Japan on Tuesday successfully launched the fourth and final satellite that makes up its terrestrial positioning network system, which will improve the current GPS services and help create a better communications system during a disaster. (Image Source: Japan Aerospace Exploration Agency) Japan on Tuesday successfully launched the fourth and final satellite that makes up its terrestrial positioning network system, which will improve the current GPS services and help create a better communications system during a disaster. (Image Source: Japan Aerospace Exploration Agency)Japan on Tuesday successfully launched the fourth and final satellite that makes up its terrestrial positioning network system, which will improve the current GPS services and help create a better communications system during a disaster. This is the second system that Japan launches as part of its Quasi-Zenith Satellite Systems, which operate at an altitude of between 33,000 and 39,000 km above the earth and whose function is to correct the global navigation satellite system signals for complementary use of the global positioning system (GPS). Japan plans to launch three satellites between 2018 and 2023 that will complement the positioning network and establish the emergency communications system.

Source: Indian Express October 10, 2017 12:45 UTC