Non-uniform to uniform grid conversion using least-squares splines
Journal
European Signal Processing Conference
Journal Volume
2015-March
Journal Issue
March
Date Issued
2000-03-31
Author(s)
Abstract
We propose a new technique to perform nonuniform to uniform grid conversion: first, interpolate using nonuniform splines, then project the resulting function onto a uniform spline space and finally, resample. We derive a closed form solution to the least-squares approximation problem. Our implementation is computationally exact and works for arbitrary sampling rates. We present examples that illustrate advantages of our projection technique over direct interpolation and resampling. The main benefit is the suppression of aliasing.
Type
conference paper