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目前远程武器系统广泛采用捷联惯性导航系统,该系统在发射前要经过初始对准。由于惯性导航系统中所采用的陀螺仪和加速度表的噪声很大,影响了初始对准,降低了打击精度,为减小噪声影响,提出了一种基于小波消噪理论的捷联惯性制导系统初始自对准方法。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。
At present, the long-range weapon system widely used strapdown inertial navigation system, the system before going through the initial alignment. Due to the high noise of the gyroscope and accelerometer used in the inertial navigation system, which affects the initial alignment and reduces the impact precision. To reduce the influence of noise, a strap-down inertial guidance system based on wavelet denoising theory Initial self-alignment method. The research shows that the wavelet decomposition filter can significantly reduce the noise of the inertial device. The initial alignment is performed by the de-noised signal. The convergence speed of the filter is faster and the precision is obviously improved in the same alignment time.