Estimation of Flow Parameters for the Needs of the Electromagnetic Measurement in Open Channels Based on a Concept of Inner Product Spaces

Electromagnetic flowmeters are said to be the best solution in many applications mainly because of the possibility of mean velocity measurement in the conditions of varying filling of the channel. Despite the relatively simple principals of operation the question of the signal processing method that can handle the flow parameter estimation in the noisy environment is still open. The estimators based on classical signal decomposition with the use of Euclidean inner product have high variance. The paper presents a quantitative assessment of a trial to modify the inner product in such a way that it would be "blind" to the existing disturbances.