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Noise Evaluation of a Commonly Used Fluxgate Magnetometer for One-second Data

Motivation. INTERMAGNET 1-Second data standard almost defined: BGS operates 7 observatories comprising 13 fluxgate magnetometer systemsWhat are the current capabilities of our instrumentation ? resolution and frequency responseEstablish method for evaluating noise of a fluxgate magnetometer unde

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Noise Evaluation of a Commonly Used Fluxgate Magnetometer for One-second Data

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    1. Noise Evaluation of a Commonly Used Fluxgate Magnetometer for One-second Data T J Shanahan and C W Turbitt SO TODAY, ON THE SAME THEME OF 1 SECOND DATA, I’M GOING TO TALK ABOUT A METHOD I USED TO MEASURE THE NOISE IN A FLUXGATE MAGNETOMETER AND HOW THIS PROCESS HIGLIGHTED SOME CLEAR ADVANTAGES IN USING SIGMA-DELTA DIGITISERS FOR DATA ACUISITIONSO TODAY, ON THE SAME THEME OF 1 SECOND DATA, I’M GOING TO TALK ABOUT A METHOD I USED TO MEASURE THE NOISE IN A FLUXGATE MAGNETOMETER AND HOW THIS PROCESS HIGLIGHTED SOME CLEAR ADVANTAGES IN USING SIGMA-DELTA DIGITISERS FOR DATA ACUISITION

    2. Motivation INTERMAGNET 1-Second data standard almost defined: BGS operates 7 observatories comprising 13 fluxgate magnetometer systems What are the current capabilities of our instrumentation – resolution and frequency response Establish method for evaluating noise of a fluxgate magnetometer under normal operating conditions or “under load” Establish method for evaluating frequency response of fluxgate with 1-Second standards in mind Highlight methods of filtering with regard to the new standard THE MOTIVATION FOR UNDERTAKING THIS WORK HAS BEEN DRIVEN BY THE INCREASING MOMENTUM IN THE MOVE TO INTERMAGNET STANDARD FOR 1 SECOND DATA THAT WHICH SETS THE RESOLUTION AT 0.01 NT WITH THIS IN MIND WE DECIDED TO INVESTIAGE THE CURRENT CAPABILITIES OF OUR INSTRUMENTATION AS BGS OPERATES 13 FLUXGATE MAGNETOMETERS WE WERE INTERESTING IN THE IDEA OF BEING ABLE TO MODIFY OUR EQUIPMENT TO MEET THE NEW STANDARD RATHER THAN STARTING WITH NEW INSTRUMENTATION THE MOTIVATION FOR UNDERTAKING THIS WORK HAS BEEN DRIVEN BY THE INCREASING MOMENTUM IN THE MOVE TO INTERMAGNET STANDARD FOR 1 SECOND DATA THAT WHICH SETS THE RESOLUTION AT 0.01 NT WITH THIS IN MIND WE DECIDED TO INVESTIAGE THE CURRENT CAPABILITIES OF OUR INSTRUMENTATION AS BGS OPERATES 13 FLUXGATE MAGNETOMETERS WE WERE INTERESTING IN THE IDEA OF BEING ABLE TO MODIFY OUR EQUIPMENT TO MEET THE NEW STANDARD RATHER THAN STARTING WITH NEW INSTRUMENTATION

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