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Abstract

Summary

Remotely piloted aircraft systems (RPAS) offer a wide range of applications for geophysical exploration. Methods developed for large-volume airborne gamma-ray spectrometry can be applied to RPAS mounted spectrometers, including calibration and post-processing. In the 2021 and 2022 field seasons, British Columbia Geological Survey used an DJI Matrice 600 Pro RPAS to collect gammaray spectrometer at 13 sites in British Columbia, Canada, over subglacial tills near known alkalic and calc-alkaline porphyry deposits. There is good agreement between BCGS high-resolution RPAS K data and existing regional-scale fixed wing data. RPAS data also agree well with existing till geochemistry and ground radiometrics The low sensitivity of the crystal, due to its low volume, requires the instrument to be flown at low altitudes above ground and to spend more time per surveyed area to achieve the equivalent statistics of a large volume detector. NASVD post-processing technique alleviates some of the limitations of the low-volume detector by increasing the signal-to-noise ratio; equivalent to increasing the volume of the detector.

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/content/papers/10.3997/2214-4609.202320085
2023-09-03
2025-07-20

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References

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/content/papers/10.3997/2214-4609.202320085
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Radiometrics with a RPAS: Calibration Method, Surveying, and Comparison to Historical Data
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202320085
/content/papers/10.3997/2214-4609.202320085
/content/papers/10.3997/2214-4609.202320085
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