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 traditional interpolation methods are effective in dealing with data on regular nodes, but in practical, the sample points are often irregular, because of the error caused by various aspects, such as motion blur, data loss and other reasons, therefore irregular interpolation has very practical significance.