Title :
A Simple and Effective Algorithm for Sinusoidal Frequency Estimation
Author :
Chao, Wu ; Yi, Zheng ; Jun-cheng, Wang ; Hui, Liu ; Qing-feng, Ma
Author_Institution :
Shandong Provincial Key Lab. of Ocean Environ. Monitoring Technol., Shandong Univ. of Sci. & Technol., Qingdao, China
Abstract :
Frequency estimation plays a very important position in underwater noise monitoring. The estimation method based on complex modulation (ZOOMFFT) can estimate the frequency with a sufficiently specified high sampling frequency within a narrow-band frequency signal spectrum. In this paper, the complex modulation principle is described, and its effectivity in reducing workload and improving accuracy is shown by simulation. By the complex modulation, down-sampling and FFT operating, the figure of simulation result is shown and then the validation of this method in improving the frequency estimation accuracy is done. It is easy to be implemented by microcontroller and can work for underwater noise analyze.
Keywords :
acoustic noise; fast Fourier transforms; frequency estimation; modulation; underwater acoustic communication; FFT operating; complex modulation principle; down-sampling; high sampling frequency; microcontroller; narrow-band frequency signal spectrum; sinusoidal frequency estimation; underwater noise monitoring; Finite impulse response filter; Frequency estimation; Frequency modulation; Low pass filters; Monitoring; FFT; ZOOMFFT; complex modulation; frequency estimation;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2012 International Conference on
Conference_Location :
Hunan
Print_ISBN :
978-1-4673-0458-0
DOI :
10.1109/CDCIEM.2012.23
