Title :
The Power Spectrum of PCM/FSK-AM/PM
Author_Institution :
Magnavox Company, Silver Spring, MD, USA
fDate :
7/1/1973 12:00:00 AM
Abstract :
This paper derives the power spectrum of a modulating scheme under consideration by NASA for commanding scientific satellites. In this scheme the commands are frequency-shift keyed onto a subcarrier, then the clock is amplitude modulated onto the resultant. This PCM/FSK-AM waveform is then phase modulated onto a prime carrier. The method used in the paper can be easily extended to derive the spectrums of alternate command waveforms, such as PCM/FSK-AM/ FM, PCM/PSK-AM/PM, etc.
Keywords :
AM signals; FSK signals; Meteorological satellites; Modulation; PCM signals; PM signals; Satellites; Spectral analysis; Amplitude modulation; Clocks; Frequency modulation; Frequency shift keying; Moon; NASA; Object detection; Phase change materials; Phase modulation; Satellites;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1973.1091746
