The effects of phased-array antennas on the performance of radars utilizing pseudo-random noise coding

The authors examine how the phased-array antenna affects the radar´s performance when pseudo-random noise (PRN) coded waveforms are used. Issues of dispersion loss, compressed pulse shapes, and suppression of wideband sidelobes, or grating lobes are considered. Each of these three performance parameters and their interdependencies are considered for systems using PRN coded waveforms. It is shown that these performance characteristics are a function of signal bandwidth, subarray size, and antenna scan angle. In addition, the choice of filtering schemes in the receiver can impact the performance