Research of GPS/DR vehicle integration based on wavelets filter

According to multi-resolution theory of wavelet, in order to filter, de-noise and to distill the character of signal effectively, The GPS/DR(Global Position System/dead Reckoning) signal was decomposed and constructed with the application of wavelet matching method. Without needing exact statistical model of noise, the data is fused in wavelet fields. The parameters and biases of sensors are adjusted and the navigation precision is improved. The device composed of Jupiter GPS and LR-46 piezoelectricity gyro was designed. The experiments were carried out and the results showed that processing the data in wavelet fields can obtain satisfying location precision.