From a2751086b42021384c8094e0192c1713c4b70786 Mon Sep 17 00:00:00 2001
From: Jan Thorbecke <janth@xs4all.nl>
Date: Tue, 31 Oct 2017 12:20:29 +0100
Subject: [PATCH] clean of old files
---
marchenko/marchenko.c.jan12_2017 | 1013 ------------------------------
1 file changed, 1013 deletions(-)
delete mode 100644 marchenko/marchenko.c.jan12_2017
diff --git a/marchenko/marchenko.c.jan12_2017 b/marchenko/marchenko.c.jan12_2017
deleted file mode 100644
index 634e5c3..0000000
--- a/marchenko/marchenko.c.jan12_2017
+++ /dev/null
@@ -1,1013 +0,0 @@
-#include "par.h"
-#include "segy.h"
-#include <time.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <assert.h>
-#include <genfft.h>
-
-int omp_get_max_threads(void);
-int omp_get_num_threads(void);
-void omp_set_num_threads(int num_threads);
-
-#ifndef MAX
-#define MAX(x,y) ((x) > (y) ? (x) : (y))
-#endif
-#ifndef MIN
-#define MIN(x,y) ((x) < (y) ? (x) : (y))
-#endif
-#define NINT(x) ((int)((x)>0.0?(x)+0.5:(x)-0.5))
-
-#ifndef COMPLEX
-typedef struct _complexStruct { /* complex number */
- float r,i;
-} complex;
-#endif/* complex */
-
-int readShotData(char *filename, float *xrcv, float *xsrc, float *zsrc, int *xnx, complex *cdata, int nw, int nw_low, int ngath, int nx, int nxm, int ntfft, int mode, float weight, int verbose);
-int readTinvData(char *filename, float *xrcv, float *xsrc, float *zsrc, int *xnx, complex *cdata, int nw, int nw_low, int ngath, int nx, int ntfft, int mode, float *maxval, float *G_d, int hw, int verbose);
-int writeDataIter(char *file_iter, float *data, segy *hdrs, int n1, int n2, float d2, float f2, int n2out, int Nsyn, float *xsyn, float *zsyn, int iter);
-void name_ext(char *filename, char *extension);
-
-void applyMute( float *data, float *muteW, int smooth, int above, int Nsyn, int nxs, int nts, float *xsrc, int *xrcvsyn, int nx, int shift);
-
-int getFileInfo(char *filename, int *n1, int *n2, int *ngath, float *d1, float *d2, float *f1, float *f2, float *xmin, float *xmax, float *sclsxgx, int *nxm);
-int readData(FILE *fp, float *data, segy *hdrs, int n1);
-int writeData(FILE *fp, float *data, segy *hdrs, int n1, int n2);
-int disp_fileinfo(char *file, int n1, int n2, float f1, float f2, float d1, float d2, segy *hdrs);
-double wallclock_time(void);
-
-void synthesis(complex *Refl, complex *Fop, float *iRN, int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int ntfft, int nw, int nw_low, int nw_high, int reci, int nshots, int verbose);
-
-void synthesisPosistions(int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int reci, int nshots, int *ixpossyn, int *npossyn, int verbose);
-
-/*********************** self documentation **********************/
-char *sdoc[] = {
-" ",
-" MARCHENKO - Iterative Green's functions retrieval in frequency domain",
-" ",
-" marchenko file_tinv= file_shot= nshots= [optional parameters]",
-" ",
-" Required parameters: ",
-" ",
-" file_tinv= ............... focusing operator(s)",
-" file_shot= ............... shot records with Reflection data",
-" ",
-" Optional parameters: ",
-" ",
-" INTEGRATION ",
-" tap=0 .................... lateral taper focusing(1), shot(2) or both(3)",
-" ntap=0 ................... number of taper points at boundaries",
-" fmin=0 ................... minimum frequency",
-" fmax=70 .................. maximum frequency",
-" MARCHENKO ITERATIONS ",
-" niter=10 ................. number of iterations",
-" MUTE WINDOW ",
-" above=0 .................. mute above(1), around(0) or below(-1) the first travel times of file_tinv",
-" shift=12 ................. number of points above(positive) / below(negative) travel time for mute",
-" hw=8 ..................... window in time samples to look for maximum in next trace",
-" smooth=5 ................. number of points to smooth mute with cosine window",
-" weight=1 ................. weight factor for summation of muted field with Tinv",
-" OUTPUT DEFINITION ",
-" file_green= .............. output file with full Green function(s)",
-" file_gplus= .............. output file with G+ ",
-" file_gmin= ............... output file with G- ",
-" file_f1plus= ............. output file with f1+ ",
-" file_f1min= .............. output file with f1- ",
-" file_pplus= .............. output file with p+ ",
-" file_f2= ................. output file with f2 (=p+) ",
-" file_pmin= ............... output file with p- ",
-" file_iter= ............... output file with N for each iteration",
-" verbose=0 ................ silent option; >0 displays info",
-" ",
-" ",
-" author : Jan Thorbecke : 2016 (j.w.thorbecke@tudelft.nl)",
-" ",
-NULL};
-/**************** end self doc ***********************************/
-
-int main (int argc, char **argv)
-{
- FILE *fp_syn, *fp_shot, *fp_out, *fp_f1plus, *fp_f1min;
- FILE *fp_gmin, *fp_gplus, *fp_f2, *fp_pmin;
- int i, j, k, l, ret, nshots, Nsyn, nt, nx, nts, nxs, more, ngath;
- int size, n1, n2, ntap, tap, di, ixrcv, ixsrc, ntraces;
- int nf, nw, nw_low, nw_high, nfreq, *xnx, *xnxsyn;
- int reci, mode, ixa, ixb, n2out, verbose, ntfft;
- int iter, niter, iw, tracf;
- int hw, smooth, above, shift, *ixpossyn, npossyn, ix;
- float fmin, fmax, df, *tapersh, *tapersy, fxf, dxf, fxs2, *xsrc, *xrcv, *zsyn, *zsrc, *xrcvsyn;
- double t0, t1, t2, t3, tsyn, tread, tfft;
- float *shotdata, d1, d2, f1, f2, fts, fxs, ft, fx, *xsyn, dxsrc;
- float *green, *pplus, *f2p, *pmin, *G_d, *muteW, dt, dx, dts, dxs, scl, mem;
- float *f1plus, *f1min, *iRN, *Ni, *trace, *Gmin, *Gplus;
- float max, scel, xmin, xmax, weight;
- complex *Refl, *Fop, *ctrace;
- char *file_tinv, *file_shot, *file_green, *file_iter;
- char *file_f1plus, *file_f1min, *file_gmin, *file_gplus, *file_f2, *file_pmin;
- char number[16], filename[1024];
- segy *hdrs, *hdrs_in, *hdrs_out;
-
- initargs(argc, argv);
- requestdoc(1);
-
- tsyn = tread = tfft = 0.0;
- t0 = wallclock_time();
-
- if (!getparstring("file_shot", &file_shot)) file_shot = NULL;
- if (!getparstring("file_tinv", &file_tinv)) file_tinv = NULL;
- if (!getparstring("file_f1plus", &file_f1plus)) file_f1plus = NULL;
- if (!getparstring("file_f1min", &file_f1min)) file_f1min = NULL;
- if (!getparstring("file_gplus", &file_gplus)) file_gplus = NULL;
- if (!getparstring("file_gmin", &file_gmin)) file_gmin = NULL;
- if (!getparstring("file_pplus", &file_f2)) file_f2 = NULL;
- if (!getparstring("file_f2", &file_f2)) file_f2 = NULL;
- if (!getparstring("file_pmin", &file_pmin)) file_pmin = NULL;
- if (!getparstring("file_iter", &file_iter)) file_iter = NULL;
- if (!getparint("verbose", &verbose)) verbose = 0;
- if (file_tinv == NULL && file_shot == NULL)
- verr("file_tinv and file_shot cannot be both input pipe");
- if (!getparstring("file_green", &file_green)) {
- if (verbose) vwarn("parameter file_green not found, assume pipe");
- file_green = NULL;
- }
- if (!getparfloat("fmin", &fmin)) fmin = 0.0;
- if (!getparfloat("fmax", &fmax)) fmax = 70.0;
- if (!getparint("ixa", &ixa)) ixa = 0;
- if (!getparint("ixb", &ixb)) ixb = ixa;
- if (!getparint("reci", &reci)) reci = 0;
- if (!getparfloat("weight", &weight)) weight = 1.0;
- if (!getparint("tap", &tap)) tap = 0;
- if (!getparint("ntap", &ntap)) ntap = 0;
-
- if(!getparint("niter", &niter)) niter = 10;
- if(!getparint("hw", &hw)) hw = 15;
- if(!getparint("smooth", &smooth)) smooth = 5;
- if(!getparint("above", &above)) above = 0;
- if(!getparint("shift", &shift)) shift=12;
-
- if (reci && ntap) vwarn("tapering influences the reciprocal result");
-
-/*================ Reading info about shot and initial operator sizes ================*/
-
- ngath = 0; /* setting ngath=0 scans all traces; n2 contains maximum traces/gather */
- ret = getFileInfo(file_tinv, &n1, &n2, &ngath, &d1, &d2, &f1, &f2, &xmin, &xmax, &scl, &ntraces);
- Nsyn = ngath;
- nxs = n2;
- nts = n1;
- dxs = d2; dts = d1;
- fxs = f2; fts = f1;
-
- ngath = 0; /* setting ngath=0 scans all traces; nx contains maximum traces/gather */
- ret = getFileInfo(file_shot, &nt, &nx, &ngath, &d1, &dx, &ft, &fx, &xmin, &xmax, &scl, &ntraces);
- nshots = ngath;
- assert (nxs >= nshots);
-
- if (!getparfloat("dt", &dt)) dt = d1;
-
- ntfft = optncr(MAX(nt, nts));
- nf = ntfft/2+1;
- df = 1.0/(ntfft*dt);
- nfreq = ntfft/2+1;
- nw_low = (int)MIN((fmin*ntfft*dt), nfreq-1);
- nw_low = MAX(nw_low, 1);
- nw_high = MIN((int)(fmax*ntfft*dt), nfreq-1);
- nw = nw_high - nw_low + 1;
- scl = 1.0/((float)ntfft);
-
-/*================ Allocating all data arrays ================*/
-
- Fop = (complex *)malloc(nxs*nw*Nsyn*sizeof(complex));
- xrcvsyn = (float *)calloc(Nsyn*nxs,sizeof(float));
- xsyn = (float *)malloc(Nsyn*sizeof(float));
- zsyn = (float *)malloc(Nsyn*sizeof(float));
- tapersy = (float *)malloc(nxs*sizeof(float));
- xnxsyn = (int *)calloc(Nsyn,sizeof(int));
- green = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- f2p = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- pmin = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- Gmin = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- Gplus = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- f1plus = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- f1min = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- iRN = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- Ni = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- ctrace = (complex *)malloc(ntfft*sizeof(complex));
- trace = (float *)malloc(ntfft*sizeof(float));
- muteW = (float *)calloc(Nsyn*nxs,sizeof(float));
- G_d = (float *)calloc(Nsyn*nxs*ntfft,sizeof(float));
- ixpossyn = (int *)malloc(nxs*sizeof(int));
-
- Refl = (complex *)malloc(nw*nx*nshots*sizeof(complex));
- tapersh = (float *)malloc(nx*sizeof(float));
- xsrc = (float *)calloc(nshots,sizeof(float));
- zsrc = (float *)calloc(nshots,sizeof(float));
- xrcv = (float *)calloc(nshots*nx,sizeof(float));
- xnx = (int *)calloc(nshots,sizeof(int));
-
-/*================ Read and define mute window based on focusing operator(s) ================*/
-/* Fop = p_0^+ = G_d (-t) ~ Tinv */
-
- mode=-1; /* apply complex conjugate to read in data */
- readTinvData(file_tinv, xrcvsyn, xsyn, zsyn, xnxsyn, Fop, nw, nw_low, Nsyn, nxs, ntfft,
- mode, muteW, G_d, hw, verbose);
- /* reading data added zero's to the number of time samples to be the same as ntfft */
- nts = ntfft;
-
- /* define tapers to taper edges of acquisition */
- if (tap == 1 || tap == 3) {
- for (j = 0; j < ntap; j++)
- tapersy[j] = (cos(PI*(j-ntap)/ntap)+1)/2.0;
- for (j = ntap; j < nxs-ntap; j++)
- tapersy[j] = 1.0;
- for (j = nxs-ntap; j < nxs; j++)
- tapersy[j] =(cos(PI*(j-(nxs-ntap))/ntap)+1)/2.0;
- }
- else {
- for (j = 0; j < nxs; j++) tapersy[j] = 1.0;
- }
- if (tap == 1 || tap == 3) {
- if (verbose) vmess("Taper for operator applied ntap=%d", ntap);
- for (l = 0; l < Nsyn; l++) {
- for (j = 1; j < nw; j++) {
- for (i = 0; i < nxs; i++) {
- Fop[l*nxs*nw+j*nxs+i].r *= tapersy[i];
- Fop[l*nxs*nw+j*nxs+i].i *= tapersy[i];
- }
- }
- }
- }
-
- /* check consistency of header values */
- if (xrcvsyn[0] != 0 || xrcvsyn[1] != 0 ) fxs = xrcvsyn[0];
- fxs2 = fxs + (float)(nxs-1)*dxs;
- dxf = (xrcvsyn[nxs-1] - xrcvsyn[0])/(float)(nxs-1);
- if (NINT(dxs*1e3) != NINT(fabs(dxf)*1e3)) {
- vmess("dx in hdr.d1 (%.3f) and hdr.gx (%.3f) not equal",d2, dxf);
- if (dxf != 0) dxs = fabs(dxf);
- vmess("dx in operator => %f", dxs);
- }
-
-/*================ Reading shot records ================*/
-
- mode=1;
- readShotData(file_shot, xrcv, xsrc, zsrc, xnx, Refl, nw, nw_low, ngath, nx, nx, ntfft,
- mode, weight, verbose);
-
- tapersh = (float *)malloc(nx*sizeof(float));
- if (tap == 2 || tap == 3) {
- for (j = 0; j < ntap; j++)
- tapersh[j] = (cos(PI*(j-ntap)/ntap)+1)/2.0;
- for (j = ntap; j < nx-ntap; j++)
- tapersh[j] = 1.0;
- for (j = nx-ntap; j < nx; j++)
- tapersh[j] =(cos(PI*(j-(nx-ntap))/ntap)+1)/2.0;
- }
- else {
- for (j = 0; j < nx; j++) tapersh[j] = 1.0;
- }
- if (tap == 2 || tap == 3) {
- if (verbose) vmess("Taper for shots applied ntap=%d", ntap);
- for (l = 0; l < nshots; l++) {
- for (j = 1; j < nw; j++) {
- for (i = 0; i < nx; i++) {
- Refl[l*nx*nw+j*nx+i].r *= tapersh[i];
- Refl[l*nx*nw+j*nx+i].i *= tapersh[i];
- }
- }
- }
- }
- free(tapersh);
-
- /* check consistency of header values */
- fxf = xsrc[0];
- if (nx > 1) dxf = (xrcv[0] - xrcv[nx-1])/(float)(nx-1);
- else dxf = d2;
- if (NINT(dx*1e3) != NINT(fabs(dxf)*1e3)) {
- vmess("dx in hdr.d1 (%.3f) and hdr.gx (%.3f) not equal",dx, dxf);
- if (dxf != 0) dx = fabs(dxf);
- else verr("gx hdrs not set");
- vmess("dx used => %f", dx);
- }
-
- dxsrc = (float)xsrc[1] - xsrc[0];
- if (dxsrc == 0) {
- vwarn("sx hdrs are not filled in!!");
- dxsrc = dx;
- }
-
-/*================ Check the size of the files ================*/
-
- if (NINT(dxsrc/dx)*dx != NINT(dxsrc)) {
- vwarn("source (%.2f) and receiver step (%.2f) don't match",dxsrc,dx);
- if (reci == 2) vwarn("step used from operator (%.2f) ",dxs);
- }
- di = NINT(dxf/dxs);
- if ((NINT(di*dxs) != NINT(dxf)) && verbose)
- vwarn("dx in receiver (%.2f) and operator (%.2f) don't match",dx,dxs);
- if (nt != nts)
- vmess("Time samples in shot (%d) and focusing operator (%d) are not equal",nt, nts);
- if (verbose) {
- vmess("Number of focusing operators = %d", Nsyn);
- vmess("Number of receivers in focusop = %d", nxs);
- vmess("number of shots = %d", nshots);
- vmess("number of receiver/shot = %d", nx);
- vmess("first model position = %.2f", fxs);
- vmess("last model position = %.2f", fxs2);
- vmess("first source position fxf = %.2f", fxf);
- vmess("source distance dxsrc = %.2f", dxsrc);
- vmess("last source position = %.2f", fxf+(nshots-1)*dxsrc);
- vmess("receiver distance dxf = %.2f", dxf);
- vmess("direction of increasing traces = %d", di);
- vmess("number of time samples (nt,nts) = %d (%d,%d)", ntfft, nt, nts);
- vmess("time sampling = %e ", dt);
- if (file_green != NULL) vmess("Green output file = %s ", file_green);
- if (file_gmin != NULL) vmess("Gmin output file = %s ", file_gmin);
- if (file_gplus != NULL) vmess("Gplus output file = %s ", file_gplus);
- if (file_pmin != NULL) vmess("Pmin output file = %s ", file_pmin);
- if (file_f2 != NULL) vmess("f2 (=pplus) output file = %s ", file_f2);
- if (file_f1min != NULL) vmess("f1min output file = %s ", file_f1min);
- if (file_f1plus != NULL)vmess("f1plus output file = %s ", file_f1plus);
- if (file_iter != NULL) vmess("Iterations output file = %s ", file_iter);
- }
- t1 = wallclock_time();
- tread = t1-t0;
-
-/*================ initializations ================*/
-
- if (ixa || ixb) n2out = ixa + ixb + 1;
- else if (reci) n2out = nxs;
- else n2out = nshots;
- mem = Nsyn*n2out*ntfft*sizeof(float)/1048576.0;
- if (verbose) {
- vmess("number of output traces = %d", n2out);
- vmess("number of output samples = %d", ntfft);
- vmess("Size of output data = %.1f Mb", mem);
- }
-
- /* dry-run of synthesis to get all x-positions calcalated by the integration */
- synthesisPosistions(nx, nt, nxs, nts, dt, xsyn, Nsyn, xrcv, xsrc, fxs2, fxs,
- dxs, dxsrc, dx, ixa, ixb, reci, nshots, ixpossyn, &npossyn, verbose);
- if (verbose) {
- vmess("synthesisPosistions: nshots=%d npossyn=%d", nshots, npossyn);
- }
-
-/*================ set variables for output data ================*/
-
- n1 = nts; n2 = n2out;
- f1 = ft; f2 = fxs+dxs*ixpossyn[0];
- d1 = dt;
- if (reci == 0) d2 = dxsrc;
- else if (reci == 1) d2 = dxs;
- else if (reci == 2) d2 = dx;
-
- hdrs_out = (segy *) calloc(n2,sizeof(segy));
- if (hdrs_out == NULL) verr("allocation for hdrs_out");
- size = nxs*nts;
-
- for (i = 0; i < n2; i++) {
- hdrs_out[i].ns = n1;
- hdrs_out[i].trid = 1;
- hdrs_out[i].dt = dt*1000000;
- hdrs_out[i].f1 = f1;
- hdrs_out[i].f2 = f2;
- hdrs_out[i].d1 = d1;
- hdrs_out[i].d2 = d2;
- hdrs_out[i].trwf = n2out;
- hdrs_out[i].scalco = -1000;
- hdrs_out[i].gx = NINT(1000*(f2+i*d2));
- hdrs_out[i].scalel = -1000;
- hdrs_out[i].tracl = i+1;
- }
-
-/*================ number of Marchenko iterations ================*/
-
- for (iter=0; iter<niter; iter++) {
-
- t2 = wallclock_time();
-
-/*================ construction of Ni(-t) = - \int R(x,t) Fop(t) ================*/
-
- synthesis(Refl, Fop, iRN, nx, nt, nxs, nts, dt, xsyn, Nsyn,
- xrcv, xsrc, fxs2, fxs, dxs, dxsrc, dx, ixa, ixb, ntfft, nw, nw_low, nw_high,
- reci, nshots, verbose);
-
- /* set Fop to zero, so new operator can be defined within ixpossyn points */
- memset(&Fop[0].r, 0, Nsyn*nxs*nw*2*sizeof(float));
-
- if (file_iter != NULL) {
- writeDataIter(file_iter, iRN, hdrs_out, ntfft, nxs, d2, f2, n2out, Nsyn, xsyn, zsyn, iter);
- }
- /* N_k(x,t) = -N_(k-1)(x,-t) */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- Ni[l*nxs*nts+i*nts+j] = -iRN[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- Ni[l*nxs*nts+i*nts+j] = -iRN[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
- /* initialization */
- if (iter==0) {
- /* N_0(t) = M_0(t) = -p0^-(x,-t) = -(R * T_d^inv)(-t) */
-
- /* p0^-(x,t) = iRN = (R * T_d^inv)(t) */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- pmin[l*nxs*nts+i*nts+j] = iRN[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- pmin[l*nxs*nts+i*nts+j] = iRN[l*nxs*nts+i*nts+j];
- }
- }
- }
-
- applyMute(Ni, muteW, smooth, above, Nsyn, nxs, nts, xsrc, ixpossyn, npossyn, shift);
-
- /* even iterations: => - f_1^-(-t) = windowed(iRN) */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- f1min[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f1min[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
-
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- //ix = NINT((xsrc[i]-fxs)/dxs);
- ix = ixpossyn[i];
- //fprintf(stderr,"i=%d xsrc=%f ix=%d ixpossyn=%d\n", i, xsrc[i], ix, ixpossyn[i]);
- f2p[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j] + Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f2p[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j] + Ni[l*nxs*nts+i*nts+j];
- }
- }
- }
- /* Pressure based scheme */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j=0;
- ix = ixpossyn[i];
- green[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j] + pmin[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- green[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts-j]+ pmin[l*nxs*nts+i*nts+j];
- }
- }
- }
- }
- else if (iter==1) {
- /* Ni(x,t) = -\int R(x,t) M_0(x,-t) dxdt*/
-
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- pmin[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- pmin[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
- applyMute(Ni, muteW, smooth, above, Nsyn, nxs, nts, xsrc, ixpossyn, npossyn, shift);
- /* Pressure based scheme */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j=0;
- green[l*nxs*nts+i*nts+j] = f2p[l*nxs*nts+i*nts+j] + pmin[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- green[l*nxs*nts+i*nts+j] = f2p[l*nxs*nts+i*nts+nts-j] + pmin[l*nxs*nts+i*nts+j];
- }
- }
- }
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- f2p[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f2p[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- }
- }
- }
- /* odd iterations: M_m^+ */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- ix = ixpossyn[i];
- f1plus[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j] + Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f1plus[l*nxs*nts+i*nts+j] = G_d[l*nxs*nts+ix*nts+j] + Ni[l*nxs*nts+i*nts+j];
- }
- }
- }
- }
- else {
- /* next iterations */
- /* N_k(x,t) = -N_(k-1)(x,-t) */
-
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- pmin[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- pmin[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
- applyMute(Ni, muteW, smooth, above, Nsyn, nxs, nts, xsrc, ixpossyn, npossyn, shift);
-
- /* compute full Green's function G = p^+(-t) + p^-(t) */
- if (iter == niter-1) {
- /* Pressure based scheme */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j=0;
- green[l*nxs*nts+i*nts+j] = f2p[l*nxs*nts+i*nts+j] + pmin[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- green[l*nxs*nts+i*nts+j] = f2p[l*nxs*nts+i*nts+nts-j] + pmin[l*nxs*nts+i*nts+j];
- }
- }
- }
- } /* end if for last iteration */
-
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- f2p[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f2p[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- }
- }
- }
-
-
- if (iter % 2 == 0) { /* even iterations: => - f_1^- (-t) = pmin(t) */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- f1min[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f1min[l*nxs*nts+i*nts+j] -= Ni[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
- }
- else {/* odd iterations: M_m^+ */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j = 0;
- f1plus[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- f1plus[l*nxs*nts+i*nts+j] += Ni[l*nxs*nts+i*nts+j];
- }
- }
- }
- }
-
- } /* end else (iter!=0) branch */
-
-
- t3 = wallclock_time();
- tsyn += t3 - t2;
-
- /* compute up and downgoing Green's function G^+,- G^+,+ */
- /* f1 based scheme */
- if (iter == niter-1) {
- /* transform f1+ to frequency domain */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- for (j = 0; j < nts; j++) {
- trace[j] = f1plus[l*nxs*nts+i*nts+j];
- }
- rc1fft(&trace[0],ctrace,ntfft,-1);
- ix = ixpossyn[i];
- for (iw=0; iw<nw; iw++) {
- Fop[l*nxs*nw+iw*nxs+ix].r = ctrace[nw_low+iw].r;
- Fop[l*nxs*nw+iw*nxs+ix].i = ctrace[nw_low+iw].i;
- }
- }
- }
-
- synthesis(Refl, Fop, iRN, nx, nt, nxs, nts, dt, xsyn, Nsyn,
- xrcv, xsrc, fxs2, fxs, dxs, dxsrc, dx, ixa, ixb, ntfft, nw, nw_low, nw_high,
- reci, nshots, verbose);
-
- /* compute upgoing Green's G^-,+ */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j=0;
- Gmin[l*nxs*nts+i*nts+j] = iRN[l*nxs*nts+i*nts+j] - f1min[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- Gmin[l*nxs*nts+i*nts+j] = iRN[l*nxs*nts+i*nts+j] - f1min[l*nxs*nts+i*nts+j];
- }
- }
- }
- /* Apply mute with window for Gmin */
- applyMute(Gmin, muteW, smooth, 1, Nsyn, nxs, nts, xsrc, ixpossyn, npossyn, shift);
-
- /* transform f1- to frequency domain */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- for (j = 0; j < nts; j++) {
- trace[j] = f1min[l*nxs*nts+i*nts+j];
- }
- rc1fft(&trace[0],ctrace,ntfft,-1);
- ix = ixpossyn[i];
- for (iw=0; iw<nw; iw++) {
- Fop[l*nxs*nw+iw*nxs+ix].r = ctrace[nw_low+iw].r;
- Fop[l*nxs*nw+iw*nxs+ix].i = -ctrace[nw_low+iw].i;
- }
- }
- }
-
- synthesis(Refl, Fop, iRN, nx, nt, nxs, nts, dt, xsyn, Nsyn,
- xrcv, xsrc, fxs2, fxs, dxs, dxsrc, dx, ixa, ixb, ntfft, nw, nw_low, nw_high,
- reci, nshots, verbose);
-
- /* compute downgoing Green's G^+,+ */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- j=0;
- Gplus[l*nxs*nts+i*nts+j] = -iRN[l*nxs*nts+i*nts+j] + f1plus[l*nxs*nts+i*nts+j];
- for (j = 1; j < nts; j++) {
- Gplus[l*nxs*nts+i*nts+j] = -iRN[l*nxs*nts+i*nts+j] + f1plus[l*nxs*nts+i*nts+nts-j];
- }
- }
- }
- } /* end if for last iteration */
-
- /* transform muted Ni to frequency domain */
- for (l = 0; l < Nsyn; l++) {
- for (i = 0; i < npossyn; i++) {
- rc1fft(&Ni[l*nxs*nts+i*nts],ctrace,ntfft,-1);
- ix = ixpossyn[i];
- for (iw=0; iw<nw; iw++) {
- Fop[l*nxs*nw+iw*nxs+ix].r = ctrace[nw_low+iw].r;
- Fop[l*nxs*nw+iw*nxs+ix].i = ctrace[nw_low+iw].i;
- }
- }
- }
- t2 = wallclock_time();
- tfft += t2 - t3;
-
- if (verbose) vmess("*** Iteration %d finished ***", iter);
-
- } /* end of iterations */
-
- t2 = wallclock_time();
- if (verbose) {
- vmess("Total CPU-time marchenko = %.3f", t2-t0);
- vmess("with CPU-time synthesis = %.3f", tsyn);
- vmess("and CPU-time fft data = %.3f", tfft);
- vmess("and CPU-time read data = %.3f", tread);
- }
-
-/*================ write output files ================*/
-
-/*
- n1 = nts; n2 = n2out;
- f1 = ft; f2 = fxs;
- d1 = dt;
- if (reci == 0) d2 = dxsrc;
- else if (reci == 1) d2 = dxs;
- else if (reci == 2) d2 = dx;
-
- hdrs_out = (segy *) calloc(n2,sizeof(segy));
- if (hdrs_out == NULL) verr("allocation for hdrs_out");
- size = nxs*nts;
-*/
-
- fp_out = fopen(file_green, "w+");
- if (fp_out==NULL) verr("error on creating output file %s", file_green);
- if (file_gmin != NULL) {
- fp_gmin = fopen(file_gmin, "w+");
- if (fp_gmin==NULL) verr("error on creating output file %s", file_gmin);
- }
- if (file_gplus != NULL) {
- fp_gplus = fopen(file_gplus, "w+");
- if (fp_gplus==NULL) verr("error on creating output file %s", file_gplus);
- }
- if (file_f2 != NULL) {
- fp_f2 = fopen(file_f2, "w+");
- if (fp_f2==NULL) verr("error on creating output file %s", file_f2);
- }
- if (file_pmin != NULL) {
- fp_pmin = fopen(file_pmin, "w+");
- if (fp_pmin==NULL) verr("error on creating output file %s", file_pmin);
- }
- if (file_f1plus != NULL) {
- fp_f1plus = fopen(file_f1plus, "w+");
- if (fp_f1plus==NULL) verr("error on creating output file %s", file_f1plus);
- }
- if (file_f1min != NULL) {
- fp_f1min = fopen(file_f1min, "w+");
- if (fp_f1min==NULL) verr("error on creating output file %s", file_f1min);
- }
-
-
- tracf = 1;
- for (l = 0; l < Nsyn; l++) {
- if (ixa || ixb) f2 = xsyn[l]-ixb*d2;
- else {
- if (reci) f2 = fxs;
- else f2 = fxf;
- }
-
- for (i = 0; i < n2; i++) {
- hdrs_out[i].fldr = l+1;
- hdrs_out[i].sx = NINT(xsyn[l]*1000);
- hdrs_out[i].offset = (long)NINT((f2+i*d2) - xsyn[l]);
- hdrs_out[i].tracf = tracf++;
- hdrs_out[i].selev = NINT(zsyn[l]*1000);
- hdrs_out[i].sdepth = NINT(-zsyn[l]*1000);
- hdrs_out[i].f1 = f1;
- }
-
- ret = writeData(fp_out, (float *)&green[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
-
- if (file_gmin != NULL) {
- ret = writeData(fp_gmin, (float *)&Gmin[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- if (file_gplus != NULL) {
- ret = writeData(fp_gplus, (float *)&Gplus[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- if (file_f2 != NULL) {
- ret = writeData(fp_f2, (float *)&f2p[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- if (file_pmin != NULL) {
- ret = writeData(fp_pmin, (float *)&pmin[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- if (file_f1plus != NULL) {
- /* rotate to get t=0 in the middle */
- for (i = 0; i < n2; i++) {
- hdrs_out[i].f1 = -n1*0.5*dt;
- memcpy(&trace[0],&f1plus[l*size+i*nts],nts*sizeof(float));
- for (j = 0; j < n1/2; j++) {
- f1plus[l*size+i*nts+n1/2+j] = trace[j];
- }
- for (j = n1/2; j < n1; j++) {
- f1plus[l*size+i*nts+j-n1/2] = trace[j];
- }
- }
- ret = writeData(fp_f1plus, (float *)&f1plus[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- if (file_f1min != NULL) {
- /* rotate to get t=0 in the middle */
- for (i = 0; i < n2; i++) {
- hdrs_out[i].f1 = -n1*0.5*dt;
- memcpy(&trace[0],&f1min[l*size+i*nts],nts*sizeof(float));
- for (j = 0; j < n1/2; j++) {
- f1min[l*size+i*nts+n1/2+j] = trace[j];
- }
- for (j = n1/2; j < n1; j++) {
- f1min[l*size+i*nts+j-n1/2] = trace[j];
- }
- }
- ret = writeData(fp_f1min, (float *)&f1min[l*size], hdrs_out, n1, n2);
- if (ret < 0 ) verr("error on writing output file.");
- }
- }
- ret = fclose(fp_out);
- if (file_gplus != NULL) {ret += fclose(fp_gplus);}
- if (file_gmin != NULL) {ret += fclose(fp_gmin);}
- if (file_f2 != NULL) {ret += fclose(fp_f2);}
- if (file_pmin != NULL) {ret += fclose(fp_pmin);}
- if (file_f1plus != NULL) {ret += fclose(fp_f1plus);}
- if (file_f1min != NULL) {ret += fclose(fp_f1min);}
- if (ret < 0) verr("err %d on closing output file",ret);
-
- if (verbose) {
- t1 = wallclock_time();
- vmess("and CPU-time write data = %.3f", t1-t2);
- }
-
-/*================ free memory ================*/
-
- free(hdrs_out);
- free(tapersy);
- free(Ni);
-
- exit(0);
-}
-
-
-/*================ Convolution and Integration ================*/
-
-void synthesis(complex *Refl, complex *Fop, float *iRN, int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int ntfft, int nw, int nw_low, int nw_high, int reci, int nshots, int verbose)
-{
- int nfreq, size, iox, inx;
- float scl;
- int i, j, l, m, ixsrc, ix, ixrcv, dosrc, k;
- float *rdata, *p, **dum, x0, x1;
- static double t0, t1, tfft, t;
- complex *sum, *cdata, tmp, ts, to;
- int npe;
-
- size = nxs*nts;
- nfreq = ntfft/2+1;
- /* scale factor 1/N for backward FFT,
- * scale dt for correlation/convolution along time,
- * scale dx (or dxsrc) for integration over receiver (or shot) coordinates */
- scl = 1.0*dt/((float)ntfft);
-
- t0 = wallclock_time();
-
- /* reset output data to zero */
- memset(&iRN[0], 0, Nsyn*nxs*nts*sizeof(float));
-
- for (k=0; k<nshots; k++) {
-
- ixsrc = NINT((xsrc[k] - fxs)/dxs);
-/* if (verbose>=3) {
- vmess("source position: %.2f in operator %d", xsrc[k], ixsrc);
- vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
- }
-*/
- if ((NINT(xsrc[k]-fxs2) > 0) || (NINT(xrcv[k*nx+nx-1]-fxs2) > 0) ||
- (NINT(xrcv[k*nx+nx-1]-fxs) < 0) || (NINT(xsrc[k]-fxs) < 0) ||
- (NINT(xrcv[k*nx+0]-fxs) < 0) || (NINT(xrcv[k*nx+0]-fxs2) > 0) ) {
- vwarn("source/receiver positions are outside synthesis model");
- vwarn("integration calculation is stopped at gather %d", k);
- vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nx+0], xrcv[k*nx+nx-1]);
- break;
- }
-
-
- iox = 0; inx = nx;
-
-/*================ SYNTHESIS ================*/
-
-#ifdef _OPENMP
- npe = omp_get_max_threads();
- /* parallelisation is over number of virtual source positions (Nsyn) */
- if (npe > Nsyn) {
- vmess("Number of OpenMP threads set to %d (was %d)", Nsyn, npe);
- omp_set_num_threads(Nsyn);
- }
-#endif
-
-#pragma omp parallel default(none) \
- shared(iRN, dx, npe, nw, verbose) \
- shared(Refl, Nsyn, reci, xrcv, xsrc, xsyn, fxs, nxs, dxs) \
- shared(nx, ixa, ixb, dxsrc, iox, inx, k, nfreq, nw_low, nw_high) \
- shared(Fop, size, nts, ntfft, scl, ixsrc, stderr) \
- private(l, x0, x1, ix, dosrc, j, m, i, ixrcv, sum, rdata, tmp, ts, to)
- { /* start of parallel region */
- sum = (complex *)malloc(nfreq*sizeof(complex));
- rdata = (float *)calloc(ntfft,sizeof(float));
-#pragma omp for
- for (l = 0; l < Nsyn; l++) {
-
- ix = k;
- x0 = fxs;
- x1 = fxs+dxs*nxs;
- dosrc = 1;
- for (j = 0; j < nfreq; j++) sum[j].r = sum[j].i = 0.0;
- for (j = nw_low, m = 0; j <= nw_high; j++, m++) {
- for (i = iox; i < inx; i++) {
- ixrcv = NINT((xrcv[k*nx+i]-fxs)/dxs);
- tmp = Fop[l*nw*nxs+m*nxs+ixrcv];
- sum[j].r += Refl[k*nw*nx+m*nx+i].r*tmp.r -
- Refl[k*nw*nx+m*nx+i].i*tmp.i;
- sum[j].i += Refl[k*nw*nx+m*nx+i].i*tmp.r +
- Refl[k*nw*nx+m*nx+i].r*tmp.i;
- }
- }
-#pragma omp critical
-{
- cr1fft(sum, rdata, ntfft, 1);
-}
- /* dx = receiver distance */
- for (j = 0; j < nts; j++)
- iRN[l*size+ix*nts+j] += rdata[j]*scl*dx;
-
- } /* end of parallel Nsyn loop */
-
- free(sum);
- free(rdata);
-
-#pragma omp single
-{
-#ifdef _OPENMP
- npe = omp_get_num_threads();
-#endif
-}
- } /* end of parallel region */
-
- if (verbose>3) vmess("*** Shot gather %d processed ***", k);
-
- } /* end of nshots (k) loop */
-
- t = wallclock_time() - t0;
- if (verbose) {
- vmess("OMP: parallel region = %f seconds (%d threads)", t, npe);
- }
-
- return;
-}
-
-void synthesisPosistions(int nx, int nt, int nxs, int nts, float dt, float *xsyn, int Nsyn, float *xrcv, float *xsrc, float fxs2, float fxs, float dxs, float dxsrc, float dx, int ixa, int ixb, int reci, int nshots, int *ixpossyn, int *npossyn, int verbose)
-{
- int nfreq, size, iox, inx;
- float scl;
- int i, j, l, m, ixsrc, ix, ixrcv, dosrc, k;
- float *rdata, *p, **dum, x0, x1;
- static double t0, t1, tfft, t;
- complex *sum, *cdata, tmp, ts, to;
- int npe;
-
-
-/*================ SYNTHESIS ================*/
-
- for (l = 0; l < 1; l++) { /* assuming all synthesis operators cover the same lateral area */
-// for (l = 0; l < Nsyn; l++) {
- *npossyn=0;
-
- for (k=0; k<nshots; k++) {
-
- ixsrc = NINT((xsrc[k] - fxs)/dxs);
- if (verbose>=3) {
- vmess("source position: %.2f in operator %d", xsrc[k], ixsrc);
- vmess("receiver positions: %.2f <--> %.2f", xrcv[k*nx+0], xrcv[k*nx+nx-1]);
- }
-
- if ((NINT(xsrc[k]-fxs2) > 0) || (NINT(xrcv[k*nx+nx-1]-fxs2) > 0) ||
- (NINT(xrcv[k*nx+nx-1]-fxs) < 0) || (NINT(xsrc[k]-fxs) < 0) ||
- (NINT(xrcv[k*nx+0]-fxs) < 0) || (NINT(xrcv[k*nx+0]-fxs2) > 0) ) {
- vwarn("source/receiver positions are outside synthesis model");
- vwarn("integration calculation is stopped at gather %d", k);
- vmess("xsrc = %.2f xrcv_1 = %.2f xrvc_N = %.2f", xsrc[k], xrcv[k*nx+0], xrcv[k*nx+nx-1]);
- break;
- }
-
- iox = 0; inx = nx;
-
- if (ixa || ixb) {
- if (reci == 0) {
- x0 = xsyn[l]-ixb*dxsrc;
- x1 = xsyn[l]+ixa*dxsrc;
- if ((xsrc[k] < x0) || (xsrc[k] > x1)) continue;
- ix = NINT((xsrc[k]-x0)/dxsrc);
- dosrc = 1;
- }
- else if (reci == 1) {
- x0 = xsyn[l]-ixb*dxs;
- x1 = xsyn[l]+ixa*dxs;
- if (((xsrc[k] < x0) || (xsrc[k] > x1)) &&
- (xrcv[k*nx+0] < x0) && (xrcv[k*nx+nx-1] < x0)) continue;
- if (((xsrc[k] < x0) || (xsrc[k] > x1)) &&
- (xrcv[k*nx+0] > x1) && (xrcv[k*nx+nx-1] > x1)) continue;
- if ((xsrc[k] < x0) || (xsrc[k] > x1)) dosrc = 0;
- else dosrc = 1;
- ix = NINT((xsrc[k]-x0)/dxs);
- }
- else if (reci == 2) {
- if (NINT(dxsrc/dx)*dx != NINT(dxsrc)) dx = dxs;
- x0 = xsyn[l]-ixb*dx;
- x1 = xsyn[l]+ixa*dx;
- if ((xrcv[k*nx+0] < x0) && (xrcv[k*nx+nx-1] < x0)) continue;
- if ((xrcv[k*nx+0] > x1) && (xrcv[k*nx+nx-1] > x1)) continue;
- }
- }
- else {
- ix = k;
- x0 = fxs;
- x1 = fxs+dxs*nxs;
- dosrc = 1;
- }
- if (reci == 1 && dosrc) ix = NINT((xsrc[k]-x0)/dxs);
-
- if (reci < 2 && dosrc) {
- ixpossyn[*npossyn]=ixsrc;
- *npossyn += 1;
- }
-// fprintf(stderr,"ixpossyn[%d] = %d ixsrc=%d ix=%d\n", *npossyn-1, ixpossyn[*npossyn-1], ixsrc, ix);
-
- if (reci == 1 || reci == 2) {
- for (i = iox; i < inx; i++) {
- if ((xrcv[k*nx+i] < x0) || (xrcv[k*nx+i] > x1)) continue;
- if (reci == 1) ix = NINT((xrcv[k*nx+i]-x0)/dxs);
- else ix = NINT((xrcv[k*nx+i]-x0)/dx);
-
- ixpossyn[*npossyn]=ix;
- *npossyn += 1;
-
- }
- }
-
- } /* end of Nsyn loop */
-
- } /* end of nshots (k) loop */
-
- return;
-}
--
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