RASA is a technology that can be integrated into a GNSS receiver to make the GNSS receiver more robust. It is a spoofing detection algorithm used to detect counterfeit OS signals received by a GNSS receiver on a moving platform. The RASA solution is a software embedded application add-on to existing Rockwell Collins GNSS receivers with the goal of ensuring the end product is International Traffic in Arms Regulation (ITAR) free.