G-858BP Backpack Mag Operators Manual
Chapter 12: MagMap2000 Software
The MagMap2000 software program provides the G-858BP user with data downloading and
editing capability. Acquired data is downloaded via high speed RS-232 communications link and then
manipulated to generate or edit interpolated X-Y or GPS position information. A primary application
included is the ability to apply diurnal correction from a base station. This requires secondary base station
data file with overlapping date and time information.
Editing functions include shifting lines, changing the direction of lines, appending or cutting lines,
deleting or inserting segments of lines or entire lines. Also included are data clean up routines including
the ability to remove zero “drop outs”, spikes and apply spline high pass or low pass filtering. The program
offers a de-striping wizard (heading error correction) and has an interpolator wizard to enable construction
of interpolated data files (can make a mag-GPS file from GPS-Time and Mag-Time files).
The resulting data can be plotted a profiles on the PC as a quality control measure and to assure
coherence between the original acquisition parameters and the final locations. In addition the program
provides simple gridding, contouring and plotting (printing) of the positions, track plots and magnetic
contour maps. The data can be exported in formats compatible with Surfer for Windows (*.DAT) or
Geosoft OASIS (*.XYZ).
Because of the power and complexity of the MagMap2000 program, its operation will not be
covered here. Please refer to the MagMap2000 Manual (available on the Magnetometer CD shipped with
the magnetometer system) for complete instructions on the use of the program. Also note that the
MagMap2000 Manual, the MagMap2000 program and this manual are available on our web
site www.geometrics.com
under Downloads, FTP, PUB, MAG. We recommend that you regularly visit
our site for the latest software upgrades.
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