Airborne Low-Frequency Electromagnetic System EM-4H

Due to low weight, low power requirements, and compact design of the system it can be installed on light helicopters and fixed-wing aircrafts with ease;

Nearly all functions are automated in order to make the EM-4H system very simple to operate. From our experience, it takes no more than 10-14 days to train technicians to conduct surveys confidently with EM-4H;

The EM-4H software, includes navigation and flight planning tools that automatically directs the aircraft to a start point, develops the optimum flight path and gives real time course corrections along the survey route to the pilot through a front mounted indicator. This software coupled with the GPS receiver data provides quality of location and flight height data good enough to conduct surveys with line spacing of 50 m or less;

Average productive speed of surveying is about 100 kilometers per hour;

EM-4H measures full response, i.e. inphase and quadrature components of the secondary field, with the accuracy about 1% for the averaging interval about 0.5 sec. This accuracy was achieved by the use of unique method of continuous transmitter-receiver geometry monitoring

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This accuracy was achieved by the use of unique method of continuous transmitter-receiver geometry monitoring;

To obtain stable, nearly noise-free data modern signal processors, proprietary algorithms to remove aircraft influence, and effective mathematical methods of digital filtering are used.