calc_res.c 12.2 KB
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/*-----------------------------------------------------------------------------------------
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 * Copyright (C) 2016  For the list of authors, see file AUTHORS.
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 *
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 * This file is part of IFOS.
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 *
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 * IFOS is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2.0 of the License only.
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 *
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 * IFOS is distributed in the hope that it will be useful,
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 * 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.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with IFOS. See file COPYING and/or <http://www.gnu.org/licenses/gpl-2.0.html>.
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 -----------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------
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 *   Calculate Data Residuals
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 *  ----------------------------------------------------------------------*/
#include "fd.h"

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double calc_res(float **sectiondata, float **section, float **sectiondiff, float **sectiondiffold, int ntr, int ns, int LNORM, float L2, int itest, int sws, int swstestshot, int ntr_glob, int **recpos_loc, int nsrc_glob, int ishot, int iter, float ** srcpos, int ** recpos){
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    /* declaration of variables */
    extern float DT, WATERLEVEL_LNORM8;
    extern int REC1, REC2, MYID, ACOUSTIC;
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    extern int TRKILL, NORMALIZE, F_LOW_PASS, TIMEWIN;
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    extern char TRKILL_FILE[STRING_SIZE];
    extern int VELOCITY, USE_WORKFLOW, WORKFLOW_STAGE;
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    float RMS, signL1;
    int i,j,invtime,h, umax=0;
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    float l2;
    float abs_section, abs_sectiondata, sectiondata_mult_section;
    float intseis_s, intseis_sd;
    float *picked_times=NULL;
    float **intseis_section=NULL, **intseis_sectiondata=NULL;
    float **intseis_sectiondata_envelope=NULL, **intseis_section_envelope=NULL, **intseis_section_hilbert=NULL, **dummy_1=NULL, **dummy_2=NULL;
    
    if(LNORM==8){
        intseis_section_envelope = matrix(1,ntr,1,ns);
        intseis_sectiondata_envelope = matrix(1,ntr,1,ns);
        intseis_section_hilbert = matrix(1,ntr,1,ns);
        dummy_1 = matrix(1,ntr,1,ns);
        dummy_2 = matrix(1,ntr,1,ns);
    }
    
    intseis_section = matrix(1,ntr,1,ns);  /* declaration of variables for integration */
    intseis_sectiondata = matrix(1,ntr,1,ns);
    if(TIMEWIN) picked_times = vector(1,ntr); /* declaration of variables for TIMEWIN */
    
    /* sectiondiff will be set to zero */
    umax=ntr*ns;
    zero(&sectiondiff[1][1],umax);
    
    /* TRACE KILLING */
    int ** kill_tmp, *kill_vector;	/* declaration of variables for trace killing */
    char trace_kill_file[STRING_SIZE];
    FILE *ftracekill;
    extern int TRKILL_OFFSET;
    extern float TRKILL_OFFSET_LOWER;
    extern float TRKILL_OFFSET_UPPER;
    
    /*-----------------*/
    /* Start Tracekill */
    /*-----------------*/
    if(TRKILL){
        kill_tmp = imatrix(1,ntr_glob,1,nsrc_glob);
        kill_vector = ivector(1,ntr);
        
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        /*------------------*/
        /* clear kill table */
        /*------------------*/
        for(i=1;i<=nsrc_glob;i++){
            for (j=1; j<=ntr_glob; j++) {
                kill_tmp[j][i]=0;
            }
        }
        
        /* Use ONLY offset based TraceKill */
        if(TRKILL_OFFSET==1) {
            /* Generate TraceKill file on the fly based on the offset from the source */
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            create_trkill_table(kill_tmp,ntr_glob,recpos,nsrc_glob,srcpos,ishot,TRKILL_OFFSET_LOWER,TRKILL_OFFSET_UPPER);
        } else {
            
            /* READ TraceKill file from disk */
            
            if(USE_WORKFLOW){
                sprintf(trace_kill_file,"%s_%i.dat",TRKILL_FILE,WORKFLOW_STAGE);
                ftracekill=fopen(trace_kill_file,"r");
                if (ftracekill==NULL){
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                    /* If Workflow TraceKill file not found use File without workflow extensions */
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                    sprintf(trace_kill_file,"%s.dat",TRKILL_FILE);
                    ftracekill=fopen(trace_kill_file,"r");
                    if (ftracekill==NULL){
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                        declare_error(" Trace kill file could not be opened!");
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                    }
                }
            }else{
                sprintf(trace_kill_file,"%s.dat",TRKILL_FILE);
                ftracekill=fopen(trace_kill_file,"r");
                if (ftracekill==NULL){
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                    declare_error(" Trace kill file could not be opened!");
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                }
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            }
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            for(i=1;i<=ntr_glob;i++){
                for(j=1;j<=nsrc_glob;j++){
                    fscanf(ftracekill,"%d",&kill_tmp[i][j]);
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                    if(feof(ftracekill)){
                        declare_error(" Error while reading TraceKill file. Check dimensions!");
                    }
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                }
            }
            
            fclose(ftracekill);
            
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            /* Use Tracekill FILE and add the offset based TraceKill */
            if(TRKILL_OFFSET==2) {
                create_trkill_table(kill_tmp,ntr_glob,recpos,nsrc_glob,srcpos,-100,TRKILL_OFFSET_LOWER,TRKILL_OFFSET_UPPER);
            }
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        }
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        /* Generate local kill vector */
        h=1;
        for(i=1;i<=ntr;i++){
            kill_vector[h] = kill_tmp[recpos_loc[3][i]][ishot];
            h++;
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        }
    }
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    /*---------------*/
    /* End Tracekill */
    /*---------------*/
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    /* Integration of measured and synthetic data  */
    for(i=1;i<=ntr;i++){
        intseis_s=0;
        intseis_sd=0;
        if (VELOCITY==0){	/* only integtration if displacement seismograms are inverted */
            for(j=1;j<=ns;j++){
                intseis_s  += section[i][j];
                intseis_section[i][j]     = intseis_s*DT;
                intseis_sd += sectiondata[i][j];
                intseis_sectiondata[i][j] = intseis_sd*DT;
            }
        }else{
            for(j=1;j<=ns;j++){
                intseis_section[i][j]     = section[i][j];
                intseis_sectiondata[i][j] = sectiondata[i][j];
            }
        }
    }
    
    /* TIME WINDOWING */
    if(TIMEWIN==1){
        time_window(intseis_section, iter, ntr_glob,recpos_loc, ntr, ns, ishot);
        time_window(intseis_sectiondata, iter, ntr_glob,recpos_loc, ntr, ns, ishot);
    }
    
    /* NORMALIZE TRACES */
    if(NORMALIZE==1){
        normalize_data(intseis_section,ntr,ns);
        normalize_data(intseis_sectiondata,ntr,ns);
    }
    
    /* calculate RMS */
    /*for(i=1;i<=ntr;i++){
     for(j=1;j<=ns;j++){*/
    /*RMS += (sectionpdata[i][j]-sectionvx[i][j]) * (sectionpdata[i][j]-sectionvx[i][j]);*/
    /*RMS += (sectionpdata[i][j]) * (sectionpdata[i][j]);*/
    /*      Lcount++;
     }
     } */
    
    /*RMS=sqrt(RMS/Lcount);*/
    RMS=1.0;
    
    /* calculate weighted data residuals and reverse time direction */
    /* calculate kind of "energy" */
    
    /* calculate envelope and hilbert transform for LNORM==8 */
    if (LNORM==8){
        calc_envelope(intseis_sectiondata,intseis_sectiondata_envelope,ns,ntr);
        calc_envelope(intseis_section,intseis_section_envelope,ns,ntr);
        calc_hilbert(intseis_section,intseis_section_hilbert,ns,ntr);
        for(i=1;i<=ntr;i++){
            for(j=1;j<=ns;j++){
                dummy_1[i][j] = (intseis_section_envelope[i][j] - intseis_sectiondata_envelope[i][j]) / (intseis_section_envelope[i][j]+WATERLEVEL_LNORM8) * intseis_section_hilbert[i][j];
            }
        }
        calc_hilbert(dummy_1,dummy_2,ns,ntr);
    }
    /* end of calculate envelope and hilbert transform for LNORM==8 */
    
    for(i=1;i<=ntr;i++){
        if((TRKILL==1)&&(kill_vector[i]==1))
            continue;
        
        if ((LNORM==5) || (LNORM==7)){
            abs_sectiondata=0.0;
            abs_section=0.0;
            sectiondata_mult_section=0.0;
            
            for(j=1;j<=ns;j++){
                abs_sectiondata+=intseis_sectiondata[i][j]*intseis_sectiondata[i][j];
                abs_section+=intseis_section[i][j]*intseis_section[i][j];
                sectiondata_mult_section+=intseis_sectiondata[i][j]*intseis_section[i][j]; /* calculation of dot product for measured (section) and synthetic (sectiondata) data*/
            }
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            if (abs_sectiondata==0) abs_sectiondata=1;
	    else abs_sectiondata=sqrt(abs_sectiondata);
	    if (abs_section==0) abs_section==1;
            else abs_section=sqrt(abs_section);
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        }
        /* calculate residual seismograms and norm */
        
        if((TRKILL==1)&&(kill_vector[i]==1))
            continue;
        
        /*reverse time direction */
        invtime=ns;
        
        for(j=1;j<=ns;j++){
            /*printf("%d \t %d \t %e \t %e \n",i,j,sectionpdata[i][j],sectionp[i][j]);*/
            /* calculate L1 residuals */
            if(LNORM==1){
                if(((sectiondata[i][j]-section[i][j])/RMS)>0){signL1=1.0;}
                if(((sectiondata[i][j]-section[i][j])/RMS)<0){signL1=-1.0;}
                if(((sectiondata[i][j]-section[i][j])/RMS)==0){signL1=0.0;}
                
                sectiondiff[i][invtime]=signL1/RMS;
            }
            
            /* calculate L2 residuals */
            if(LNORM==2){
                sectiondiff[i][invtime] = intseis_section[i][j]-intseis_sectiondata[i][j];
            }
            
            /* calculate Cauchy residuals */  /* NOT UP TO DATE */
            if(LNORM==3){
                sectiondiff[i][invtime]=((sectiondata[i][j]-section[i][j])/RMS)/(1+(((sectiondata[i][j]-section[i][j])/RMS)*((sectiondata[i][j]-section[i][j])/RMS)))/RMS;
            }
            
            /* calculate sech residuals */   /* NOT UP TO DATE */
            if(LNORM==4){
                sectiondiff[i][invtime]=(tanh((sectiondata[i][j]-section[i][j])/RMS))/RMS;
            }
            
            /* calculate LNORM 5 or LNORM 7 residuals */
            if((LNORM==5) || (LNORM==7)){
                sectiondiff[i][invtime]=((intseis_section[i][j]*sectiondata_mult_section)/(abs_section*abs_section*abs_section*abs_sectiondata)) - (intseis_sectiondata[i][j]/(abs_section*abs_sectiondata));
            }
            
            /* calculate LNORM 8 residuals */
            if (LNORM==8){
                sectiondiff[i][invtime]=intseis_section[i][j]/(intseis_section_envelope[i][j]+WATERLEVEL_LNORM8)*(intseis_section_envelope[i][j]-intseis_sectiondata_envelope[i][j])-dummy_2[i][j];
            }
            
            /*sectionpdiff[i][invtime]=sectionp[i][j];*/
            
            /* calculate norm for different LNORM */
            if((LNORM==2) && (swstestshot==1)){
                L2+=sectiondiff[i][invtime]*sectiondiff[i][invtime];
            }
            
            if(((LNORM==5)||(LNORM==7)) && (swstestshot==1)){
                L2-=(intseis_sectiondata[i][j]*intseis_section[i][j])/(abs_sectiondata*abs_section);
            }
            
            if((LNORM==8) && (swstestshot==1)){
                L2+=(intseis_section_envelope[i][invtime]-intseis_sectiondata_envelope[i][invtime]) * (intseis_section_envelope[i][invtime]-intseis_sectiondata_envelope[i][invtime]);
            }
            
            if((sws==2)&&(swstestshot==1)){
                L2+=fabs(sectiondiff[i][invtime])*fabs(sectiondiffold[i][j]);
            }
            
            /*L2+=sectiondiff[i][invtime];*/
            
            invtime--;          /* reverse time direction */
        }
    }
    
    l2=L2;
    
    // taper(sectiondiff,ntr,ns);
    /* printf("\n MYID = %i   IN CALC_RES: L2 = %10.12f \n",MYID,l2); */
    
    /* free memory for integrated seismograms */
    free_matrix(intseis_section,1,ntr,1,ns);
    free_matrix(intseis_sectiondata,1,ntr,1,ns);
    
    /* free memory for time windowing and trace killing */
    if(TIMEWIN==1) free_vector(picked_times,1,ntr);
    
    if(TRKILL==1){
        free_imatrix(kill_tmp,1,ntr_glob,1,nsrc_glob);
        free_ivector(kill_vector,1,ntr);
    }
    
    if(LNORM==8){
        free_matrix(intseis_sectiondata_envelope,1,ntr,1,ns);
        free_matrix(intseis_section_envelope,1,ntr,1,ns);
        free_matrix(intseis_section_hilbert,1,ntr,1,ns);
        free_matrix(dummy_1,1,ntr,1,ns);
        free_matrix(dummy_2,1,ntr,1,ns);
    }
    return l2;
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} /* end of function */