Transmitting and receiving apparatus for full code correlation operation under encryption for satellite positioning system
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Dec 28, 1995
filing date -
Dec 28, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The transmitting and receiving apparatus and method for full code correlation operation under encryption for the Satellite Positioning System (SATPS) are disclosed. The apparatus includes a central station designed to receive SATPS satellites encoded information using a high gain antenna and a delayed correlation receiver. The central station extracts the encrypted satellite information and transmits it to the delayed correlation receiver. The delayed correlation receiver receives the encrypted satellite information using the standard SATPS antenna and performs the full correlation with the encrypted information received from the central station without requiring the secret encryption keys.
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