Since the dawn of GPS, researchers have worked to improve the accuracy of estimated positioning, navigation and timing (PNT) from the receiver-derived pseudorange, carrier-phase and Doppler ...

Ford Fusion equipped with Swift Navigation Skylark Precise Positioning Service at the American Center for Mobility, Ypsilanti, Michigan. On a closed course, as soon as the driver gets behind the wheel ...

Precise Point Positioning (PPP) has long held promise as a standalone, high-accuracy positioning technique, but its slow convergence and complexity in ambiguity resolution have limited widespread use.

New software-only system achieves up to three times greater accuracy than GPS (as precise as ~50 cm) using advanced sensor fusion, with no specialized chips, cameras, or firmware required. Zephr.xyz ...