Abstract: A seismic source signal generator having feed-forward control uses pressure, current, and/or valve position sensors to detect system component parameters. Initial and operating parameters are processed during source operation to remove, partially or wholly, harmonic distortions from the seismic source signal.

Abstract: A method, apparatus and system for acquiring seismic data is disclosed that in one aspect receives a seismic signal detected by at least one sensor in response to a seismic energy signal generated by a source at a selected location at a data acquisition unit in data that is in data communication with the sensor, receives at least one parameter of the source and/or receiver at the data acquisition unit; and generates a data block at the data acquisition unit having data representative of the received seismic signal and a header that contains data representative of the at least one parameter of the source and/or receiver. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A seismic source signal generator having feed-forward control having pressure, current and/or valve position sensors that detect system component parameters. Initial and operating parameters are processed during source operation to remove, partially or wholly, harmonic distortions from the seismic source signal.

Abstract: A method of transmitting data between a remote unit and a plurality of field service units placed over a region of interest, each field service unit acquiring seismic data from at least one seismic receiver in a plurality of seismic receivers placed in the region of interest is provided that, in one aspect, may include: specifying a data transmission time period having a fixed continuous time length for transmission of data between the remote unit and each field service unit; dividing the data transmission time period into a plurality of time slots, each time slot having a fixed time length; and transmitting data from the remote unit to each field service unit during at least one of the time slots and from each field service unit to the remote unit during at least one another time slot. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.