Mainly taking some city of urban planning management information database designing and the establishment as an example to elaborate the functional design of this database, and lead stratified data into the corresponding database through warehousing.

Based on the combination of frequency-domain information and time-domain information of Time-frequency Analysis, the paper applies short-time Fourier transform and Wigner transform to Phased-array Ground Penetrating Radar (PGPR) stratified data, studies the influence of various methods, parameters and receiving units on time-frequency diagram and presents parameters suitable for delamination.

Threshold de-noising based on wavelet transform which is proposed to determine the decomposition order adaptively is an efficient method to reduce the white noise in the digital signal.

In this method,the determination of the threshold,the decomposition order and the threshold estimation model are three key problems that need to be solved.

In this paper,which is based on the analysis of the characteristic of noisy signal s wavelet transform,a self-adaptive method to determine a proper decomposition order is proposed according to the white noise verification based on self-correlation function.