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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,北京100083
出 处:《弹箭与制导学报》2006年第1期35-38,共4页Journal of Projectiles,Rockets,Missiles and Guidance
摘 要:针对惯导/双星组合导航系统在战时易暴露目标的特点,提出了一种基于最小二乘滤波的分段滤波技术,并称之为分段最小二乘滤波。该滤波方案在IN S/双星组合导航系统中进行分时段滤波,其它时间为纯IN S解算。选择合理的滤波起始点及滤波时段的长短是分段滤波的关键技术。将分段最小二乘滤波应用到IN S/双星组合系统中进行仿真验证,仿真结果表明采用分段最小二乘滤波既能保证组合导航系统的导航精度又可以有效减小用户与中心站的通信时间,提高了IN S/双星组合导航系统的可靠性。In view of the fact that the target of inertial navigation system/double-star system (INS/DS) integrated navigation system is easy to expose in war, a segment filtering technology based on least square filtering (LSF), called segment least square filtering (SLSF), was developed. In the scheme, the filter works during the period of time when the INS/DS integrated navigation system is in work, and INS works solely in other time. It's the key issue for SLSF to choose the appropriate starting time of filtering and the length of filtering time. SLSF is applied to INS/ DS integrated navigation system. The simulation results show that SLSP can not only guarantee the navigation precision of INS/DS integrated navigation system, but also reduce the communication time between user and central station, thus improves the reliability of INS/DS integrated navigation system.
关 键 词:组合导航系统 惯导系统 双星系统 最小二乘滤波 分段滤波
分 类 号:V249.32[航空宇航科学与技术—飞行器设计]
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