November 2020: Release of BIDO3.0
November 2010: Modified to
include the estimation of power-spectral densities; to enable huddle tests (the
power-spectral densities, magnitude-squared coherences and phase differences
are estimated if all sensors are assigned to an identical location); to enable
preprocessing (including elimination of the trend, application of tapers,
bandpass filtering, decimation and correction for differeces
in instrumental response); to enable the analysis of centered
three-station arrays with SPAC and H0; to enable the calculation of SN ratios
of the horizontal motion; to ensure compatibility with gnuplot
4.0 (formerly, the script output used to be intended for gnuplot
4.4); to include a user manual in the Web format. (BIDO 2.0)
November 2009: Added
synthetic demo data (in bundle with the main body of BIDO) for a four-station
array (one at the center plus three around a circle).
October 2009: Created a user manual
in the PDF format.
September 2009: Fixed a
bug, where spectral ratios were not calculated for centerless three-component
array data. Added a feature that stores standard output of the calculation
processes in a log file. Added a feature to calculate and plot H/V spectra (so
that the program could deal with data from a single three-component seismic
sensor). (BIDO 1.2.2)
August 2009: Added a feature to
plot waveforms under analysis (so that continuous waveform records, and their
portions used in the analysis, were illustrated with plus signs). Fixed an
issue, where legends of the analysis output were hidden behind plot lines.
(BIDO 1.2)
July 2009: Fixed an issue, where
data from two-sensor arrays could not be dealt with (the two-station SPAC and
H0 methods were made implementable). (BIDO 1.1)
June 2009: Release of the initial
version. (BIDO 1.0)