Line-oriented spectrum evaluation for sensor SNR estimation

Author

Breitenbach, Arvid

Author_Institution

Lehrstuhl fur Elektrische Messtech., Tech. Univ. Munchen, Germany

Volume

47

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

256

Lastpage

259

Abstract

When the dynamic performance of sensors has to be evaluated, the signal-to-noise ratio (SNR) is a useful figure of merit. A method for estimating the SNR of an analog sensor is proposed by which the sensor is stimulated sinusoidally, and its output sampled. It is then subjected to a digital Fourier Transform (DFT), and the resulting spectrum analyzed to obtain the sensor´s SNR value. This line-oriented evaluation scheme provides detailed information on the sensor output. A low-noise experimental setup for coherently testing displacement sensors is also described

Keywords

discrete Fourier transforms; displacement control; displacement measurement; eddy currents; electric sensing devices; electron device noise; electronic equipment testing; spectral analysis; analog sensor; digital Fourier Transform; displacement actuator; displacement sensors; dynamic performance; eddy current sensor; line-oriented spectrum evaluation; sensor SNR estimation; spectrum analysis; Fourier transforms; Frequency; Low-frequency noise; Narrowband; Noise measurement; Phase noise; Quantization; Sensor phenomena and characterization; Signal processing; Signal to noise ratio;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.728829

Filename

728829