ST2276
Scientech Technologies Pvt. Ltd.
18
Figure 11
Figure 12
When the GPS signals are received by the user of GPS, the PRN-code and GPS data
have to be separated. This is done by again mixing the received signal with a locally
generated PRN-code. This must be the same PRN-code which has been generated in
the satellite. It is important that equal parts of the code are mixed with each other.
Therefore the code generated in the receiver must be shifted in time until the two
codes are exactly synchronous. In this special case when the receiver ‘locks’ (also
HiK-Consulting