北斗/罗兰C组合导航非线性滤波算法研究  

Nonlinear Filtering Algorithm of Compass/Loran-C Integrated Navigation System

作　　者：刘志国[1] 王仕成[1] 邓方林[1] 王琛[1] 

机构地区：[1]西安第二炮兵工程学院,陕西西安710025

出　　处：《航天控制》2009年第2期8-10,17,共4页Aerospace Control

基　　金：总装预研演示验证专项

摘　　要：北斗/罗兰C组合可以实现无源三维导航定位。建立了组合导航系统状态方程和量测方程,针对量测方程为非线性的情况,分别应用扩展卡尔曼滤波(EKF)和Unscented卡尔曼滤波(UKF),设计了滤波算法,仿真结果表明,采用UKF方法比EKF方法能改善定位效果,该方法已经成功应用在工程实践中。Compass/Loran-C can be integrated to realize passive three-dimensional navigation and orientation. The state equations and measurement equations of the integrated navigation system are established. Extended Kalman filter and unscented Kalman filter have been applied to the system under the condition of the measurement equations are nonlinear. The simulation results show that the efficiency can be improved by using UKF method. This method has been successfully applied to engineering project.

关 键 词：卫星导航 北斗系统 非线性滤波 UKF 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]