A system which only use accelerometers as the inertial measurement unit is called gyroscope free strap-down inertial navigation system(GFSINS).
无陀螺捷联惯导系统是只用加速度计作为惯性测量元件,直接安装在载体上的捷联惯导系统。
参考来源 - 加速度计/磁强计捷联惯导系统姿态解算方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
无陀螺捷联惯导系统就是惯性元件只用加速度计，而不用陀螺的惯导系统。
So-called GFSINS (gyroscope free strapdown inertial navigation system) is a kind of strapdown inertial navigation system with only accelerometers but no gyroscope.
实验仿真结果表明，与无陀螺捷联惯导系统相比，该组合导航系统的精度和容错性能显著提高。
Computer simulation results show that, the precision and fault tolerance of the integrated navigation system are improved greatly, compared with the pure GFSINS.
为了在无陀螺捷联惯导系统中应用旋转矢量算法，如何获得载体的相对角位移、并保证载体相对角位移的精度和更新频率是非常重要的问题。
It is very important to apply rotation vector algorithm to the GFSINS that how to attain the relative angular displacement and meet its precision and updating frequency.
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