摘要
针对无陀螺捷联惯导系统解算载体角速度精度不高的系统瓶颈,提出了两种新的角速度解算方法。基于一种九加速度计配置方案,利用比力方程解算得到的角加速度项、角速度平方项和乘积项,构造了两种角速度的辅助算法。此法避免了由于积分导致误差积累的同时,也避免符号判断、数据开方的过程。仿真结果不仅表明了两种辅助算法的可行性,而且在解算精度方面也优于积分法和开方法。
To solve the problem of precision limitation of angular velocity calculation of gyro free strapdown inertial navigation system （GFSINS）, two new angular velocity solutions were put forward. Based on a nine-accelerometer configuration scheme, two angular velocity assistant algorithms were built using the angle acceleration term, the square term and product term of angular velocity obtained from specific force equation. The algorithms avoid error accumulation caused by integral and the process of symbol judgment and extraction. The simulation results show that the new solutions are feasible and superior to integral algorithm and extraction algorithm as for angular velocity calculation.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第4期35-38,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
无陀螺捷联惯导系统
角速度
辅助算法
积分法
开方法
加速度计
gyro free strapdown inertial navigation system
angular velocity
assistant algorithm
integral algorithm
extraction algorithm
accelerometer
