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Hi folks,
I been doing some testing with magnetometers, specifically the LSM303DLHC. This sensor has several ranges, with the most sensitive being +/- 1.3 Gauss, full scale. It looks like that gives you a resolution of 63.5 nano Teslas per count.
Is this a high enough resolution to make useful ground surveys with. or does it need more sensitivity?
I know that at my latitude (37 deg N), the earth's magnetic field is about 50,000 nano Teslas. In doing a ground survey for an area, say the size of a field (1 acre or 4000 m^2), would that resolution produce any useful results for large ground anomalies like a cache in the ground? I understand it probably would not be obviously visible, but if plotted in color, it might show differently I'm guessing.
Just curious. Its an interesting chip, typically used with drones and UAV's, but I'm wondering if there could be any applications for MD. Perhaps if multiple sensors could be used as a form of crude "oversampling".
I been doing some testing with magnetometers, specifically the LSM303DLHC. This sensor has several ranges, with the most sensitive being +/- 1.3 Gauss, full scale. It looks like that gives you a resolution of 63.5 nano Teslas per count.
Is this a high enough resolution to make useful ground surveys with. or does it need more sensitivity?
I know that at my latitude (37 deg N), the earth's magnetic field is about 50,000 nano Teslas. In doing a ground survey for an area, say the size of a field (1 acre or 4000 m^2), would that resolution produce any useful results for large ground anomalies like a cache in the ground? I understand it probably would not be obviously visible, but if plotted in color, it might show differently I'm guessing.
Just curious. Its an interesting chip, typically used with drones and UAV's, but I'm wondering if there could be any applications for MD. Perhaps if multiple sensors could be used as a form of crude "oversampling".
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