A biphase shift keying (BPSK), direct sequence, spread spectrum modem for Petite Amateur Navy Satellite (PANSAT).
Fritz, Thomas M.
Ha, Tri T.
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The development of a bi-phase shift keying (BPSK), direct sequence, spread spectrum modem is conducted for the purpose of creating a prototype design to be implemented in the Petite Amateur Navy Satellite (PANSAT). The design discussion includes the hardware used in the functional realization of a working design. The design itself encompasses selection of components and demonstrates (through circuit diagrams and waveforms produced) that the preliminary operational characteristics of a spread spectrum BPSK modulation scheme for PANSAT have been achieved. Limited performance analysis is conducted through IF loop-back testing and provides the intermediate and output demodulator waveforms. The development of the final version operating at the specified radio frequency (RF) is not conducted, but the discussion provides proof of concept.
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