Spreading rates 1 and 3, respectively, correspond to chip rates
of 1.2288 Mcps (mega chips per second) and 3.6864 Mcps.
WCDMA uses 5-MHz channels and CDMA based on direct sequence spread spectrum (DSSS) with a 3.84-Mc/s chip rate
A second characteristic that may be exploitable is the constant chip rate
of the spreading modulation.
The width of the PN modulated signal in the frequency region depends on the chip rate
of the PN modulator, and the larger the chip rate
, the wider the spectrum of the modulated signal.
Other features include flexible interprocessor communications allowing the developer to specify a DSP for chip rate
or symbol rate processing and high bandwidth datapaths offering up to 6Gb/s data rates to support multiple receivers.
The C/A (Clear Acquisition) code is a sequence of 1,023 pseudorandom, binary, biphase modulations on the GPS carrier at a chip rate
of 1.023 MHz; the C/A code is sometimes referred to as the "civilian code."