Title :
An application of the wavelet transform for the echo signal from a rotating object
Author :
Le-Tien ; Talhami, H. ; Nguyen, D.T. ; Martin, N.M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tasmania Univ., Hobart, Tas., Australia
Abstract :
The backscattering field from a rotating-moving object is a complex-modulated signal, where the overall scattered field from the object changes over time in both amplitude and phase. Consequently, the Doppler spectrum consists of a central Doppler spectral line caused by the motion and many additional Doppler shift spectral lines caused by the rotation of the object. This paper presents an application of wavelet analysis for the echo signal from a spinning rotor in the time-scale domain. A comparison was also made of the measured-data with the simulated-signal for two rotor speeds through the scalograms of the wavelet transform
Keywords :
Doppler effect; Doppler shift; backscatter; modulation; radar cross-sections; radar signal processing; rotors; signal resolution; spectral analysis; time-domain analysis; wavelet transforms; Doppler shift spectral lines; Doppler spectrum; amplitude; backscattering field; central Doppler spectral line; complex modulated signal; echo signal; measured data; multiresolution analysis; phase; radar systems; rotating object; rotor speeds; scalograms; scattered field; simulated signal; spinning rotor; time-scale domain; wavelet analysis; wavelet transform; Continuous wavelet transforms; Doppler radar; Frequency; Object detection; Radar scattering; Radar signal processing; Resonance; Signal analysis; Wavelet analysis; Wavelet transforms;
Conference_Titel :
TENCON '96. Proceedings., 1996 IEEE TENCON. Digital Signal Processing Applications
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-3679-8
DOI :
10.1109/TENCON.1996.608408
