Mapping of GPR (PulseECCO) files

File header

Name in SIA	First byte	Length	Format in file	Format in SIA	Description
smpint	17	2	INTEGER	INTEGER	Sample interval
sampi	19	2	INTEGER	INTEGER
npoints	21	2	INTEGER	INTEGER
npoint	23	2	INTEGER	INTEGER
ntraces	61	2	INTEGER	INTEGER
nstacks	71	2	INTEGER	INTEGER
pulvolt	73	2	INTEGER	INTEGER
freq	95	4	INTEGER	INTEGER
dewow	99	2	INTEGER	INTEGER

Trace header

Name in SIA	First byte	Length	Format in file	Format in SIA	Description
trnum	1	4	INTEGER	INTEGER	Trace number
trnum1	5	4	INTEGER	INTEGER
taprec	9	4	INTEGER	INTEGER
antsep	37	4	INTEGER	INTEGER
elev	41	4	INTEGER	INTEGER
elev1	45	4	INTEGER	INTEGER
trpos	73	4	INTEGER	INTEGER
tzero	105	2	INTEGER	INTEGER	Trace time start (t0)
npt	115	2	INTEGER	REAL	Number of samples per trace
npt1	117	2	INTEGER	INTEGER

Copyright (c) 1995-1999, I. B. Morozov, Rice University and University of Wyoming
This document updated Oct 02, 1999