The Precision Positioning System (PPS) is a service supplied from the net of satellites of the system Global Positioning System (GPS) specific for the military use.
The PPS is made up of two marks sendes them to you in the frequencies L1 (1575 MHz) and L2 (1227 MHz), while the Standard Positioning System (SPS) (marks used them in civil within) occupies only the L1.
As far as the pure performances of positioning PPS and SPS they are similar from when in 2000 it has been disabilitata the Selective Availability that degraded marks them civil. Often it is stretched to identify the precision erronamente as only advantage del PPS respect al marks them civil SPS. The characteristics that render the advanced PPS to the SPS comprise instead a greater resistance to disturb and the exclusive feature of I use from part of the single utilizzatori authorizes to you.
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