<P> To prevent unauthorized users from using or potentially interfering with the military signal through spoofing , it was decided to encrypt the P - code . To that end the P - code was modulated with the W - code , a special encryption sequence , to generate the Y - code . The Y - code is what the satellites have been transmitting since the anti-spoofing module was set to the `` on '' state . The encrypted signal is referred to as the P ( Y ) - code . </P>
<P> To prevent unauthorized users from using or potentially interfering with the military signal through spoofing , it was decided to encrypt the P - code . To that end the P - code was modulated with the W - code , a special encryption sequence , to generate the Y - code . The Y - code is what the satellites have been transmitting since the anti-spoofing module was set to the `` on '' state . The encrypted signal is referred to as the P ( Y ) - code . </P>
the encrypted version of the p code is the
the encrypted version of the p code is the
P ( Y ) - code
P ( Y ) - code