Computer Science – Sound
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssi.....5..523m&link_type=abstract
Space Science Instrumentation, vol. 5, Dec. 1981, p. 523-534.
Computer Science
Sound
10
Dynamics Explorer 2 Satellite, Electric Fields, Electrical Measurement, Satellite-Borne Instruments, Ionospheric Sounding, Plasma Diagnostics
Scientific paper
Instrumentation has been developed, using the symmetric double-floating probe technique, to make vector electric field measurements from the low-altitude Dynamics Explorer (DE-B) spacecraft. Six 11-m cylindrical antennas are deployed along three orthogonal axes to form the sensor array. The outer two meters of each element are used as sensors, which results in a baseline of 21.4 m for the dc measurement for each axis. Efforts have been made to provide straight antennas and antennas that will not bend from thermal stresses as sun angles are changed. Measurements of the dc electric field will be made 16 times/sec or every half-kilometer along the orbit. Sensitivity will be 0.1 mV/m with a range of + or - 1 V/m. A 20-channel comb filter spectrometer will monitor ac electric fields, concentrating on frequencies below 1 kHz. Electric fields from any single axis or two axes may be sampled by the spectrometer within the range of 1 microvolt/m to 10 mV/m
Bielecki E. A.
Burdick H. F.
Maynard Nelson C.
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