Electromagnetic receiver tracking and real-time calibration system and method
AssigneeCgg Services SAS
InventorsPhilip Miles, Jason Berringer
Life of this patent
Estimating the term…
Abstract
An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a survey EM transmitter for generating survey EM signals within a first frequency range; a calibration EM transmitter for generating a calibration signal; a receiver section, including a receiver housing and a receiver, that measures both the survey EM signals and the calibration signal; and a calibration device connected to the calibration EM transmitter and to the receiver, the calibration device configured to control a frequency and waveform of the calibration signal. The calibration device is further configured to calculate a response function of the receiver, based on the calibration signal.
Claims20
An electromagnetic (EM) system for measuring EM signals, the EM system comprising:
- a survey EM transmitter for generating survey EM signals within a first frequency range;
- a calibration EM transmitter for generating a calibration signal;
- a receiver section, including a receiver housing and a receiver, that measures both the survey EM signals and the calibration signal;
- and
- a calibration device connected to the calibration EM transmitter and to the receiver, the calibration device configured to control a frequency and waveform of the calibration signal,
- wherein the calibration device is further configured to calculate a response function of the receiver, based on the calibration signal.
An electromagnetic (EM) system for measuring EM signals, the EM system comprising:
- a transmitter section;
- a receiver section;
- a calibration device configured to control a frequency and waveform of a calibration signal;
- and
- a tow assembly connecting the transmitter section and the receiver section to an aircraft,
- wherein the transmitter section includes a survey EM transmitter for generating survey EM signals within a first frequency range, and a calibration EM transmitter for generating the calibration signal,
- wherein the receiver section includes a receiver housing and a receiver that measures both the survey EM signals and the calibration signal, and
- wherein the calibration device is further configured to calculate a response function of the receiver, based on the calibration signal.
A method for calibrating an electromagnetic (EM) receiver, the method comprising:
- generating a calibration signal with a calibration device;
- applying the calibration signal to a receiver;
- measuring a voltage across the receiver to determine a response function of the receiver;
- generating survey EM signals with a survey EM transmitter;
- measuring with the receiver the survey EM signals;
- and
- calibrating the receiver based on the response function.
Dependencies are inferred from the claim text.