[time-nuts] L1/L2 GPS Receiver

[Jim Lux]

On 1/17/14 10:17 AM, Dennis Ferguson wrote:
>
> On 17 Jan, 2014, at 11:43 , Michael Perrett <mkperrett at gmail.com> wrote:
>> Magnus, I believe that he is referencing the the new L2 C/A code, which is
>> not protected. Reference
>> http://www.gps.gov/systems/gps/modernization/civilsignals/
>
> It would be nice to have a receiver for that when they turn it on, but I
> don't think that's what he wants.  The observables used for PPP processing
> are L1 and L2 carrier phase.  You don't need a receiver capable of decoding
> the P(Y) code but you do need a receiver capable of receiving the full
> bandwidth of its carrier on both L1 and L2 and tracking the phase.
>
> The commercial receivers which do this seem to cost dearly.
>

The actual hardware isn't expensive, I would think that someone has a 
software receiver for this.