An active sensing system probes the environment by transmitting a signal and processing the output of a receiver, which generally contains echoes from reflectors and boundaries, and also noise. Usually the transmission is pulsed, but here a continuous signal is investigated. Delay between the transmission of a pulse and the moment when it returns to the receiver determines the distance to a target. Using a continuous periodic signal in transmission leads immediately to ambiguities and demasking. The scheme under consideration here transmits a continuous signal generated by a driven chaotic dynamical system, in an effort to reduce ambiguity and to increase robustness against noise.

Problem presented by
Alan Fenwick (QinetiQ, Winfrith)

Study Group contributors
Alexander Balanov (Lancaster University)
Matthew Cartmell (Glasgow University)
Ralf Jacobs (Strathclyde University)
Natalia Janson (Lancaster University)
Domingo Salazar (Oxford University)
Robin Tucker (Lancaster University)
Graeme Wake (University of Canterbury, NZ)
Charles Wang (Lancaster University)
Marian Wiercigroch (Aberdeen University)
Ko-Choong Woo (Aberdeen University)
Xu Xu (Aberdeen University)