Title :
Investigation of time-frequency analysis in GPR signal using HHT method
Author :
Gan Lu ; Yang Lei
Author_Institution :
Sch. of Electr. & Electron. Eng., Wuhan Polytech. Univ., Wuhan, China
Abstract :
The time-frequency analysis for GPR signal encounters two problems. The first one is because of the echo signal contains very high frequency component so the GPR system employs equivalent-time sampling, this will lead to that the frequency of received signal is not equal to the real signal. The second one is the non-linear and non-stationary feature of the GPR signal. In this paper, a method for time-frequency analysis based on HHT using in equivalent-time sampling GPR system is presented, and compared to the FFT and morlet wavelet on real GPR data sets. The experiment result proves the method an improvement in analysis.
Keywords :
ground penetrating radar; radar signal processing; FFT wavelet; GPR data sets; GPR signal; GPR system; HHT method; echo signal; equivalent time sampling; high frequency component; morlet wavelet; time-frequency analysis; Delays; Ground penetrating radar; Signal resolution; Time series analysis; Time-frequency analysis; Wavelet analysis; Wavelet transforms; GPR; HHT; Hilbert spectrum; time-frequency analysis;
Conference_Titel :
Network Infrastructure and Digital Content (IC-NIDC), 2014 4th IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4736-2
DOI :
10.1109/ICNIDC.2014.7000320
