Author/Authors :
Pavlikov, V.V. National Aerospace University named after N. Ye. Zhukovsky "Kharkiv Aviation Institute", Ukraine, Kharkiv, Ukraine , Nguyen Van, Kiem National Aerospace University named after N. Ye. Zhukovsky "Kharkiv Aviation Institute", Ukraine, Kharkiv, Ukraine , Tymoshchuk, O. M. Kyiv State Maritime Academy named after hetman Petro Konashevych-Sahaydachniy, Kyiv, Ukraine
Abstract :
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.
Keywords :
spatio-spectral sensitivity , ultra wideband signal processing , passive radar , aperture synthesis systems , multi-element antenna array
