A novel method for chirp signal detection based on fractional Fourier transform

Qiufeng Shang; Wenyan He

doi:10.1117/12.806571

13 October 2008 A novel method for chirp signal detection based on fractional Fourier transform

Qiufeng Shang, Wenyan He

Proceedings Volume 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment; 71280R (2008) https://doi.org/10.1117/12.806571
Event: Seventh International Symposium on Instrumentation and Control Technology, 2008, Beijing, China

Abstract

A new method for chirp signal detection based on Fractional Fourier Transform (FRFT) is described in order to improve the performance of power line communication system. A character of chirp signal is that its energy can be concentrated properly when the fractional Fourier angle is suitable, but noise does not have this feature, signal mixed with noise can be separated in specific fractional Fourier domain, and then narrow-band filter is adopted for the signal obtained in the fractional Fourier domain, this character can be used for signal detection and then demodulation. Finally, simulation experiments indicate that the method is feasible and the capacity of the system's anti-noisy disturbance is improved.

Citation Download Citation

Qiufeng Shang and Wenyan He "A novel method for chirp signal detection based on fractional Fourier transform", Proc. SPIE 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment, 71280R (13 October 2008); https://doi.org/10.1117/12.806571

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