PPK stands for Post-Processing Kinematic,which means GPS Dynamic Post-Processing Differential, lt is a GPS positioning technology that uses the carrier phase forpost-processing differential.

Its system is also composed of a reference station and a mobile station.PPK mea-surement in the field does not require a real-time communication link between themobile station and the reference station.The operation radius is large, and a shortobservation time at the mobile station can compute for centimeter-level accuracy.