基于地标导航的卫星姿态确定方法研究  

The Attitude Determination Method Research Based on Landmark Simulation

作　　者：徐春鹏[1] 宋华[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《微计算机信息》2012年第10期225-226,229,共3页Control & Automation

摘　　要：地标导航方法是通过星载光学摄像机实时拍摄的影像来计算运动物体的姿态参数,从而提供卫星姿态信息的。基于地标识别的结果,对单幅实时图像用最小二乘估计得到地标偏移量。仿真结果表明,当单幅图像识别出的地标点个数大于3个时,该方法能够准确有效地标定出系统的常值误差和随机误差。Landmark navigation calculates the real-time recording of moving objects pose parameters is via optical satellite images, providing satellite attitude information. Based on other results of landmark Identified, landmark offset is obtained from the single real- time images by using least squares estimation. Least squares estimation can not compensate for the offset in landmark issue with noise, so we use Extended Kalman Filter. Simulation results show that the method can accurately calibrate the system effectively con- stant and random errors,when a single image to identify the number of punctuation than 3.

关 键 词：地标导航 扩维卡尔曼滤波 姿态确定 

分 类 号：V249.329[航空宇航科学与技术—飞行器设计]