[Diana Furchtgott-Roth, DOT deputy assistant secretary for research and technology, speaks to the Civil GPS Service Interface Committee (CGSIC) meeting in Miami. Photo: Dee Ann Divis]
Blog Editor’s Note: Another step in the process of the U.S. acquiring the backup for GPS mandated by Presidential Order and law.
Note that the law requiring a system to backup GPS timing by December 2020 requires a terrestrial system. The one mandating a demonstration of GPS backup technologies does not require those tested to be terrestrial.
While other space systems can and do augment GPS/GNSS, all space systems tend to share the same set of vulnerabilities from jamming, coronal mass ejections, etc.
In the words of a friend of ours at a government space organization “It doesn’t make sense to backup space with space.”