cordic matlab simulation algorithm, For time-frequency analysis algorithm, Complex of three-point Gauss-lengend the Formula pi.

Calculate the multifractal trend fluctuation analysis, Complex of three-point Gauss-lengend the Formula pi, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter.

导航坐标系：东-北-天 载体坐标系：右-前-上 姿态角范围：-PI/2<=pitch<=PI/2, -PI<roll<=PI, -PI<yaw<=PI 注意程序中方位北偏西为正(Navigation coordinate system: East North day Carrier coordinate system: right - front - up)