High resolution digital radar design using chaotic AM signals

Abstract

A digital chaotic radar scheme that can be used in bistatic configuration is proposed. The generation of the transmitted AM signal and all post-processing are performed digitally. The proposed methodology is simulated and then validated with an anechoic chamber test. Results indicate that chaotic AM signals have autocorrelation sidelobe levels below -20 dB. The methodology was evaluated at two bandwidths, 0.5 GHz and 1 GHz. In presence of interference, sidelobe levels of the matched filter stay below -15 dB for a SNR of 0 dB. The proposed methodology makes the use of chaotic signals in bistatic radar possible without the requirement of chaotic system synchronization.