Title :
2-D HARMONIC RETRIEVAL IN MULTIPLICATIVE AND ADDITIVE NOISE BASED ON CHIRP Z-TRANSFORM
Author :
Yang, Shiyong ; Li, Hongwei ; Wu, Cheng ; Li, Zhiming
Author_Institution :
Sch. of Math. & Phys., China Univ. of Geosci., Wuhan
Abstract :
The two-dimensional (2-D) harmonic retrieval method in multiplicative and additive noise based on 2-D chirp z-transform (CZT) is discussed in this paper. Unlike 2-D FFT, the 2-D CZT can improve the spectral resolution without increasing the size of the observation data and fine the spectra of 2-D harmonics in multiplicative and additive noise. Hence, the resolution and accuracy of the 2-D harmonic retrieval method based on 2-D CZT are higher than that of based on 2-D FFT. Simulation results are provided to verify the effectiveness of the proposed method
Keywords :
Z transforms; harmonic analysis; multidimensional signal processing; noise; signal resolution; 2D harmonic retrieval; additive noise; chirp z-transform; multiplicative noise; spectral resolution; two-dimensional harmonic retrieval; Additive noise; Chirp; Frequency estimation; Geology; Harmonic analysis; Mathematics; Physics; Signal resolution; Statistics; Two dimensional displays;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.344473
