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Tag: GPS

Understanding GPS: The Nuts and Bolts

SAME-FREQUENCY BROADCASTS  While every GPS satellite has been assigned a unique encoding signature, the Code Division Multiple Access (CDMA) standard is used across the board to unify the scheme. Because CDMA allows for the concurrent transmission of data over a single channel, multiple satellites can send out information to different users on the same bandwidth at the same time. To limit interference, each satellite signal is sent across a widened spectrum. CDMA for GPS is split into two coding schemes–one is used by the public, while the other is reserved for U.S. military...

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