Augmented GPS can offer much better resolution, reliably on the order of a few Decimetres, if you have a reference receiver/transmitter with precisely known location nearby. GPS has very clever tricks up its sleeve if you know how to use them (which I assume the AFU do).
Augmented GPS can offer much better resolution, reliably on the order of a few Decimetres, if you have a reference receiver/transmitter with precisely known location nearby. GPS has very clever tricks up its sleeve if you know how to use them (which I assume the AFU do).