APPARATUS FOR AIRBORNE AND GROUND ELECTROMAGNETIC PROSPECTING AND METHOD THEREOF

摘要

There is described an improvement of the signal-to-noise ratio of an airborne/ground time-domain electromagnetic apparatus and a measuring/interpretation method for the voltage signal recorded. The system comprises: at least one embedded transmitter-receiver structure with at least one large receiver element allowing low system base frequency excitation and discrimination of targets at depths of at least 1 km; wherein the receiver element is positioned throughout the electromagnetic cavity created by transmitter elements whereas no bucking or suspension means are required; a computer network comprising: a microprocessor, a controller from the microprocessor and a host computer controls transmission of primary magnetic field intensities and reception of secondary magnetic field intensities with least 500 kS/s. A method of interpreting of the voltage recorded by receivers elements based on new sensitivity magnetic kernels is disclosed. The fabrication process the apparatus serving for airborne or ground electromagnetic surveying is disclosed.

主权项

1. A system for electromagnetic prospecting comprising:
transmitter coil elements configured to create a magnetic cavity upon transmission of primary magnetic fields from the transmitter coil elements; and a receiver coil element configured to detect secondary magnetic fields, wherein the receiver coil element is positioned substantially at the center of the transmitter coil elements where the magnetic cavity is created.