MULTI-SENSOR SYSTEM FOR AIRBORNE GEOPHYSICAL PROSPECTING AND METHOD

    公开(公告)号:US20200284939A1

    公开(公告)日:2020-09-10

    申请号:US16880360

    申请日:2020-05-21

    Inventor: Philip MILES

    Abstract: A multi-sensor electromagnetic (EM) system and method for measuring gradients of EM signals. The multi-sensor EM system includes a frame; a transmitter device attached to the frame and configured to generate a primary EM field; a receiver device attached to the frame and configured to record a secondary EM field generated by the earth after being excited by the primary EM field; and a gradient sensor device attached to the frame and configured to record a gradient of the secondary EM field.

    LOW-FREQUENCY RECEIVER COIL SUSPENSION SYSTEM

    公开(公告)号:US20190265380A1

    公开(公告)日:2019-08-29

    申请号:US16410307

    申请日:2019-05-13

    Inventor: Philip MILES

    Abstract: An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a platform; a coil for measuring EM signals; and first to third suspension mechanisms located between the platform and the coil so that the coil oscillates relative to the platform, and the first to third suspension mechanisms attenuate motion induced noise introduced by towing the receiver system above ground.

    METHOD AND SYSTEM FOR BROADBAND MEASUREMENTS USING MULTIPLE ELECTROMAGNETIC RECEIVERS

    公开(公告)号:US20170315255A1

    公开(公告)日:2017-11-02

    申请号:US15647735

    申请日:2017-07-12

    CPC classification number: G01V3/165

    Abstract: An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a frame; a first EM receiver attached to the frame and configured to measure the EM signals within a first frequency range; and a second EM receiver attached to the frame and configured to measure the EM signals within a second frequency range. Corresponding axes of the first and second EM receivers are substantially parallel to each other.

    SYSTEMS AND METHODS FOR ACTIVE CANCELLATION OF TRANSIENT SIGNALS AND DYNAMIC LOOP CONFIGURATION

    公开(公告)号:US20180217288A1

    公开(公告)日:2018-08-02

    申请号:US15933879

    申请日:2018-03-23

    CPC classification number: G01V3/28

    Abstract: A method and system for active cancellation of transient signals and dynamic loop configuration for geophysical exploration is disclosed. The method includes controlling a transmitter to transmit a waveform in a frequency spectrum during an on-time. The transmitter includes a plurality of turns of wire. The method also includes controlling a plurality of switches to direct an electrical signal through the plurality of turns of wire. The plurality of switches electrically coupled to the plurality of turns of wire. The method further includes controlling a switch of the plurality of switches to direct a first portion of a transient current in an opposite direction from a direction of a second portion of the transient current during an off-time.

    MULTI-SENSOR SYSTEM FOR AIRBORNE GEOPHYSICAL PROSPECTING AND METHOD

    公开(公告)号:US20180180758A1

    公开(公告)日:2018-06-28

    申请号:US15900915

    申请日:2018-02-21

    Inventor: Philip MILES

    CPC classification number: G01V3/165 G01V3/16

    Abstract: A multi-sensor electromagnetic (EM) system and method for measuring gradients of EM signals. The multi-sensor EM system includes a frame; a transmitter device attached to the frame and configured to generate a primary EM field; a receiver device attached to the frame and configured to record a secondary EM field generated by the earth after being excited by the primary EM field; and a gradient sensor device attached to the frame and configured to record a gradient of the secondary EM field.

    MULTI-SENSOR SYSTEM FOR AIRBORNE GEOPHYSICAL PROSPECTING AND METHOD

    公开(公告)号:US20210181367A1

    公开(公告)日:2021-06-17

    申请号:US17182399

    申请日:2021-02-23

    Inventor: Philip MILES

    Abstract: A multi-sensor electromagnetic (EM) system and method for measuring gradients of EM signals. The multi-sensor EM system includes a frame; a transmitter device attached to the frame and configured to generate a primary EM field; a receiver device attached to the frame and configured to record a secondary EM field generated by the earth after being excited by the primary EM field; and a gradient sensor device attached to the frame and configured to record a gradient of the secondary EM field.

    ELECTROMAGNETIC RECEIVER TRACKING AND REAL-TIME CALIBRATION SYSTEM AND METHOD

    公开(公告)号:US20190285766A1

    公开(公告)日:2019-09-19

    申请号:US16419322

    申请日:2019-05-22

    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.

    SYSTEMS AND METHODS FOR MULTIPLE BANDWIDTH ELECTROMAGNETIC GEOPHYSICAL EXPLORATION

    公开(公告)号:US20190187319A1

    公开(公告)日:2019-06-20

    申请号:US16273256

    申请日:2019-02-12

    CPC classification number: G01V3/16 G01V3/17

    Abstract: An electromagnetic geophysical exploration system includes a first transmitter-receiver pair that includes a first transmitter configured to transmit a first waveform in a first spectrum and a first receiver configured to sense signals in the first spectrum; and a second transmitter-receiver pair that includes a second transmitter configured to transmit a second waveform in a second spectrum, the second spectrum having a frequency higher than a frequency of the first spectrum, and a second receiver configured to sense signals in the second spectrum; and a control portion. The control portion controls the first transmitter to transmit the first waveform with a first given strength or shape in the first spectrum, and controls the second transmitter to transmit the second waveform with a second given strength or shape in the second spectrum, after a specified time delay.

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