基于Daubechies小波变换在GPS信号处理中的应用

Application of Wavelet in GPS Signal Filtering

利用小波变换理论对带有噪声的GPS定位信号进行滤波,用多尺度分析特性对其信号进行轮廓和细节部分的逐步分解,将分解后的小波系数进行反变换可求出原始纯净信号。实验表明,Daubechies小波滤波器在对GPS信号滤波中达到满意效果。

Application of wavelet transform theory, as well as MRA theory, is put into filtering the noisy GPS signal, dividing the noisy signal into approximate and details step by step, and then the original signal can be computed by inverse-transformation of wavelet coefficients. The result demonstrates that the inner-circle wavelet processes filtering to full satisfaction.