f Development of high dipole TDEM systems

In mineral exploration there is a demand for high dipole airborne TDEM systems as the need for delineation of deep conducting targets is increasing rapidly. The strength of the transmitted moment is the far most important parameter when considering the resolution of deep targets. Recent developments in SkyTEM transmitter technology have led to a new generation of high dipole transmitters capable of achieving a fast turnoff while providing magnetic moments up to 1.500.000 NIA. The development process leading to this new generation of transmitters necessitated that numerous compromises were made in order to optimize deep target resolution while maintaining a high level of field efficiency and stability.