Description: GPS signals originating from Earth orbiters have been tracked up to half the distance to the Moon, but analyses indicate that signals from GPS and ESA’s Galileo likely can be tracked the whole way. Researchers aim to validate that GPS and Galileo signals can be used for lunar/cislunar positioning, navigation, and timing (PNT). They will fly two different multi-GNSS receivers on a suborbital flight and use the data to down-select one receiver to fly on a lunar lander and/or cislunar spacecraft.

Benefits: • Validating: Supports efforts to prove that GPS and Galileo signals can be used for navigation all the way to the Moon • Useful: Relevant for NASA, international, and commercial partners • Enabling: Stands to improve PNT for lunar and cislunar missions