Andrew Boyd New generation helicopter time domain EM systems

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Broad Bandwidth Reading Time Reading Time • Time domain systems transmit multiple frequencies at once. The broader the frequencies the broader the range of geological scenarios that can be handled. This gives an immense advantage over frequency domain helicopter systems • A sharp termination of TD waveform generates high and broad frequency content. • High frequencies improve vertical resolution and mapping ability FDEM www.igs.net.au • Power improves depth penetration but reduces ability to have a sharp termination. So often a trade off with
Symmetry • In-loop or Coincident loop Geometry. • No Asymmetry, no dependence on direction of flying Asymmetric Response, From Fixed wing Symmetric Response, From Helicopter system www.igs.net.au
Page 1 and 2: New Generation Helicopter Time Doma
Page 3 and 4: Numerous Flavours of Airborne EM. P
Page 5: Key factors to development • Desi
Page 9 and 10: Flying Height- Controls benefit of
Page 11 and 12: Key factors to development Technolo
Page 13 and 14: Hoistem MkII • Australian develop
Page 15 and 16: Skytem • Developed in Denmark ini
Page 17 and 18: XTEM • New system in 2009 • Aus
Page 19 and 20: What’s In Common • Low flying
Page 21 and 22: Basemetal Nepean NiS Ground Respons
Page 23 and 24: Mapping Able to replicate very shal
Page 25 and 26: Interpretation & Presentation • C
Page 27 and 28: Whats Next... • HTDEM Systems now

Andrew Boyd New generation helicopter time domain EM systems

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