北斗双星/SINS组合导航实时滤波方法  

A Method of Real-Time Filter in RDSS/SINS Integrity Navigation System

作　　者：扈光锋[1] 马小艳[1] 王艳东[1] 范跃祖[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,北京100083

出　　处：《弹箭与制导学报》2005年第2期39-41,44,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：在北斗双星/SINS组合导航系统中,通过将双星定位延迟时间Δt扩充为卡尔曼滤波器的一个状态,提出并实现了一种处理北斗双星定位延迟现象的滤波方法,该方法同时需要由双星前后两时刻给出的位置定位信息来推算载体的速度,进而得到系统的速度观测方程。仿真结果表明,应用该方法对北斗双星/SINS组合导航系统进行实时滤波,可以很好的提高水平位置的定位精度,为克服双星系统定位实时性差的缺点提供了一种思路。In RDSS/SINS Integrity Navigation System, a method is designed and implemented to deal with the positioning delay time of the RDSS (Radio Determination Satellite Services) through augmenting the delay time into the conventional KF (Kalman Filter) as a state. In this method, measurement equation of velocity is needed, which can be acquired by using the continuous positioning result of the RDSS. The simulation results show that the present method is effective to improve the precision of the system's position, and this provides a way to overcome the shortcomings that the RDSS can't position in real time.

关 键 词：SINS 滤波方法 北斗 组合导航系统 卡尔曼滤波器 双星定位 定位信息 延迟现象 延迟时间 观测方程 系统定位 定位精度 水平位置 仿真结果 实时性 速度 

分 类 号：TN967.2[电子电信—信号与信息处理] TN713[电子电信—信息与通信工程]