I have a sequence of (real) numbers that represent the magnitude of a certain natural event. I know that the samples are equispaced in time, but not the exact value of the spacings. So does that mean I do not know the sampling rate? And, how should I proceed on to doing a DFT on this dataset?
P.s. Let's say the dataset represents a historical record of the heights of high-tides on an unknown planet with one or more natural satellites. I know that the data points are equispaced, but I don't know the exact value of the spacing.