A NEW TYPE OF PSK ANTI-AMBIGUITY SYSTEM FOR SATELLITE APPLICATIONS
International Telemetering Conference Proceedings / October 10-12, 1972 / International Hotel, Los Angeles, California === In coherent PCM-PSK links the problem of solving the phase ambiguity in the reconstruction of the subcarrier has been traditionally solved by making use of the knowledge of so...
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| Language: | en_US |
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International Foundation for Telemetering
1972
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| Online Access: | http://hdl.handle.net/10150/605392 http://arizona.openrepository.com/arizona/handle/10150/605392 |
| Summary: | International Telemetering Conference Proceedings / October 10-12, 1972 / International Hotel, Los Angeles, California === In coherent PCM-PSK links the problem of solving the phase ambiguity in
the reconstruction of the subcarrier has been traditionally solved by making use of the
knowledge of some part of the transmitted message or by employing MARK-type codes.
After a brief discussion of these well-known methods a new approach is proposed which
makes use of an auxiliary non-ambiguous PSK demodulator based on the estimation of
the sign of the message transitions.
It is shown that no particular requirements on the noise performance of this auxiliary
demodulator is needed to ensure acceptable overall performance of the antiambiguity
system. A particularly simple hardware implementation is indicated and experimental
results are presented for cases of practical interest. |
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