SAR imaging using fully random bandlimited signals

A coherent ultrawideband (UWB) random noise synthetic aperture radar (SAR) has been developed and tested at the University of Nebraska. It has been experimentally shown that this type of radar is capable of extracting the phase and the amplitude of the backscattered signal, thus enabling us to create target profiles in the frequency domain. The use of fully random waveforms (bandlimited noise) as the transmit signal is analyzed. A UWB signal model is developed and radar signal processing is simulated to yield the statistical characteristics of image formation using stochastic waveforms. The influence of the UWB signal characteristics on the image quality is estimated and represented graphically.