Simple, fast and accurate eight points amplitude estimation method of sinusoidal signals for DSP based instrumentation

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Published 2 April 2012 Published under licence by IOP Publishing Ltd
, , Citation D N Vizireanu and S V Halunga 2012 JINST 7 P04001 DOI 10.1088/1748-0221/7/04/P04001

1748-0221/7/04/P04001

Abstract

A simple, fast and accurate amplitude estimation algorithm of sinusoidal signals for DSP based instrumentation is proposed. It is shown that eight samples, used in two steps, are sufficient. A practical analytical formula for amplitude estimation is obtained. Numerical results are presented. Simulations have been performed when the sampled signal is affected by white Gaussian noise and when the samples are quantized on a given number of bits.

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10.1088/1748-0221/7/04/P04001