Frequency hopping ultra wideband inter-vehicle radar system using chirp waveforms

Abstract

In this paper we propose a inter-vehicle UWB ranging system using chirp waveforms instead of the conventional UWB-IR ranging system that uses modulated Gaussian pulses. In the proposed system, the transmitted signal consists of a linear combination of chirp signals with the same time duration but different frequency bands. It is assumed that the channel model of the inter-vehicle communication system is a two-path channel model. The proposed system and conventional UWB-IR ranging system is evaluated in such a two-path channel model. The proposed system achieves better performance.