US Testing Quantum Navigation Aboard Secretive Military Space Plane

2025-08-15 02:01:28

(MENAFN- Asia Times) A US military space plane, the X-37B orbital test vehicle, is due to embark on its eighth flight into space on August 21, 2025. Much of what the X-37B does in space is secret. But it serves partly as a platform for cutting-edge experiments.

One of these experiments is a potential alternative to GPS that makes use of quantum science as a tool for navigation: a quantum inertial sensor.

Satellite-based systems like GPS are ubiquitous in our daily lives, from smartphone maps to aviation and logistics. But GPS isn't available everywhere. This technology could revolutionise how spacecraft, airplanes, ships and submarines navigate in environments where GPS is unavailable or compromised.

In space, especially beyond Earth's orbit, GPS signals become unreliable or simply vanish. The same applies underwater, where submarines cannot access GPS at all. And even on Earth, GPS signals can be jammed (blocked), spoofed (making a GPS receiver think it is in a different location) or disabled – for instance, during a conflict.

This makes navigation without GPS a critical challenge. In such scenarios, having navigation systems that function independently of any external signals becomes essential.

Traditional inertial navigation systems (INS), which use accelerometers and gyroscopes to measure a vehicle's acceleration and rotation, do provide independent navigation, as they can estimate position by tracking how the vehicle moves over time.

Think of sitting in a car with your eyes closed: you can still feel turns, stops and accelerations, which your brain integrates to guess where you are over time.

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