一种新的光纤捷联罗经算法设计

光纤捷联罗经比较传统平台罗经具有维护性好、可靠性高等优点。不同于传统的平台罗经算法,设计了一种适合于光纤捷联罗经使用的捷联罗经算法。算法引入一种全新的惯性坐标系,并以重力在该坐标系的投影解算出地理坐标系的转动;陀螺输出解算载体坐标系的转动,进一步得到载体的姿态值。设计了利用FIR数字滤波器滤波获得惯性坐标系重力投影的方法。最后仿真验证了算法编排和理论分析的正确性。

A novel algorithm design for fiber strapdown gyrocompass

Compared with the traditional platform gyro compass,the fiber strapdown gyrocompass have advantages of well maintain and high reliability and so on.A strapdown gyrocompass algorithm that can be used in fiber strapdown gyrocompass system,which is different from the traditional platform compass algorithm is designed.The algorithm introduces a new inertial coordinate system,which the rotation of the geography coordinate systerm can be calculated by putting the gravity projection on,and the rotation of the carrier coordinate system can be calculated by using gyro outputs,the attitude of the carrier can be calculated.To get method of gravity projection of the inertial coordinate system using FIR digital filter.At last,simulation demonstrates that the algorithm and the theory are correct.