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View Count: 267 |  Publish Date: April 07, 2014
India's GPS alternative launches second satellite

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India has launched its second navigation satellite, the daintily-named IRNSS-1B.
IRNSS is an acronym for “Indian Regional Navigation Satellite System” and the name is noteworthy because the planned seven-satellite constellation is intended to provide location services within India and in an “extended service area” around the nation, rather than offering the global coverage other satnav systems promise (alone or in collaboration).
The local focus is because India wants IRNSS all to itself. That position is understandable: the USAs GPS, Russias GLONASS, Europes Galileo and Chinas Beidou are all controlled by states that could conceivably jam the systems signals. With India perennially wary of its neighbours (and owning nuclear weapons), possessing its own satellite navigation constellation has obvious strategic importance. Limiting its effective range also shows the world that the system isnt a sign of global ambition, but lets Indias neighbours know what it will soon be capable of.
The footprint for Indias Regional Navigation Satellite System
On a happier note, local companies will have an indigenous navigation platform to play with, which probably cant hurt but may mean complications for global device-makers.
India is trumpeting the launch for another reason: it marks the 25th time in a row the nations Polar Satellite Launch Vehicle has done the business. Indeed, only its first flight failed. That all seven INRSS craft are expected to be aloft by the end of 2015, at a combined cost of under $US300m, is also noteworthy: India surely would not mind a slice of the global space business.
IRNSS-1B is currently in orbit with an inclination of 27 degrees, a perigee of 11,668 km and an apogee of 35,924 km, thanks to two orbital manoeuvres. A further three adjustments to the satellites orbit are planned to ensure it nestles in an optimally useful position. ®

Time: 7:46  |  News Code: 396725  |  Site: The Register
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