Chaotic systems for simultaneous communications and bistatic radar

Chandra S. Pappu; Benjamin C. Flores

doi:10.1117/12.2558821

23 April 2020 Chaotic systems for simultaneous communications and bistatic radar

Proceedings Volume 11408, Radar Sensor Technology XXIV; 114080K (2020) https://doi.org/10.1117/12.2558821
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

Chaotic FM signals are an attractive choice for secure communications and bistatic radar imaging in a shared electromagnetic spectrum. In this work, we propose an approach that incorporates a system architecture with a chaotic system with three state variables, one of which is selected for transmission with an embedded audio message. The sum of the chaotic state variable and audio message feeds a voltage-controlled oscillator that generates a wideband FM signal useful for radar target imaging. Using a receiver equipped with a chaotic synchronization stage, we show that the message is effectively extracted if it is embedded in any of a family of FM signals generated via dissipative chaotic flows. Furthermore, our results suggest that this family of FM signals provides the bandwidth necessary to resolve target components in range and Doppler as determined by their bistatic radar ambiguity surface.

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Citation Download Citation

Chandra S. Pappu and Benjamin C. Flores "Chaotic systems for simultaneous communications and bistatic radar", Proc. SPIE 11408, Radar Sensor Technology XXIV, 114080K (23 April 2020); https://doi.org/10.1117/12.2558821

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