NASA NTRS · 19690000582
Data processing method for a weak, moving telemetry signal
Abstract
Method of processing data from a spacecraft, where the carrier has a low signal-to-noise ratio and wide unpredictable frequency shifts, consists of analogue recording of the noisy signal along with a high-frequency tone that is used as a clock to trigger a digitizer.
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Kendall, W. B., Levy, G. S., Nixon, D. L., Panson, P. L.. 1969-11-01. Data processing method for a weak, moving telemetry signal. https://ntrs.nasa.gov/citations/19690000582
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