Computer Science – Performance
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..441v&link_type=abstract
In ESA, Frequency and Time Forum p 441-444 (SEE N93-24978 09-70)
Computer Science
Performance
Automatic Frequency Control, Data Links, Frequency Converters, Frequency Synthesizers, Relay Satellites, White Noise, Bandpass Filters, Channels (Data Transmission), Extremely High Frequencies, Feasibility, Phase Locked Systems, Selection, Tuning
Scientific paper
The feasibility of a Tunable Frequency Converter (TFC) concept envisaged on board of the Data Relay System Satellites (DRSS), which requires a synthesizer with state of the art phase noise performance that is locked to a common, ultrastable oscillator, is addressed. The DRSS Ka band communication links are discussed with reference to the DRS system and the TCF. The aim is to provide an autonomous TCF unit demonstrating that the advanced channel selection scheme, with all frequency translations locked to one common reference, is feasible. Concept tradeoff and key elements of the frequency synthesizer are outlined. White noise filtering and reference frequency selection of the reference generator are discussed. The TFC unit allows payload reconfigurability via the frequency setting. The concept is extendable to all TFC types on board of the DRSS.
Devlieghere J.
Vanloock P.
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