gstlal_reference_psd

#!/usr/bin/env python3
#
# Copyright (C) 2010  Kipp Cannon, Chad Hanna, Leo Singer
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
"""Estimate power spectra from LIGO frames or simulated h(t)."""
 

 
#
# parse command line
#
 
 
from optparse import OptionParser
 
from gstlal import datasource
from gstlal.psd import measure_psd, write_psd
 
 
def parse_command_line():
    parser = OptionParser(description = __doc__)
 
    # generic "source" options
    datasource.append_options(parser)
 
    # add our own options
    parser.add_option("--write-psd", metavar = "filename", help = "Write measured noise spectrum to this LIGO light-weight XML file (required).")
    parser.add_option("--sample-rate", metavar = "Hz", default = 16384, type = "int", help = "Sample rate at which to generate the PSD, default 16384 Hz")
    parser.add_option("--psd-fft-length", metavar = "s", default = 8, type = "int", help = "FFT length, default 8s")
    parser.add_option("-v", "--verbose", action = "store_true", help = "Be verbose (optional).")
 
    options, filenames = parser.parse_args()
 
    # check our own options
    if options.write_psd is None:
        raise ValueError("Must specify --write-psd")
 
    return options, filenames
 
 
#
# =============================================================================
#
#                                     Main
#
# =============================================================================
#
 
 
options, filenames = parse_command_line()
 
 
# parse the generic "source" options, check for inconsistencies is done inside
# the class init method
detectors = datasource.DataSourceInfo.from_optparse(options)
 
psds = {}
for instrument in detectors.channel_dict:
    psds[instrument] = measure_psd(
        detectors,
        instrument,
        options.sample_rate,
        psd_fft_length=options.psd_fft_length,
        verbose=options.verbose,
    )
 
write_psd(options.write_psd, psds, verbose=options.verbose)