航天器姿态控制PID控制仿真程序，加入干扰值。-PID control of spacecraft attitude control simulation program, by adding the value of interference.

惯性导航系统仿真算法程序，捷联惯导仿真程序，包含四元数更新，姿态角更新，速度位置更新等-Inertial navigation system simulation algorithm program, the strapdown inertial navigation simulation program, includes quaternion update, update attitude Angle, position update speed, etc