一种基于小波的导弹静基座初始粗对准方法

Initial Coarse Alignment Technique Based on Wavelet for Missiles Application

目前战术导弹广泛采用捷联惯导系统,该系统在导弹发射前要经过初始对准,由于陀螺和加速度表的噪声很大,影响初始对准的精度,为减小噪声影响,文中将小波消噪理论应用到导弹捷联惯性制导系统的初始自对准中。研究显示,小波分解滤波可以显著减小惯性器件的噪声,利用经过消噪的信号进行初始对准,滤波器的收敛速度加快,在相同对准时间内精度有明显提高。

The strapdown inertial navigation system （SINS） in missiles need initial alignment before missile launching. The strong noises of gyros and accelerometers outputs reduce the alignment accuracy. For reducing the noises, the paper apply the wavelet denoises technique for the initial coarse alignment. The result show that wavelet can effetely reduce the output noises of inertial instruments and this alignment based on wavelet is faster than the common alignment to gain the same precision