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

fYear

2007

fDate

May 30 2007-June 1 2007

Firstpage

2843

Lastpage

2847

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCA.2007.4376881

Filename

4376881