Application of pseudo-random equivalent sampling method in UWB-TWSR

Abstract

The main task of UWB-TWSR receiving system is to have echo signal for A/D convert and to the supply of back-end platform for processing, the TWSR signal bandwidth is usually from DC to GHz, moreover,it has periodicity, so equivalent time sampling can be used on the TWSR the signal digital-analog conversion. The implementation of equivalent hardware both in sequential equivalent sampling and random equivalent sampling has certain difficulty, pseudo-random equivalent sampling overcomes the shortcomings of the two foregoing equivalent sampling method, the advantage of this method is that random equivalent sampling data is not in chronological order according to sample and it is easier to obtain sample clock than sequential equivalent sampling, so it can reduce the requirements of the sampling clock. The application shows that the UWB Gaussian narrow pulse signal can be sampled and recovered by using equivalent sampling method.