The GEM Systems GSMP-35 potassium magnetometer is an optically pumped potassium vapor magnetometer. The GSMP-35 is also known as the “k-mag” just as Cesium magnetometers are know as “Cs-mags”. As of August 2013, GEM Advanced Magnetometers is the ONLY company offering these magnetometers to the market. The GSMP-35 is the most sensitive magnetometer commercially available. By […]
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Airborne magnetic surveys using unmanned aerial vehicles (UAV) and lightweight potassium magnetometers.
Airborne magnetic surveys using unmanned airborne vehicles need geophysical equipment that is lightweight. GEM Systems now sells an option for a lightweight electronics box case for the GSMP-35 “k-mag”. Optically pumped magnetometers have lightweight sensors, but the electronics boxes can be heavy due to the case material and thickness. Any internal frame that binds two […]
How to walk straighter and further with less effort when conducting ground geophysical surveys.
Some walk the line straighter than others. Walking straighter lines when conducting ground geophysical surveys increases the production l-km in a day. Alternatively, if there is a fixed amount of work to do in the day, then straighter lines means less walking and less stress on the body. Walking straight in thick vegetation is never […]
GEM Systems magnetometer navigation firmware now works. Many improvements coming soon!
Modern Mag in conjunction with GEM systems magnetometers is trialing new firmware for the GEM-19 and GSMP-35 series of magnetometers. For many years there has been a fatal flaw in the real time magnetometer navigation function. A programming error caused the lane guidance and distance to end of the line functions to fail, particularly for very long […]
Base station magnetometers for ground mag surveys.
While any kind of magnetometer can be used as a base station magnetometer to record temporal variations in the geomagnetic field, some are more accurate and convenient than others. It is convenient to use a base station from the same manufacturer since the software that comes free with those magnetometers can diurnally correct that data. […]
Geophysics heading corrections
Normally the only data correction applied to ground magnetic data is a diurnal (a.k.a base station) correction. This type of correction simply subtracts the static base station reading from the moving rover magnetometer reading of the same time. Cs vapour sensors also require a geophysics heading correction to account for the changes in magnetic field […]
