NASA NTRS · 19700000256
Equipment-tolerant range code demodulation method - A concept
Abstract
Demodulation loop of automatic range-measuring system uses reference signal wave of locally generated pseudo-noise plus square wave of same period as the clock. Phase instabilities in IF amplifiers appear only as gain changes in the loop, and do not cause errors in range determination.
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Welter, N.. 1970-10-01. Equipment-tolerant range code demodulation method - A concept. https://ntrs.nasa.gov/citations/19700000256
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