Title :
Line-oriented spectrum evaluation for sensor SNR estimation
Author :
Breitenbach, Arvid
Author_Institution :
Lehrstuhl fur Elektrische Messtech., Tech. Univ. Munchen, Germany
fDate :
2/1/1998 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
