中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	A Gyro-Aided Strapdown Triaxial Magnetometer Calibration Method Robust to Gyro Bias 期刊论文 OAI收割 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2021, 卷号: 70, 页码: 12 作者: Liu, Jihao; Li, Xihai; Zhang, Ying; Du, Aimin; Zeng, Xiaoniu \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2021/10/21 Geomagnetic vector field gyro bias magnetometer calibration relative attitude strapdown triaxial magnetometer (TAM)
	Dynamic coupling analysis and modeling for stabilized platform of rolling-pitching seeker (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者: Liu H.; Liu H.; Liu H. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 Missile's attitude change will be delivered to visual axis through stabilized platform during maneuvering flight and the missile vibration will be an interference source to visual axis stabilization. In order to solve this problem the coupling relationship between missile attitude and visual axis is obtained by Coordinate transformation. When the seeker stably tracks a target the angular velocity of visual axis in inertial space is zero so the relative angular velocity of roll axis and pitch axis can be derived for servo control. According to Oura dynamics equation the dynamic models of roll axis and pitch axis were established and kinetic equations of two axises were obtained. The dynamic models can provide theoretical basis to developing research of servo control system and structural optimization design of stabilized platform. Finally some measures could reduce the dynamic coupling between the framework was given. 2011 IEEE.
	The study of mapping relation of aeroplane complex motion and image movement and compensation technique (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China Wei Z.; Wang Y.-Y.; Xue W.-Q.; Dai M. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 In order to solve the problem of image blurring due to the image motion which results from the aircraft's motion attitude changes and the relative motion of the camera and aircraft firstly we install linear displacement transducer on the four shock absorbers. By analyzing the displacement values the geometrical relationship between the camera and the aircraft is acquired then relative motion amount between the object and the aircraft is obtained according to the motion and attitude changes. After that making use of geometrical relationship we can calculate the displacement variation of pixels within the camera exposure time. Thereafter taking consider variable motion and non-linear motion as uniform motion in a straight line at the moment of imaging then the model of the blurring image can be established according to the displacement variation of pixels within the camera exposure time and fuzzy point spread function in the two-dimensional movement is built. By using Wiener filtering method with the optimal window the image blurring is eliminated in aerial imaging system. Practice proved that this method can effectively eliminate the image blurring in the aerial imaging system. 2010 IEEE.
	Measuring system on 3-D pose of the remote revolving target based on intersection measurment and its precision analysis (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Li Q.-A.; Li X.-R.; Liang C.-P.; Qiao Y.-F. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 In this paper a method of measuring the 3-D pose of the remote revolving target such as rocket or missile by using the intersected measuring system with a proper algorithm is described. This passage creates a math model of intersected measuring system with dual - photoelectric theodolite and the formula to calculate the target attitude angles are presented.The measuring precision of this method is analyzed in detail by using the relative error theory and then it makes optimization design for structure parameters of intersected measuring system with dual - photoelectric theodolite by computer simulation so different optimization results according to different location of target are obtained and the system lay-out measuring principles are also presented. By using this method we may acquire the measuring precision higher than 0.5 if the measuring stations are arranged correctly.