@Override
public void executeAlgorithm(List<ValidObservation> obs)
throws AlgorithmError, CancellationException {
assert newStarMessage != null;
periodAnalysisAlgorithm = new TSDcDft(obs,
DcDftAnalysisType.FREQUENCY_RANGE);
if (currLoFreq == null) {
// Get these default values only once per dataset. See also reset()
// which is called by newStarAtion().