Supercorrelation® is the only software-based GNSS technology capable of determining the arrival angle of signals, enabling line-of-sight (LOS) determination and the removal of reflected and non-line-of-sight (NLOS) signals from the positioning solution. It combines sensor fusion, machine learning and signal processing, and is delivered as a software upgrade to existing GNSS receivers. In this resource, we outline how it works to mitigate multipath, boost receiver sensitivity and defend against spoofing.