▎EW Mesh
Alternative Positioning, Navigation, and Timing/ Alt-PNT
Non-GNSS sources of PNT used when satellite navigation is denied or degraded.
Definition
Alternative PNT covers terrestrial signals of opportunity, vision-based navigation, celestial, magnetic, and chip-scale atomic clocks that supply positioning and timing when GNSS is unavailable. In contested airspace, autonomous CCAs are expected to fuse multiple Alt-PNT sources with INS to maintain mission accuracy.
Reference attributes
- Examples
- Visual SLAM, celestial, eLoran, CSAC
- Pairs with
- Inertial navigation, GNSS-AJ
Related terms
#pnt