PARIS — An Iridium-enabled startup offering L-band positioning, navigation and timing service as a backup to fragile GPS signals said it has already attracted enough U.S. government business to quadruple its revenue in 2019, with much more to come.

Satelles, whose initial service began in 2016, is taking initial aim at the U.S. Defense, Homeland Security and Energy departments to provide GPS backup for military and critical-infrastructure managers.

Satelles uses the Iridium Next constellation of mobile communications satellites in low Earth . . .

To view the entire article, become a subscriber!