TOWARD A STANDARDIZED MULTI-SINEWAVE FIT ALGORITHM

Tomas Andersson, Peter Händel

Abstract

Multi-sinewave test methods require algorithms for multiple-tone parameter estimation. There exist a vast amount of imeko_proceedings on the topic. This paper presents a generalization of the IEEE four-parameter sinewave fit algorithm suitable to handle data comprising multiple sinewaves. The proposed method directly estimates the 3 <i>p</i> + 1 parameters of a <i>p</i>-tone model. The algorithm is analyzed numerically with emphasize on its convergence properties and statistical efficiency. The initialization of the algorithm is of major importance and an attempt to formulate a proper initialization procedure is presented.

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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