Monday, September 25, 2017

GAGAN to transform Indian aviation

Hyderabad: Augmentation of global navigation satellite systems (GNSSs) had helped nations worldwide across sectors and more so in aviation. India is implementing Geo Augmented GPS Aided Navigation (GAGAN) to ensure air-space accuracy, reliability, availability and safety, making it the fourth country to implement a Satellite Based Augmentation System (SBAS). The US, Europe, Japan have already implemented it.

GAGAN has been jointly developed by the Airports Authority of India (AAI) and Indian Space Research Organization (ISRO). It comprises a constellation of three geostationary satellites (namely GSAT 8, 10 and 15), three Master Control Centres (two in Bengaluru and one in Delhi), three Uplink Stations and 15 Reference Stations spread across India.

The primary purpose of GAGAN is to enhance the accuracy of the GPS signals and improve its availability, integrity and continuity across India and neighbouring countries. GAGAN is claimed to be the first SBAS in the world certified for approach with vertical guidance operating in the equatorial ionosphere region.
Amber Dubey, partner and India head of Aerospace and Defence at KPMG, told Telangana Today, “GAGAN will benefit aviation sector by reducing fuel consumption by creating direct routes and curved approaches for runways; reducing delays, diversions and cancellations especially during unfavourable weather and low visibility conditions; ensuring optimal utilisation of air-space by way of handling higher number of aircraft movements; reducing noise and air pollution footprint of aircraft.”

The system will play a critical role in promoting regional connectivity. It will provide access to remote runways and air strips. GAGAN Approaches (also known as Localiser Performance with Vertical Guidance (or LPV approaches) will ensure safe landing at airports without any navigation aids. This will give a push to the government’s plan to enhance regional connectivity.
25/09/17 V Phani Raj/Telengana Today
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