New method for the spatio-spectral sensitivity domain filling and radiometric imaging with high resolution in aperture synthesis systems

The classical method for filling the spatio-spectral sensitivity (SSS) domain in the quasimonochromatic aperture synthesis system is considered. Ultrawideband signal processing is widely used nowadays so according to this fact, this method should be corrected. It is necessary to know the essentialness of transformation from temporal to spatial frequencies . The new method for filling the SSS domain and radiometric imaging with high resolution in aperture synthesis systems with sparsed antenna array is proposed. It is shown that instead of shifting the bases of the antennas can be replaced by widening of the range of operating frequencies of the system. The method describes for the one-dimensional SSS domain but without any specifics it can be generalized for the two-dimensional SSS domain. Examples of simulation of SSS domain, ambiguity function and radiometric imaging corresponding to each method are shown.