The Dynamics Explorer Langmuir probe instrument

Details The Dynamics Explorer Langmuir probe instrument The Dynamics Explorer Langmuir probe instrument

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssi.....5..493k&link_type=abstract

Space Science Instrumentation, vol. 5, Dec. 1981, p. 493-502.

Computer Science

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6

Dynamics Explorer 2 Satellite, Electrostatic Probes, Ionospheric Sounding, Satellite-Borne Instruments, Space Plasmas, Adaptive Control, Digital Data, Ionospheric Electron Density, Ionospheric Ion Density, Telemetry, Volt-Ampere Characteristics

Scientific paper

The Dynamics Explorer Langmuir probe instrument (DE-LANG), a spare unit from the Pioneer Venus mission that has been modified to work with the DE spacecraft, is described. Two independent sensors are connected to individual adaptive sweep voltage circuits that continuously track the changing electron temperature and spacecraft potential while autoranging electrometers adjust their gain in response to the changing plasma density. The control signals used in achieving this automatic tracking provide a continuous monitor of the ionospheric parameters without telemetering each volt-ampere curve. In addition, internal data storage circuits permit high-resolution, high-data-rate sampling of selected volt-ampere curves for transmission to the ground to verify or correct the inflight processed data.

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