Mitsubishi Heavy Industries

Japan deployed the first of three navigation satellites it intends to launch in the next year Thursday, sending a 4.4-ton spacecraft on the way to an high-altitude orbital perch on top of an H-2A rocket to improve positioning data for drivers, hikers and government agencies in East Asia.

A Japanese H-2A rocket is set for launch Thursday with the country’s second navigation satellite, growing a network of beacons in the sky to give emergency responders, security forces and the public more accurate positioning and timing signals in Japan and neighboring regions.