1.【数】四元数;四元法
2.四,四个一组;四组物;四人一组
3.四张对折的一沓纸;对折两次的一张纸
1.a generalized complex number that contains four terms, one real and three imaginary, and is the sum of a real number and a vector
1.First, a variation-the error quaternion vector can be attained. The non-single question of the end attitude of the spacecraft can be solved.
首先导出了误差四元数矢量，从而解决了航天器姿态控制中最终姿态表示的非单值性问题；
2.W component of the Quaternion. Don't modify this directly unless you know quaternions inside out.
四元数的W组件。不要直接修改这个，除非你很了解四元数。
3.Returns the square of the length of a quaternion .
返回四元数的长度的平方。
4.Returns the length of a quaternion .
返回当前四元数的长度。
5.Returns the normalized form of the specified quaternion .
返回指定四元数的正规化形式。
6.Returns the length of the specified quaternion .
返回当前四元数的长度的平方。
7.Replaces the current quaternion with its exponential .
用当前四元数的幂替换此四元数。
8.Replaces the current quaternion with its natural logarithm.
用当前四元数的自然对数替换此四元数。
9.When optimizing synchro update of the quaternion, the quaternion differential equation is calculated by using minimum parametric method.
采用最小参数法求解四元数微分方程，优化了四元数实时更新算法。
10.In this paper, the quaternion is taken for positional parameters to control the attitude of a spacecraft.
以四元数作为定位参数对航天器进行姿态控制。