| 摘要 |
A method and corresponding apparatus for determining the centroid (Vc) of a waveform signal being sampled at a set of parameter values (Vi, i=1, . . . , n) yielding a corresponding set of sampled amplitudes (Ai, i=1, . . . , n), each parameter value and corresponding amplitude forming a sampled point (Vi, Ai), the method including the steps of: selecting an amplitude at which to create an interpolated point; interpolating a first parameter value corresponding to the amplitude selected in the step of selecting an amplitude; and performing a centroid calculation using only the sampled points with an amplitude greater than a predetermined threshold. The waveform is sometimes sampled in the presence of background noise, and the method sometimes also includes: estimating the background (Bi) for each value in the set of parameter values at which sampling is performed; and reducing the amplitude (Ai) of each sampled amplitude by the background (Bi) so estimated.
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