动基座条件下组合导航初始对准研究  

Research on Initial Alignment of Integrated Navigation System on Moving Base

作　　者：朱让剑[1] 战兴群[1] 秦峰[1] 

机构地区：[1]上海交通大学航空航天学院,上海200240

出　　处：《测控技术》2012年第8期38-42,共5页Measurement & Control Technology

基　　金：上海航天基金资助项目

摘　　要：初始对准是影响惯性导航系统的导航精度的重要因素,通过对惯性导航(INS)/全球定位系统(GPS)组合导航系统初始对准进行研究,利用GPS信息来辅助INS进行初始对准,来提升初始对准的精度和对准时间。在粗对准阶段,利用载机主惯导对子惯导进行装订,完成子惯导的粗对准;在精对准阶段,有效地利用GPS信息,采用速度匹配方式,并设计了组合对准滤波器,进行仿真验证。仿真结果表明:组合导航系统的初始对准能在15 s内完成对准,且能够达到7mrad的精度。Initial alignment of inertial navigation system is an important factor that can affects the inertial navigation accuracy.The GPS/INS integrated navigation system is used to study initial alignment in order to improve the accuracy and shorten the time.In the coarse phase of alignment,the master inertial system carried on board is used to transmit its information to slave inertial system.In precise phase of alignment,information of GPS is used effectively and use the mean of speed match,then the Kalman filter to fulfill the simulation is designed. The simulation results show that integrated navigation system can complete the alignment in 15 s,and also can reach accuracy of 7 mrad.

关 键 词：组合导航 初始对准 卡尔曼滤波 GPS INS 

分 类 号：TN967.2[电子电信—信号与信息处理]