New quantum sensor could replace satellites for GPS-free navigation

Canadian company SBQuantum is preparing to launch a quantum diamond magnetometer into space on March 29, 2026, via SpaceX’s Transporter 16 rideshare mission. This launch is part of the MagQuest Challenge, an initiative by the US National Geospatial-Intelligence Agency (NGA) aimed at developing new technologies to measure the Earth’s magnetic field more effectively. The Earth’s magnetic field is traditionally monitored through the World Magnetic Model (WMM), which is critical for defense, aviation, and smartphone navigation but relies on aging satellites. SBQuantum’s magnetometer, significantly smaller and more precise than current devices, offers continuous high-quality magnetic field data, potentially replacing the need for these satellites. The quantum sensor has been validated under extreme conditions at NASA’s Goddard Space Flight Center and promises to enhance navigation resilience, especially in environments where GPS signals are unreliable or compromised due to electronic warfare. Beyond updating the WMM, the technology has broad applications in defense, resource exploration, and