Title :
A Digital Optimalization Device for Directional Charged Particle Measurements in Space Research
Author :
Keppler, Erhard ; Umlauft, Gerhard
Author_Institution :
Max-Planck-Institut fÿr Aeronomie Institut fÿr Stratosphÿren-Physik 3411 Lindau/Harz, Germany
Abstract :
A method is described which allows for synchronisation of periodically repeated spinsynchronous measurements with the spin-independent data readout cycle. The method is selfadapting insofar, as it adjusts itself to any spinrate, which the spacecraft may acchieve. Permanent lock relative to the sun allows for directional measurements of particle fluxes in a coordinate system fixed relative to the sun without additional corrections.
Keywords :
Bit rate; Clocks; Current measurement; Extraterrestrial measurements; Instruments; Particle measurements; Space charge; Space vehicles; Telemetry; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1973.4327336
