When two signals are sampled by nonuniform sampling,and the amplitude of one signal is above 10% smaller than that of the other,the weak signal cannot be detected from the mixed signal′s spectrum because of sampling′s fake-randomicity.

In this paper, the conception of nonuniform sampling of wave-number-limited fonctions in N-dimentional euclideen space is discussed Insert functions and insert formulas of N-dimentional periodical nonuniforms sampling are deduced sampling laws of N-dimentional periodical nonuniform sampling are prove

A method to evaluate the sampling uniformity is presented,it deals with the nonuniformly sampling data acquisition systems.

In order to reduce the computational quantity of the processing of the LFM signal in fractional Fourier domain and to meet the real-time request,a new nonuniformly sampling method is proposed.

Comparative analysis on rectangular non-uniform sampling algorithm and log-polar transformation algorithm of image;

New methods and simulation for detecting low amplitude signals by non-uniform sampling;

The non-uniform sampling in shift-invariant space;

The introduction of generalized potential temperature and tendency equation of generalized moist potential vorticity into the thermodynamic framework is based on the non-uniform saturation of real atmosphere.