Home Reference Manuals Return Track Group Documentation
Program TRC_FOURPL calculates the Fourier series for the different track irregularities. The user can choose between three different types of spectra: real, imaginary and complex absolute value. The input data track should be written in format TRAC or TRAX.
Input data is 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.
| Arg(1)= | Type of signal, curve 1. |
| Arg(2)= | Mode of signal, curve 1. |
| Arg(3)= | Type of signal, curve 2. |
| Arg(4)= | Mode of signal, curve 2. |
| LIN | = | linear scale. |
| LOG10 | = | logarithmic scale, base 10. |
| VFREQ | = | angular frequency scale, 2*π/L. |
| VFLOG | = | logarithmic angular frequency scale. |
| LIN | = | linear scale. |
| LOG10 | = | logarithmic scale, base 10. |
Following example: Master.trc_fourf can be used as a master file:
##
## Input data file for program Trc_fourpl
##
IDENT1= A plot created in GENSYS by program TRC_FOURPL
IDENT2= The Fourier series of the track irregularities
IDENT3= INFIL ver_data/hysl_rak.trac
INFIL = $gentrc/K0_4a21-n-k.trac
XAXIS = VFLOG XMIN= 3. XSKALA= .076
YAXIS = LIN YMIN= 0. YSKALA= .5
ISCREN= 0
ILASER= 6 POSTFI= diags/trc_fourpl.ps
PAGE lat abs spv abs
PAGE vert abs rfh abs
PAGE lat real lat imag