trace_file.h

/* trace_file.h */
/* $Revision: 1.15 $    trace_file.h    $Date: 2008/12/09 08:10:04 $ */
#ifndef __trace_file_h
#define __trace_file_h

/*************************************************************
 * Trace file.  Data types.
 *************************************************************/

#include <mix/Types.h>

/*
 * Trace header
 */
typedef struct
{
  /* SDS-5 like structure */
  Int4  NMGL;       /* 01 - Seq. record number */
  Int4  NTR;        /* 02 - Trace number in record */
  Int4  SIZE;       /* 03 - Header length (in 4-byte words) - 60 */
  Int4  ACT;        /* 04 - Actual code */
  Int4  NMGF;       /* 05 - Field record number */
  Int4  XSP;        /* 06 - Shot point coordinate */
  Int4  XDP;        /* 07 - CDP coordinate */
  Int4  XOP;        /* 08 - Receive point coordinate */
  Int4  L;      /* 09 - Distance */
  Int4  FTR;        /* 10 - Format code (see AtomType) */
  Int4  TBC;        /* 11 - Start time (common) */
  Int4  TEC;        /* 12 - Stop time (common) */
  Int4  TBA;        /* 13 - First nonzero sample time */
  Int4  TEA;        /* 14 - Last nonzero sample time */
  Int4  DT;     /* 15 - Sampling rate (0..16 - ms; 17.. - us) */
  Int4  P;      /* 16 - Weight (percent) */
  Int4  VER;        /* 17 - Version number */
  Int4  NCF;        /* 18 - Normalization coefficient */
  Int4  NSP;        /* 19 - Shot point number (unique number) */
  Int4  YSP;        /* 20 - Y shot point coordinate */
  Int4  YDP;        /* 21 - Y CDP coordinate */
  Int4  YOP;        /* 22 - Y receive point coordinate */
  Int4  NXBN;       /* 23 - X bin number for CDP image */
  Int4  NYBN;       /* 24 - Y bin number for CDP image */
  Int4  XMC;        /* 25 - X-coordinate centre of masse */
  Int4  YMC;        /* 26 - Y-coordinate centre of masse */
  Char  PNAME[8];   /* 27 - Tested parameter name */
  Int4  PVAL;       /* 29 - Tested parameter value (SDS-5)
                  NSP of correlated trace with this one DTYPE=7 */
  Int4  PPGM;       /* 30 - Number of program in chain
                  NRP of correlated trace with this one DTYPE=7  */

  /* UNIVERS extensions */
  Int4  TRFR;       /* 31 - Trace number on field record */
  Real4 XSPV;       /* 32 - Shot point coordinate */
  Real4 YSPV;       /* 33 - Shot point coordinate */
  Real4 ZSPV;       /* 34 - Shot point coordinate */
  Real4 XOPV;       /* 35 - Receive point coordinate */
  Real4 YOPV;       /* 36 - Receive point coordinate */
  Real4 ZOPV;       /* 37 - Receive point coordinate */
  Real4 XDPV;       /* 38 - Depth point coordinate */
  Real4 YDPV;       /* 39 - Depth point coordinate */
  Real4 ZDPV;       /* 40 - Depth point coordinate */
  Real4 HCAB;       /* 41 - Cable depth */
  Char  TYPE[4];    /* 42 - Type of trace in first byte:
             *      D - downhole, C - control,
             *      S - surface, A - auxiliary */
  Char  COMP[4];    /* 43 - Registred component in first byte:
             *      XYZ, 1234..9, PRT - downhole, control;
             *      B - time break (auxiliary type),
             *      U - uphole time (auxiliary type) */
  Char  WCODE[12];  /* 44-46 - Well name or section name (len<=12) */
  Real4 DHSP;       /* 47 - Altitude difference (shot point-well mouth) */
  Real4 DELAY;      /* 48 - Size of negative left part of operator, ms */
  Int4  NDP;        /* 49 - CDP number */
  Real4 AZIMUTH;    /* 50 - Azimuth of the trace (degrees) */
  Real4 DIP;        /* 51 - Dip of the trace (degrees) */
  Real4 TFB;        /* 52 - First break time (ms) */
  Real4 AMAX;       /* 53 - Maximum amplitude of the trace */
  Real4 AMIN;       /* 54 - Minimum amplitude of the trace */
  Int4  NSL;        /* 55 - Shot line number */
  Int4  NSS;        /* 56 - Shot station number on the shot line */
  Int4  NRP;        /* 57 - Receiver point number (unique number) */
  Int4  NRL;        /* 58 - Receiver line number */
  Int4  NRS;        /* 59 - Receiver station number on receiver line */
  Int4  REZ[1];     /* 60 - Reserved */

}   TrHeader;


#endif /* trace_file.h */