Digital range turn-around for tracking, telemetry and control transponder
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United States of America Patent
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Feb 28, 1995
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N/A
app pub date -
Nov 26, 1993
filing date -
Nov 26, 1993
priority date (Note) -
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Abstract
A transponder demodulates a phase modulated ranging signal transmitted by an earth station. The transponder converts the analog ranging signal to digital form. The digital ranging signal is demodulated into its I and Q phase components. Next the demodulated ranging signal is re-modulated and digitally combined with a selected transmit frequency. Then the re-modulated ranging signal is converted from digital to analog form. The ranging signal is transmitted to the earth station.
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