中国科学院机构知识库网格系统: 检索

Development and performance test of dynamic simulation system for X-ray pulsar navigation 期刊论文 OAI收割
acta physica sinica, 2017, 卷号: 66, 期号: 5
作者: Xu Neng; Sheng Li-Zhi; Zhang Da-Peng; Chen Chen; Zhao Bao-Sheng

收藏 | 浏览/下载：49/0 | 提交时间：2017/05/03

X-ray pulsar-based navigation dynamic experiment X-ray simulation source silicon drift detector

Crowd Simulation and Its Applications: Recent Advances 期刊论文 OAI收割
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2014, 卷号: 29, 期号: 5, 页码: 799
作者: Xu MingLiang; Jiang Hao; Jin XiaoGang; Deng Zhigang

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收藏 | 浏览/下载：5/0 | 提交时间：2023/12/04

SOCIAL FORCE MODEL PEDESTRIAN BEHAVIOR TRAFFIC SIMULATION NAVIGATION ANIMATION ENVIRONMENTS EVACUATION FLOW FIELDS crowd simulation emergency evacuation pedestrian crowd crowd formation traffic simulation swarm simulation

Simulation of number and distribution of Compass occultation events 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 8, 页码: 2522-2530
作者: Wang Xian-Yi; Sun Yue-Qiang; Bai Wei-Hua; Du Qi-Fei; Wang Dong-Wei

收藏 | 浏览/下载：26/0 | 提交时间：2014/04/30

Compass navigation system Low Earth Orbit Occultation Orbit parameters Simulation

Three-dimensional modeling of simulation scene in campus navigation system 期刊论文 OAI收割
Journal of Chemical and Pharmaceutical Research, 2013, 卷号: 5, 期号: 12, 页码: 103-107
作者: Qin LJ(秦丽娟); Li, Ying; Yao C(姚辰)

收藏 | 浏览/下载：30/0 | 提交时间：2014/05/14

Three-dimensional Modeling Campus navigation Simulation scene Texture

AUTONOMOUS INTEGRATED NAVIGATION USING X-RAY PULSARS AND ASTEROIDS 会议论文 OAI收割
63rd International Astronautical Congress 2012, IAC 2012, Naples, Italy, 2012
Yang Chengwei; Gao Dong; Zheng Jianhua

收藏 | 浏览/下载：41/0 | 提交时间：2014/04/30

To improve the navigation performance of the spacecraft during interplanetary cruise a novel integrated navigation system is proposed. For X-ray pulsar navigation (XNAV) is a hot and prospective research subject and the optical navigation using asteroids is practical in space engineering we designed an autonomous navigation system using one X-ray detector and one navigation camera. The measurement models of the XNAV based on the time difference of arrival and the optical navigation based on the images of asteroids are presented. To enhance practicality the X-ray pulsars and asteroids are observed by turns. The batch least square filter used by Deep Space I is adopted to estimate the system state. The numerical simulation results show that the integrated navigation is feasible on the interplanetary cruise orbit. Moreover compared with the XNAV and the optical navigation the integrated navigation system can provide higher navigation performance.

Application of adaptive UKF in initial alignment of MINS/GPS integrated navigation system (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者: Gao Q.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

In order to overcome the shortcomings of standard unscented Kalman filter (UKF) which are obviously influenced by the error of initial value and the model error of system adaptive UKF which is based on the adaptive principle is applied in initial alignment of the MINS/GPS integrated navigation system. Coarse alignment cannot be done by micro inertial measurement unit (MIMU) itself because of its low precision the method of using magnetometer to assist it with coarse alignment is presented. Simulation results show that the adaptive UKF can overcome the influences of initial values error and inaccurate system model and improve the convergence speed and alignment accuracy effectively. 2010 IEEE.

Real-time matching algorithm of navigation image based on corner detection (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者: Zhang T.

收藏 | 浏览/下载：58/0 | 提交时间：2013/03/25

In order to meet requirement of real-time and high accuracy in image matching aided navigation SSDA algorithm is used to match remote sensing image and template image coarsely a fast and effective algorithm of remote sensing image matching based on corner detection is put forward. With the combination of rough and fine match when the matching result is bigger than one to count absolute value sum of energy difference of characteristic point energy to realize fine match of remote sensing image and template image to locate the position of template image in remote sensing image accurately. Simulation experiment proves that the matching of a remote sensing image resolution of 1018*1530 and a template image resolution of 150*90 can be fulfilled within 2.392 second wavelet transform is used to acquire low frequency component to realize image compression to decrease calculation work and increase matching speed. Harris corner detection algorithm is used to detect corner of remote sensing image and template image and energy of every corner is calculated the algorithm is robust and effective real time image navigation can be achieved. 2009 SPIE.

Research on navigation method in 3d geographic information system for water conservancy projects of large basin 会议论文 OAI收割
2008 International Workshop on Education Technology and Training and 2008 International Workshop on Geoscience and Remote Sensing, ETT and GRS, Shanghai, China, 2009
Chen; Yan-Rui1; 2; 3; Wang; Tao1; Xi1; Bai; Xu4

收藏 | 浏览/下载：32/0 | 提交时间：2011/08/23

Geographic information systems - Geology - Information systems - Navigation - Navigation charts - Remote sensing - Rivers - Technical presentations - Virtual reality - Water management - 3D navigation - Application analysis - Basin simulation - Digital river - Geographic information - Geographical coordinates - GIS application - Implementation techniques - Navigation map - Navigation method - Navigation methods - Precision Agriculture - Programming framework - Real-time navigation - Simulation systems - Systems - Tarim river - Tarim River basin - Three-dimensional (3D) geographic information system - Water conservancy projects

A navigation simulation system of lunar rover 会议论文 OAI收割
IEEE International Conference on Networking, Sensing and Control, Sanya, China, April 6-8, 2008
作者: Liu J(刘霁); Wang YC(王越超); Zhou C(周船); Geng YF(耿沿锋); Cong Y(丛杨)

收藏 | 浏览/下载：41/0 | 提交时间：2012/06/06

kinematics model lunar rover rover-terrain interaction navigation simulation

Platform and steady kalman state observer design for intelligent vehicle based on visual guidance (EI CONFERENCE) 会议论文 OAI收割
2008 IEEE International Conference on Industrial Technology, IEEE ICIT 2008, April 21, 2008 - April 24, 2008, Chengdu, China
Rong-hui Z.; Rong-ben W.; Feng Y.; Hong-guang J.; Tao C.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

State observer design is one of key technologies in research field of intelligent vehicle. Experiment platform visual guidance intelligent vehicle JLUIV-5 is establishedby Jilin University Intelligent Vehicle Group firstly. The system structure and assistant navigation control system and different image identify algorithms to recognize preview path and stops for variable illuminations are introduced. The dynamic response equation of steering control system was got by system identification experiment. By combined with the preview kinematics model and two-degree steering dynamic model of vehicle the steering kalman filter mathematics model based on preview kinematics for intelligent vehicle was obtained. And observer is designed by applying steady Kalman filter theory. The simulation and experiment results carry out in Jilin University Nanling Campus and Culture Center of Jilin Province show that the image identify algorithms and steady Kalmanstate observer designed by the proposed method has good adaptability for time-varying and parameters uncertain it can satisfy intelligent vehicle trace the path reliably during outdoor experiment. 2008 IEEE.