Example: calibrate program

0 This example uses the function normalize_gw() and avg_spec() to produce an animated display, showing the properly normalized power spectrum of the interferometer, with a 30-second characteristic time moving average. After compilation, to run the program type:
calibrate $\vert$ xmgr -pipe &
to get an animated display showing the calibrated power spectrum changing. An example of the output from calibrate is shown in Figure . Note that most of the execution time here is spent passing data down the pipe to xmgr and displaying it. The display can be speeded up by a factor of ten by binning the output values to reduce their number to a few hundred lines (the example program calibrate_binned.c implements this technique; it can be run by typing calibrate_binned | xmgr -pipe).

Figure: This shows a snapshot of the output from the program calibrate which displays an animated average power spectrum (Welch windowed, 30-second decay time).

Includes/calibrate.tex

Author: Bruce Allen, ballen@dirac.phys.uwm.edu

Comments: See comments for power_spectrum example program.