SERCEL

Electronic apparatus for field seismic prospecting; apparatus for controlling artificial seismic shocks, apparatus for collecting seismic signals, for analog pre-processing of such signals, for analog to digital conversion thereof, for recording the digital data, and for playback of seismic signals for such digital data; digital processing apparatus of the recorded digital data; radio navigation systems-namely, transmitters, receivers, transmitters-receivers, receivers-transmitters and associated apparatus for ambiguity resolution and/or corrections; displaying or processing apparatus for association to radio navigation receivers; electronic position and motion detectors