In order to enlarge the array aperture in the case of having determinate number of sensors,this paper utilizes a sparse symmetric array which allows the interelement spacing to exceed the quarter-wavelength upper limit.

Genetic algorithm and FFT for the synthesis of element weight coefficients in asymmetric thinned arrays;

Genetic algorithm (GA) is used for the synthesis of thinned arrays (whose elements are thinned from the uniform grid),which uses not only element spacings but also element excitation as variables,so it provides more degree of freedom to control the characters of thinned arrays.

This paper deals with the issues associated with applying space-time adaptive processing(STAP) techniques in airborne sparse array applications.

In this paper interpolation technique is used for processing the FIM(Fourier Integral Method) beamforming of equispaced linear sparse array.

This paper points out that a thinned array can be set with the density function of the Gaussian distribution,after the extending of covariance matrix the gain can be increased clearly.

So we can use thinned array to solve these problems.

On the basis of a thinned array and code division signals, the space time adaptive processing (STAP) on an airborne radar is investigated to carry out ground clutter suppression and moving target detection.

Theoretically the aliasing of sparse arrays could be discriminated by two signals with different frequencies, but it could not be eliminated completely in the presence of noise.