
Chen C.-Q.; Ji Y.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
Aircraft simulation platform is the most important supporting technology in the aircraft development process. This simulation platform can be used for validating the design of subsystem and also it provides the necessary data for the Aircraft design. Wind has great impact on the flight parameter. In order to accurately simulate the wind model and calculate the flight parameters  a simulation modeling method for flight parameter simulation platform under wind field environment is established. Firstly  the various sub-systems which affecting flight parameters are analyzed  some mathematical models of the flight parameter simulation platform is established. Secondly  the atmospheric wind field is studied to analyze the impact on its trajectory. Then the model is built in the Simulink toolbox in the Matlab which is based on the principles of hierarchy and modularity  using C MEX S-function for the complex kinetic equations. Finally  when the models have been established  encapsulating models for several subsystem and assembling them for the Aircraft simulation platform based on the unified interface. The simulation tests (including the performance test of a certain gliding Aircraft  the wind influence test of a certain uncontrolled aircraft) prove the simulation capability of the platform  and its calculating step can reach 1 ms. Comparing simulation with field test data of a certain uncontrolled aircraft  it shows that the relative deviation of range is 0.47%  the relative deviation of maximal altitude is 2.1%. Taking relevant standards as a reference standard  it is demonstrated the platform is reliable  meets the engineering accuracy requirements. 2010 IEEE.  
An electro-optical tracking method in target separation based on fuzzy clustering association rules (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Guo T.-J.; Gao H.-B.; Zhang S.-M.; Wu Y.-J.
收藏  |  浏览/下载:46/0  |  提交时间:2013/03/25
An effective tracking method is proposed to solve the problem that the electro-optical tracking system in Missile Range easily loses the real target during the target separation. Before target separation  the error correcting value of the theoretical trajectory is obtained by the theoretical trajectory correcting algorithm. In the phase of target separation  the theoretical trajectory of the target is corrected by the error correcting value firstly  and then the fuzzy clustering association algorithm is applied to calculate the similarity between the measuring data of the target from sensors and the corrected theoretical trajectory. The similarity helps to identify whether the measured data is from the real target or not. Experimental results show that the authenticity of the target can be determined effectively. The identified results can be used as the decision-making basis of the servo sub-system and TV trackers  which can improve the continuous tracking probability of the electro-optical tracking system in the target separation. 2010 IEEE.  
Study of high speed photography measuring instrument (EI CONFERENCE) 会议论文  OAI收割
27th International Congress on High-Speed Photography and Photonics, September 17, 2006 - September 22, 2006, Xi'an, China
Zhang Z.; Sun J.; Wu K.
收藏  |  浏览/下载:43/0  |  提交时间:2013/03/25
High speed photograph measuring instrument is mainly used to measure and track the exterior ballistics  which can measure the flying position of the missile in the initial phase and trajectory. A new high speed photograph measuring instrument is presented in this paper. High speed photography measuring system records the parameters of object real-time  and then acquires the flying position and trajectory data of the missile in the initial phase. The detection distance of high speed photography is more than 4.5km  and the least detection distance is 450m  under the condition of well-balanced angular velocity and angular acceleration  program pilot track error less than 5. This instrument also can measure and record the flying trail and trajectory parameters of plane  aero naval missile.  
Two-time scales inner solutions and motion of a geostrophic vortex 期刊论文  OAI收割
Scientia Sinica Series A-Mathematical Physical Astronomical & Technical Sciences, 1988, 卷号: 31, 期号: 7, 页码: 806-817
作者:  
Ling GC(凌国灿);  Ting L(丁汝)
收藏  |  浏览/下载:1178/68  |  提交时间:2009/08/03