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Interferometry imaging technique for accurate deep-space probe positioning 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2017, 卷号: 60, 期号: 12, 页码: 2847-2854
作者:  
Zheng, Weimin;  Tong, Fengxian;  Zhang, Juan;  Liu, Lei;  Shu, Fengchun
  |  收藏  |  浏览/下载:40/0  |  提交时间:2019/04/08
Interferometry imaging technique for accurate deep-space probe positioning 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2017, 卷号: 60, 期号: 12, 页码: 2847-2854
作者:  
Zheng, Weimin;  Tong, Fengxian;  Zhang, Juan;  Liu, Lei;  Shu, Fengchun
  |  收藏  |  浏览/下载:43/0  |  提交时间:2019/05/23
A method to estimate the neutral atmospheric density near the ionospheric main peak of Mars 期刊论文  OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016, 卷号: 121, 期号: 4, 页码: 3464-3475
作者:  
Zou, Hong;  Ye, Yu Guang;  Wang, Jin Song;  Nielsen, Erling;  Cui, Jun
收藏  |  浏览/下载:26/0  |  提交时间:2016/10/27
Mars Express tracking and orbit determination trials with Chinese VLBI network 期刊论文  OAI收割
CHINESE SCIENCE BULLETIN, 2010, 卷号: 55, 期号: 32, 页码: 3654-3660
作者:  
Cao JianFeng;  Huang Yong;  Hu XiaoGong;  Ma MaoLi;  Zheng WeiMin
收藏  |  浏览/下载:75/3  |  提交时间:2011/06/29
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:25/0  |  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.  
Semi-physical simulation of an optoelectronic tracking servo system based on C MEX S functions (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
Juan C.; Junhong Z.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
To the design of an optoelectronic tracking servo system  we test the method [1  not only the reasonability of the control algorithm should be considered  2]. The simulation results verify the theoretical analysis. Because C MEX S function has the features of fast execute speed  but the cost and time as well. It is necessary to establish the simulation model for the system. Applying the C MEX S functions  independently generated program  we can build the every independent digital control modules in MATLAB/SIMULINK for the optoelectronic tracking servo system. In the paper  directly download to the hardwires  we apply the C MEX S function to the design of the practical optoelectronic tracking servo system. For the speed  we can design and debug the digital control modules in MATLAB/SIMULINK and then transform and download directly to DSP processor. 2010 IEEE.  position loop control and TV delay compensations  
天然水体重金属迁移转化模型研究及其在乐安河水质研究中的应用 学位论文  OAI收割
硕士, 北京: 中国科学院研究生院, 1992
邹国强
收藏  |  浏览/下载:52/0  |  提交时间:2011/09/19