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Friday, June 25, 2021

India gets its own GPS

IRNSS-1G is the seventh of the Indian Regional Navigation Satellite System (IRNSS). Like its six predecessors, it had a lift-off mass of 1,425 kg.


Updated: November 24, 2017 2:21:23 pm
IRNSS, IRNSS 1-G satellite, 1-G satellite, Indian Regional Navigation Satellite System, IRNSS mission, IRNSS member, explained news, explained, IE explained, indian express explained The PSLV C-33 rocket lifts off from the First Launch Pad of the Satish Dhawan Space Centre, Sriharikota, at 12.50 pm on Thursday, carrying the IRNSS-1G navigation satellite. PTI

The IRNSS 1-G satellite, launched on Thursday, is the seventh member of the Indian Regional Navigation Satellite System (IRNSS), completing a constellation of satellites in geosynchronous and geostationary orbits that will give Indian civilian and military users, and their partners, access to a dedicated satellite navigation system that will not be dependent on foreign governments or suppliers.

The total cost of the IRNSS mission 1,420 crore.

Schedule of Launches, 2013-16

GPS

Mission Basics

The Satellite

IRNSS-1G, seventh of the Indian Regional Navigation Satellite System (IRNSS). Like its six predecessors, had a lift-off mass of 1,425 kg. All 7 satellites are configured identically.

The Vehicle

Polar Satellite Launch Vehicle, in its 35th (and 34th consecutively successful) flight. All IRNSS launches used the most powerful ‘XL’ version of PSLV, equipped with 6 strap-ons, each with 12 tonnes of propellant.

The Orbits

3 of the 7 satellites will be located in suitable orbital slots in geostationary orbit; remaining four will be in geosynchronous orbits with the required inclination and equatorial crossings in two different planes. IRNSS-1G was placed in a Sub-Geosynchronous Transfer Orbit (Sub-GTO) about 20 minutes after lift-off.

IRNSS, IRNSS 1-G satellite, 1-G satellite, Indian Regional Navigation Satellite System, IRNSS mission, IRNSS member, explained news, explained, IE explained, indian express explained

The Service

IRNSS will provide Standard Positioning Service (SPS) to all users, and an encrypted Restricted Service (RS) to authorised users. IRNSS will provide a position accuracy better than 20 metres in the primary
service area.

The Applications

Terrestrial, aerial and marine navigation; disaster management; vehicle tracking and fleet management; integration with mobile phones; precise timing; mapping and geodetic data capture; terrestrial navigation aid for hikers and travellers; visual and voice navigation for drivers.

The Service Areas

GPS1ed

* The regional navigation satellite system will provide accurate position information service to users in India and the region, extending up to 1,500 km from its boundary, which is its Primary Service Area. Beyond that will lie an Extended Service Area, that will extend up to the edges of the area enclosed by the rectangle imagined by latitudes 30 degrees South and 50 degrees North, and longitudes 30 degrees East and 130 degrees East.

Source: ISRO

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