Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1988-06-27
1989-08-29
Cangialosi, Salvatore
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342417, 375 1, H04B 7185
Patent
active
048621781
ABSTRACT:
A codeless digital method and apparatus for obtaining measured phase from a plurality of L2 signal transmissions. An intermediate frequency signal is derived by mixing the L2 transmissions with a local oscillator. That signal is hardlimited and employed to terminate the count of a divide-by-32 counter that is clocked by the local oscillator signal and initiated by a signal in synchronization therewith whose frequency is a fraction of the local oscillator. The state of the counter is applied to a four bit latch. The state of the latch, which effectively discards the most significant bit of the count, provides the measured phase of the L2 transmissions from which position can be obtained by reference to the satellite phase and delta range values derived therefrom.
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Brown Alison K.
Sturza Mark A.
Cangialosi Salvatore
Kramsky Elliott N.
Litton Systems Inc.
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