New weighting method to synthesize a zero sidelobe correlation filter for burst signals

Abstract

AbstractThe detection of received radar signals uses Doppler filtering as the correlation process on the received echoes for many transmitted pulses in addition to the pulse compression process which is the correlation process in the range direction. Normal radar echoes become blips widened in the azimuth direction, but the Doppler filtering process is not the optimum process from the perspective of improving the signal‐to‐noise ratio. Furthermore, compression of the spread in the azimuth direction of the signal is demanded in order to detect the azimuth. In this paper, we show that the azimuth beam width compression process can be implemented by filtering which satisfies the maximum SNR based on the zero sidelobe constraint condition applied to pulse compression. In addition, we theoretically explain the weighting matrix derived by this design method and use simulations to compare with the pulse compression process of the characteristics of a zero sidelobe correlation function. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 90(10): 25– 35, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20373