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  • 1
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    Fluxgate magnetometers for outer planets exploration (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The exploration of the interplanetary medium and the magnetospheres of the outer planets requires the implementation of magnetic field measuring instrumentation with wide dynamic range, high stability, and reliability. The fluxgate magnetometers developed for the Pioneer 11 and Mariner-Jupiter-Saturn missions are presented. These instruments cover the range of .01 nT to 2 million nT with optimum performance characteristics and low power consumption.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Low-power portable geophysical data acquisition system and its use in geomagnetic measurements (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A low-power portable data acquisition system presently in use for geomagnetic measurements is described. The system is composed of a data-processing system containing a low-power microprocessor, a 9-track digital tape recorder, and a rechargeable battery pack. The magnetometer is a low-power three axis fluxgate design. Under program control the data processing system keeps track of time of day and date, samples three analog magnetometer outputs at intervals of either 0.4 or 2 s, digitizes the data to 15-bit resolution, and, depending upon relative magnetic activity, decides upon data compression to increase the tape storage capacity. It also monitors and records internal voltages and provides self-checking functions which may be monitored through a visual readout on the control panel. The system is mounted in a rugged, weather-tight carrying case suitable for use outdoors with minimal protection. The system, including magnetometer, uses 1.6-W power and can store 5.7 Mbytes of data.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: IEEE Transactions on Geoscience and Remote Sensing; GE-19; July 198
    Format: text
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  • 3
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    The Magsat precision vector magnetometer (1980)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: This paper examines the Magsat precision vector magnetometer which is designed to measure projections of the ambient field in three orthogonal directions. The system contains a highly stable and linear triaxial fluxgate magnetometer with a dynamic range of + or - 2000 nT (1 nT = 10 to the -9 weber per sq m). The magnetometer electronics, analog-to-digital converter, and digitally controlled current sources are implemented with redundant designs to avoid a loss of data in case of failures. Measurements are carried out with an accuracy of + or - 1 part in 64,000 in magnitude and 5 arcsec in orientation (1 arcsec = 0.00028 deg).
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Johns Hopkins APL Technical Digest; 1; July-Sep
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    NASA TECHNICAL REPORTS
  • 4
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    The IMP-H ion composition experiment (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A compact mass energy spectrometer to be flown aboard the IMP-H spacecraft is described. Scientific aims include determination of the relative and absolute fluxes of He-4(2+), He-4 (+), 0(6+), and 0(7+), and He-3(2+).
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-65778 , X-692-71-385
    Format: application/pdf
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  • 5
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    Two axis fluxgate magnetometer Patent (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Fluxgate magnetometer for measuring magnetic field along two axes using one sensor
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: application/pdf
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  • 6
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    A miniature two-axis fluxgate magnetometer (1969)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Miniature fluxgate magnetometer for sounding rocket measurements of two orthogonal components of external magnetic field, predicting performance by linear mathematical model
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: INST. OF ELECTRICAL AND ELECTRONICS ENGINEERS, ANNUAL INTERNATIONAL GEOSCIENCE ELECTRONICS SYMPOSIUM, 1ST; Apr 16, 1969 - Apr 18, 1969; WASHINGTON, DC|; ADEMIE DES SCIENCES
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  • 7
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    The Pioneer 11 high-field fluxgate magnetometer (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The High Field Fluxgate Magnetometer Experiment flow aboard the Pioneer 11 spacecraft to investigate Jupiter's magnetic field is described. The instrument extends the spacecraft's upper limit measurement capability by more than an order of magnitude to 17.3 gauss with minimum power and volume requirements.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-70467 , X-692-73-268
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  • 8
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    A miniature two-axis fluxgate magnetometer (1970)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Two-axis fluxgate miniature magnetometer designed for sounding rockets with mathematical models and Fourier analysis of output waveforms
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TN-D-5325 , G-944 , GEOSCI. ELECTRON. SYMP. OF THE INST. OF ELEC. AND ELECTRON. ENGR.; Apr 01, 1969
    Format: application/pdf
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