gusucode.com > DSISoft是由加拿大地质调查局发布的用于垂直地震剖面(VSP)数据处理的免费软件包 > dsisoftv3/dsisoftv3/dsisoftv3/readme.txt
May 26, 1999
DSISoft Customized VSP Processing Software
Copyright (C) 1999 Seismology and Electromagnetic Section/
Continental Geosciences Division/Geological Survey of Canada
Thank you for downloading DSI customized VSP processing software. DSISoft is free software WITHOUT ANY WARRANTY that can be redistributed and/or modified under the terms of the GNU Library General Public License (see COPYING.lib for details). This software is designed to run on MATLAB 5.0 or higher. See the DSI homepage section on processing software/software development for information on how data should be organized into structured/cell variables to work with this software. What follows is a list of modules currently available. More detailed descriptions can be found by typing 'help' followed by the module name within MATLAB. Please contact us at dsi@cg.NRCan.gc.ca if you experience any dificulties or would like to provide feedback, request changes or contribute new modules to the package. As more modules are written, they will be posted on the web site.
PROCESSING MODULES
agc - automatic gain control
agcmem - automatic gain control (conserves memory at cost of speed)
asc2mat - converts ASCII files of seismic traces to DSI format
autocor - autocorrelation of each trace
azimuth - computes the receiver-to-shot azimuth
bandpass - linear bandpass filter
bison2mat - reads BISON data and converts to DSI format
b_rise - calculates rise time of first breaks
butw - butterworth bandpass filter (uses signal processing toolbox
dsi_start - prints software info and the data, starts timer
dsi_end - prints out time elapsed since 'dsi_start' was called
ener - energy balancing
equa - spectral equalization
findref3d - calculates points in 3 dimensions
fkfilt - apply f-k filter
flat - flattens the data according to pick times
flat2 - flattens the data according to times stored in a header word
handrot - rotates 2 components by a specified angle stored in a header word
hannband - Bandpass Finite Impulse Response filtering using a Hanning window
hannhigh - Highpass Finite Impulse Response filtering using a Hanning window
hannlow - Lowpass Finite Impulse Response filtering using a Hanning window
harmon - adaptive filter useful for removing electrical noise
harmon_new - adaptive filter useful for removing electrical noise with modified search algorithm
ibm2ieee - convert a matrix of IBM/360 32-bit floats to IEEE doubles
ita2mat - converts seismic data from ITA to DSI format
kill - flag bad traces
mat2asc - saves a DSI variable as ASCII files
mat2segy - saves a DSI variable in segy format
meanfilt - one dimensional mean filter
medi_filt - median filter
medirm - removes a downgoing wave using a median filter based on either first break pick times or velocity and shot static
merge_files - merges two DSI variables into one
mix - lateral trace mixing
mute - mutes data either before, after, or between specified time(s)
mute2 - mutes data according to a constant time value
noch - linear notch filter
pack_good - removes traces flagged by 'kill' from the dataset
pad - pads end of data with zeros
padbefore - pads beginning of data with zeros
preddecon - performs a predictive deconvolution on the data
profil - gives profile of a DSI variable
readascii - reads in an ascii file
resamp - resamples the data
rot3c - rotates 2 components to maximize energy on one by performing rotations in 1 degree increments
rot3c_eig - rotates 2 components to maximize energy on one using Eigenvalue method
rot_bal - balances amplitudes based on angle betweeen receiver-to-shot azimuth and horizontal component
rot_deg - rotates 2 components to examine energy reflected from a specific direction
rotcoord - rotate coordinate system by a given angle
s2r_geom - computes shot-to-receiver azimuth and shot-to-receiver offset
seg2mat - reads seg2 data and puts it into DSI format
segy2mat - reads segy data and puts it into DSI format
seisplot - plots seismic traces, called by most of the graphic interface modules
sft - shifts all traces by a specified time
sft - shifts data by a constant time
shft - shifts data according to a time stored in a trace header word
slicefmap - slice up a fold map
sortrec - sorts records and traces within records by any trace header word
sortrec_many - sorts records and traces within records by up to 7 trace header words
sortrec_new - sorts records and traces within records by any trace header word
stack - stack dataset
subr - subtracts one set of traces from another
subset - used for making a subset of data
thread - reads specified trace headers and saves contents in an ASCII file
thwrite - writes values stored in an ASCII file to specified trace headers
tred - performs time shifts according to wave velocity and shot-receiver offset to flatten first breaks (linear moveout correction)
trim - trim statics
tune_xcorr - cross-correlation based algorithm for tuning first break pick times
unflat - restores flattened data according to first break pick times
unflat2 - restores flattened data according to first break pick times
INTERACTIVE MODULES
aspec - shows plots of amplitude and phase vs. frequency
dispseis - display module for looking at seismic traces
fkpoly - plots the f-k spectrum of seismic traces and allows interactive picking of a polygon to be used for f-k filtering with options to look at filtered results of passing or rejecting contents of polygon
pick1comp - interactive first break picking on one component with options to tune, kill traces, and flatten according to pick times
pickfb - interactive first break picking simultaneously on 3 components with options to tune according to component with most energy, kill traces, flatten according to pick times, and rotate components on the fly
plothd - plots contents of trace headers in 2 or 3 dimensions as selected from a menu that identifies the significance of each trace header word