Title :
Digital Signal Processing for A Level Measurement System Based on FMCW Radar
Author :
Chen, Hai ; Li, Yan ; Wang, Xin-Min
Author_Institution :
Northwestern Polytech. Univ., Xi´´an
fDate :
May 30 2007-June 1 2007
Abstract :
A level measurement system based on FMCW radar is developed. The structure of the measurement system is introduced. The methods of digital signal processing for the system are investigated. FFT algorithm is employed to process frequency difference in low-accuracy situation. When the signal-to-noise ratio is high, the high accuracy measurement is obtained by the AR spectral estimation. An autocorrelation filter is applied to the measurement system to reduce the disturbances. The resolution of the system which employs the methods of signal processing reaches 1 mm.
Keywords :
CW radar; FM radar; fast Fourier transforms; level measurement; signal processing; AR spectral estimation; FMCW radar; autocorrelation filter; digital signal processing; fast Fourier transform; frequency difference; level measurement system; signal-to-noise ratio; Autocorrelation; Digital signal processing; Filters; Frequency; Level measurement; Radar measurements; Radar signal processing; Signal processing algorithms; Signal resolution; Signal to noise ratio; AR spectral estimation; FFT algorithm; autocorrelation filter; level measurement;
Conference_Titel :
Control and Automation, 2007. ICCA 2007. IEEE International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-0818-4
Electronic_ISBN :
978-1-4244-0818-4
DOI :
10.1109/ICCA.2007.4376881
