Algorithm Design of Micro Inertial Strap-Down Heading and Attitude System

The base theory of micro-inertial strapdown head and attitude systems is expatiate on, and the calculating processes about the strapdown attitude matrix and the body head and attitude angle were discussed thoroughly，at the same time the method of refreshing strapdown matrix by using the quaternion was introduced emphatically. Finally, the result and its analysis about the simulation experiment are given, and the correctness and the validity are proved, some references for our researchers in this field are provided.