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激光陀螺最适合于构成捷联惯性导航系统 ,是当前捷联惯性导航系统的重要应用研究方向 ,其航姿算法精度对激光捷联惯性导航系统的精度影响很大。本文应用激光陀螺当前迭代周期内及前两个迭代周期内的角增量输出 ,并根据在一个迭代周期内对陀螺仪采样的次数 ,提出了三种新的航姿算法表达式 ,并分析了此算法在典型圆锥运动输入下的漂移误差。仿真结果表明与传统的旋转矢量法比较 ,该新算法具有较高的精度 ,为改进旋转矢量算法提供了一种新的思路。
Laser gyro is most suitable for the formation of strapdown inertial navigation system, which is an important applied research direction of strapdown inertial navigation system. The precision of attitude algorithm has a great influence on the accuracy of laser strapdown inertial navigation system. In this paper, the angular incremental output of the laser gyroscope in the current iteration period and the first two iteration periods is given. Based on the number of times the gyroscope is sampled in one iteration period, three new expression of navigation attitude algorithms are proposed and analyzed Drift error of this algorithm under typical coning motion input. The simulation results show that compared with the traditional rotation vector method, the new algorithm has higher accuracy and provides a new idea for improving the rotation vector algorithm.