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Program PSD_FOUR calculates the power spectral density of a time-domain variable and writes the result on file UTFIL.
|TRC_IPSD||Recreate track irregularities from a PSD-spectra|
Program PSD_FOUR reads data from INFIL, the PSD-spectra is generated by raise the Fourier transformation to the second power.
Input data are read in free format, valid separators between the input values are <space>, <comma>, <tab>, <equal sign> or <carriage return>. The commands can be written both in lower and upper case letters. The operation of the program is controlled by the commands described below; some of the commands also need arguments.
Following example: Master.psd_fourf can be used as input data file:
## ## Input data for program PSD_FOUR ## INFIL= ucat/cos_l5d2.sngl UTFIL= ucat/cos_l5d2.fpsd #