FM chaos UWB signal ranging technology based on delay line model
基于延时线模型的UWB混沌调频信号测距技术的研究

A new ranging technology based on delay lines model for frequency-modulated chaos ultra-wideband pulse(FMC-UWB)is proposed in this paper. The ranging Cramer-Rao bound(CRB)of this system is derived theoretically. The bound shows that the ranging accuracy is related to Signal-to-Noise Ratio(SNR), frequency modulation index and the center frequency of the carrier signal. The root mean square error(RMSE)performance and multi-user interference of this system is simulated and analyzed. Results show that the performance of this proposed system is more efficient than that of the traditional UWB radar detection system based on Gaussian pulse since the former possesses better capacity of anti-multi-user interference(MUI).