外文资料里面的源代码，包含飞行器飞行中的姿态控制，如侧滑角，倾斜角，滚转角，俯仰角，比较了软阈值，硬阈值及当今各种阈值计算方法。- Foreign materials inside the source code, It comprises aircraft flight attitude control, such as slip angle, tilt angle, roll angle, pitch angle, Comparison of soft threshold and hard threshold and today various threshold calculation method.