An Efficient Technique for the Calculation of Velocity-Acceleration Periodograms

摘要

The Cooley-Tukey method for greatly reducing the number of computations required to evaluate a velocity periodogram has been extended to the evaluation of velocity-acceleration periodograms. For N data points, this method requires approximately a factor of 2/3 N fewer computations than would be required by straightforward evaluation of the periodogram. (Author)