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An iterative method for solving the dynamic response of railway vehicle-track coupled systems based on prediction of wheel-rail forces 期刊论文
ENGINEERING STRUCTURES, 2017, 卷号: 151, 页码: 297-311
作者:  Wang, Wei;  Zhang, Yahui;  Ouyang, Huajiang
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/09
Effects of residual motion compensation errors on the performance of airborne along-track interferometric sar 期刊论文
Frontiers of information technology & electronic engineering, 2016, 卷号: 17, 期号: 10, 页码: 1095-1106
作者:  Zhang, Hui;  Hong, Jun;  Qiu, Xiao-lan;  Li, Ji-chuan;  Li, Fang-fang
收藏  |  浏览/下载：42/0  |  提交时间：2019/05/09
Threshold Factor Track Classification Algorithm Based on Target Motion Model 会议论文
12th IEEE Int Conf Ubiquitous Intelligence & Comp/12th IEEE Int Conf Autonom & Trusted Comp/15th IEEE Int Conf Scalable Comp & Commun & Associated Workshops/IEEE Int Conf Cloud & Big Data Comp/IEEE Int Conf Internet People, Beijing, PEOPLES R CHINA, 2015-08-10
作者:  Wang, Xiang;  Chen, Shiyang;  Wang, Xiaocui;  Xu, Yang;  Zhang, Rong
收藏  |  浏览/下载：3/0  |  提交时间：2020/01/06
Research on Attitude Transformation and Amendment of High Orbit Spacecraft 会议论文
4th International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC), Harbin Inst Technol, Harbin, PEOPLES R CHINA, 2014-01-01
作者:  Qi Wei;  Xu Wei;  Ding Ran;  Chen Pei
收藏  |  浏览/下载：4/0  |  提交时间：2020/01/06
Reentry guidance based on feedback linearization (EI CONFERENCE) 会议论文
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
Li D.-W.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
This paper presents a new reentry guidance algorithm for RLV (Reusable Launching Vehicle). The algorithm consists of two integrated components: trajectory planning algorithm and tracking algorithm. The most striking feature of algorithm here lies in that both planning and tracking are executed directly in height-velocity space  which is different from the methodology of configuration of drag in traditional shuttle guidance. In the session of trajectory planning  all trajectory constraints can be expressed with upper bound and lower bound in height-velocity space  then a linear interpolation is carried to search the nominal trajectory satisfying the requirement of downrange and target constraints. Then the tracking algorithm uses feedback linearization method to track this nominal profile and meet all constraints. Another typical feature of this algorithm is the strategy of downrange extension using FPA (flight path angle) controller to fulfill the requirement of large downrange. Proper combination of planning-tracking algorithm and FPA controller can bring great flexibility and adaptability to reentry guidance. The algorithm is proved to be robust enough to accommodate the model error and noises in the dynamics. 2011 IEEE.  
Improvement of voiced-unvoiced classification in vocoders 期刊论文
2010, 2010
Dang Xiaoyan; Wei Xuan; Cui Huijuan; Tang Kun
收藏  |  浏览/下载：4/0
An azimuth Fourier transform for parallel-track bistatic SAR 期刊论文
2010, 2010
Li Feng; Li Shu; Zhao Yigong
收藏  |  浏览/下载：6/0
Research of error correction of LEO satellite orbit prediction for vehicle-borne tracking and position device (EI CONFERENCE) 会议论文
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhang P.-L.; Guo L.-H.; Wang J.-J.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
Vehicle-borne tracking and position device is used to track LEO satellite. Because of the absence of the target which might be caused by cloud or zenith blind zone  the forecasting data will be used to acquire the target. While orbit prediction has serious errors  the target is always missed. Meanwhile  in its application to the vehicle-borne tracking and position device  due to the base of instability in the tracking process  it will result in significant difference between predicting data and tracking data  so the target will be not tracked rapidly. We applied tracking data to predict satellite orbits by improving Laplace method  and then corrected the error between Predicted data and actual measured data by interpolation method of Lagrange which improves the accuracy of prediction values. The testing data shows the accuracy of predicted data ranging from 3' to 10" for both azimuth and elevation when extrapolated satellite orbit to 7 seconds time. 2010 IEEE.  
A Particle Swarm Optimization Heuristic for the Index Tacking Problem 会议论文
作者:  Zhu, Hanhong;  Chen, Yun;  Wang, Keshen
收藏  |  浏览/下载：3/0  |  提交时间：2019/08/22
Angular rate of test table based on high-speed non-contact measurement (EI CONFERENCE) 会议论文
9th International Conference on Electronic Measurement and Instruments, ICEMI 2009, August 16, 2009 - August 19, 2009, Beijing, China
Yang L.; Shen X.; Zhang N.; Yang Y.; Zhao Y.
收藏  |  浏览/下载：73/0  |  提交时间：2013/03/25
This article will introduces a high-speed non-contact method that can measures the angular rate of a test table though an objective perspective. This method adopts a collimator tube that can be measured as a target fixed to the test table  and the target corresponds to the angular position of the test table. In the process of the table rotating  the camera will to keep track of the objective at a high speed. Due to the high sampling frequency of the high-speed camera  instantaneous angular rate of test table can be measured. With pixel subdivision technology  its measuring accuracy can be up to 0.02 pixels. We use this methods measured a low-speed test table's angular rate and analyzed the data. The error analysis shows when the rate of the test table is 0.20/s  the accuracy of the method can achieve 0.0220%. 2009 IEEE.  

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