Resilient PNT will require multiple alternatives to the singular GPS.

The 50-year-old GPS program is increasingly vulnerable to a proliferation of tools used to jam and spoof the weak and unencrypted civilian signal.

The spacecraft is the Pentagon’s first experimental navigation satellite in nearly 50 years.

WAAS is undergoing a major upgrade and preparing to incorporate the Pentagon’s new L5 civil signal for aviation safety services.

How much has GPS boosted U.S. businesses? The answer is astronomical.