/****************************************************************************** FILE: refabs.cnt This control file is used with the refabs program to calculate the raw absolute reference layer velocities. Averaged between fixes, this is the difference between the velocity of the ship over the ground, determined from the fixes, and the velocity of ship relative to the reference layer velocity, from the ADCP profiles. INPUT: text file of ship velocity relative to reference layer (adcpsect .nav) text file of position fixes with bad fixes commented out OUTPUT: text file with the following columns: 1. fix time (in decimal days) 2. longitude (in decimal degrees) 3. latitude (in decimal degrees) 4. zonal component of absolute reference layer velocity (in m/s) 5. meridional component of absolute reference layer velocity (in m/s) 6. fix interval (in minutes) 7. zonal velocity cumulated over gap (in m/s) 8. meridional velocity cumulated over gap (in m/s) 9. length of gap (in minutes) ------------------------------------------------------------------------------- CONTROL FILE STRUCTURE: fix_file_type: < simple | HIG > { format of input fix file } reference_file: < input file of relative ship velocity > { adcpsect .nav } fix_file: < input file of position fixes > { time, lon, lat } output: < output filename > year_base= < base year for decimal days > ensemble_length= < no. of seconds in ensemble > gap_tolerance= < maximum seconds discrepancy between profile & fix time > { allow a little, perhaps 10 } -----------------------------------------------------------------------------*/ fix_file_type: simple reference_file: ademo.nav fix_file: ademo.ags output: ademo.ref year_base= 1993 ensemble_length= 300 /* 5-minute ensemble */ gap_tolerance= 10 /*****************************************************************************/