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	Automatic Calibration of Process Noise Matrix and Measurement Noise Covariance for Multi-GNSS Precise Point Positioning 期刊论文 OAI收割 MATHEMATICS, 2020, 卷号: 8, 期号: 4, 页码: 20 作者: Zhang, Xinggang; Li, Pan; Tu, Rui; Lu, Xiaochun; Ge, Maorong \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2020/09/01 EM-algorithm multi-GNSS PPP process noise observation covariance matrix extended Kalman filter machine learning
	Design and Application of a Small ROV Control System Based on ArduSub System 会议论文 OAI收割 Weihai, China, October 14-16, 2020 作者: Zhao YM(赵宇明); He Z(何震); Li GL(李格伦); Wang YB(王亚彪); Li ZG(李智刚) \| 收藏 \| 浏览/下载：43/0 \| 提交时间：2021/04/13 ArduSub, Pixhawk ROV Extended Kalman filter algorithm Double closed-loop PID
	Quasi-consistent fusion navigation algorithm for DSS 期刊论文 OAI收割 SCIENCE CHINA-INFORMATION SCIENCES, 2018, 卷号: 61, 期号: 1, 页码: 17 作者: Su, Qiya; Huang, Yi; Jiang, Yanguang; Fang, Haitao \| 收藏 \| 浏览/下载：30/0 \| 提交时间：2018/07/30 quasi-consistent extended Kalman filter (QCEKF) extended Kalman filter (EKF) fusion algorithm navigation distributed satellites system (DSS)
	A 3-axis simulator for spacecraft attitude control research (EI CONFERENCE) 会议论文 OAI收割 2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China 作者: Dai L. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 This article presents the details of a new 3-axis simulator for spacecraft attitude control research and simulation. The air bearing allows the test bed to rotate about three axes with tiny friction. The attitude determination system consists of three fibre optical gyros an inclinometer and a magnetometer. The actuator of the system consists of three reaction flywheels and four control moment gyros (CMG). Mathematical models of the sensors and actuators are given to help algorithm design. An extended Kalman filter was designed to provide attitude information for controller. Mathematical simulation results prove the attitude determination system can achieve high precision. A coulomb friction model of reaction wheels is given with experimental results. A friction compensation algorithm was developed to raise the pointing accuracy of the control system. The article also describes the details of the hardware structure. A PD stabilizing controller is implemented to test the validation of the whole control system at last. 2010 IEEE.