进行逐步线性回归，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，考虑雨衰 阴影 和多径影响。- Stepwise linear regression, It comprises aircraft flight attitude control, such as slip angle, tilt angle, roll angle, pitch angle, Consider shadow rain attenuation and multipath effect.