Chaotic signals for CW-ranging systems. A baseband system model for distance and bearing estimation

In this paper the application of chaotic signals in ranging systems is addressed. In a previous article (1996) the idea of using chaotic signals as ranging signals in continuous wave (CW) systems has been introduced and motivated. Possible benefits were also analysed. This paper describes realisation and signal processing problems in chaos based range and bearing estimation. All the signal processing is performed in the baseband. In order to do this an actuator/sensor pair is introduced, that matches the measurement channel to the baseband signal processing. The channel adaption of this actuator/sensor pair is a linear operation and thus allows signal processing based on the assumption of linear channel properties. An array of such sensors is formed in order to allow bearing estimation of the impinging signal.