捷联惯导结算程序，读取数据文件，东北天地理坐标系，最后给出位置速度和姿态-SINS settlement procedures, read data files, Northeast days geographic coordinate system, and finally gives position, velocity and attitude

基于四元数互补滤波的四轴飞行器姿态解算算法。包括四元数、互补滤波、姿态结算-Solver algorithm based on quaternion complementary filter axis spacecraft attitude. Including quaternion complementary filter, posture settlement