An algorithm to improve range estimation for frequency-modulation continuous-wave (FM-CW) radar level gauge

Author

Ren, Kaichun

Author_Institution

Dept. of Power Eng., Chongqing Commun. Inst., China

fYear

2004

fDate

21-25 June 2004

Firstpage

410

Lastpage

412

Abstract

In FM-CW radar level gauge, fast Fourier transform (FFT) is usually used to coarsely estimate the beat signal´s frequency. Algorithms for the frequency´s fine-estimation are also essential to improve range estimation. So, a method of estimating the beat signal´s frequency is proposed based on discrete Fourier transform (DFT) and interpolation. Simulation results show that the method is adaptive to noise and has high computational accuracy and small computation necessary, which makes it suitable for an online use of frequency-estimation.

Keywords

CW radar; FM radar; discrete Fourier transforms; distance measurement; frequency estimation; gauges; interpolation; microwave devices; DFT; FFT; FM-CW; beat signal frequency estimation; discrete Fourier transform; fast Fourier transform; frequency-modulation continuous-wave; interpolation; microwave radar level gauge; range estimation; Chirp modulation; Discrete Fourier transforms; Frequency estimation; Interpolation; Microwave generation; Radar antennas; Receiving antennas; Signal generators; Transmitters; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Acquisition, 2004. Proceedings. International Conference on

Print_ISBN

0-7803-8629-9

Type

conf

DOI

10.1109/ICIA.2004.1373401

Filename

1373401