方位角
惯性导航系统
加速度计
控制理论(社会学)
旋转(数学)
帧(网络)
惯性参考系
计算机科学
惯性测量装置
参考坐标系
方案(数学)
算法
计算机视觉
数学
物理
光学
人工智能
数学分析
电信
控制(管理)
量子力学
操作系统
作者
Jiangnan Ye,Lei Wang,Hao Han,Zhi Zhan,Lin Yan
出处
期刊:Measurement
[Elsevier]
日期:2023-07-01
卷期号:216: 112893-112893
标识
DOI:10.1016/j.measurement.2023.112893
摘要
Rotation modulation technology can average out constant errors in fiber optic gyro (FOG) rotational inertial navigation system (RINS). As a result, angle random walk (ARW) of FOGs plays a significant role in the precision of initial alignment. Using different gyros as horizontal gyros gradually transitioned from theory to practical application with the advancement of design philosophy. The theoretical formula between azimuth alignment accuracy and random walk coefficients (RWCs) of two horizontal gyros is deduced in this paper. A completely new multiple rotations and stationary alignment scheme is suggested. A recursive least-squares filter with azimuth variation in body reference frame and accelerometer outputs in navigation frame as measurements is constructed. The efficiency of this method is demonstrated through simulation and experimentation. The findings demonstrate that using this formula and alignment scheme, azimuth alignment accuracy could be greatly increased, which can be improved by 10.85% compared to common continuous rotation alignment scheme.
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