Normperiod code
A Fortran code to obtain the spectrum of a time-series using the Least Squares Method (Lomb Periodogram). This code permits to analyze very short time-series without zero padding and non-equidistant or discontinuous time-series without prior interpolations or zero padding, and hence to avoid addition of noise or loss of information in case of fragmentation of time-series.
For citation and full documentation refer to:
Pytharouli and Stiros (2008) Spectral analysis of unevenly spaced or discontinuous data using the “normperiod” code, Computers and Structures, Volume 86, Issues 1-2, pages 192-196, doi:10.1016/j.compstruc.2007.02.022
Available software packages
Laboratory of Geodesy
and Geodetic Applications
