Summary

The 10 year development in airborne passive EM technology originally started in 2000, with a receiver design that combined earlier and new system technologies, as well as advanced digital signal processing used in modern MT. This culminated in a lightweight digital AFMAG towed-bird receiver in 2001. Subsequent improvements led to a relatively successful prototype, in 2002. The addition of a base-station in 2004 improved the signal-to-noise and receiver weight, spurring the development of the ZTEM system in 2005, the first successful and commercially avail-able airborne AFMAG system in 30 years. Since then new technologies include the innovative AirMt system in 2009, a Fixed-wing ZTEM system in 2011, and improved mobility in base-station design in 2012.

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