Land Survey Possibilities
smaller scale modes of operation are ideal for land survey
operation. MagSurvey software can allow real-time land
magnetometer surveys involving a smaller crew, far fewer man
hours, and a shorter time to completion. It is now possible
to use MagSurvey with certain metal detectors, as well.
possible configuration is to backpack-mount a battery pack and a
magnetometer control unit. A magnetometer sensor and one of
the small, display-less GPS receivers could mount on a pole
attached to the backpack, and the surveyor might hand carry a
TabletPC. See the other sections of this document for full
discussion of the various equipment mentioned. The computer
is connected by one or two USB or serial port cables and,
optionally, a cable carrying external battery power to the PC.
Once turned-on, it should not be necessary to access any of the
GPS or magnetometer controls or displays.
metal detectors can be substituted for the magnetometer equipment
mentioned above. COMING SOON: the small TargetSpy
Metal Detector Interface cable module will be available for use
with most metal detectors that have audio output through a
headphone jack -- this should eliminate the need for the backpack
and battery pack for metal detector surveys.
application where the PC is in close proximity to the GPS
receiver, the magnetometer sensor, or the metal detector, it is
recommended that any unused PC communications such as WiFi or
BlueTooth be deactivated, if possible to do so.
possible, conduct surveys outdoors with a good view of the
surrounding sky, and with a minimum of surrounding structures or
dense, tall vegetation. When performing surveys, the
operator should strive to maintain a clear shot from the GPS
antenna to the appropriate high-above-equator, WAAS differential
correction satellite. In the US, the direction to the main
geo-stationary satellite (#51) ranges from southwest (on the east
coast), to south-southeast (on the west coast). If
Require-Differential-Corrections mode is set, MagSurvey will not
plot anomalies unless a strong position is obtained, and the
initial satellite acquisition can take extra time (there is a
MagSurvey option to not require the differential corrections).
devices have not been tested by PSI to determine if their magnetic
signatures are low enough for close-proximity, hand-carried use.
However, the free downloadable MagSurvey evaluation software
allows prospective customers to fully test all hardware
configurations before purchasing the MagSurvey software.
MagSurvey's real-time 3D and 2D displays are immediately
accessible with a single button click -- great for
navigation and for determining if areas have been missed -- also
ideal for accurately returning to a point of interest.
and suggestions on MagSurvey products are always welcomed.
Donald O. Land