Description

Technological developments are critical in assuring safety, precision, and efficiency in the ever-changing world of aviation. The GPS Aided GEO Augmented Navigation (GAGAN) system is one such game-changing invention. GAGAN, developed jointly by the Indian Space Research Organisation (ISRO) and the Airports Authority of India (AAI), has revolutionized airplane navigation. India has completed the first-ever performance-based navigation demonstration for helicopters in Asia, flying from Juhu in Mumbai to Pune using GAGAN satellite technology.

GAGAN Introduction

GAGAN is an Indian Satellite-Based Augmentation System (SBAS) that stands for GPS Aided GEO Augmented Navigation. The Directorate General of Civil Aviation (DGCA) certified it in 2015, marking a key milestone for the Indian aviation sector. Notably, only four space-based augmentation systems exist in the globe, with GAGAN being the first built for India and adjacent equatorial countries.

Uncovering The Benefits

GAGAN benefits go beyond aircraft, providing advantages to other modes of transportation and public services. It improves the GPS system's accuracy, availability, and integrity, allowing users to rely on GPS for all phases of flight, from en route to approach, within the GAGAN service volume. Furthermore, GAGAN improves precision in reporting the aircraft's position, hence contributing to enhanced Air Traffic Management (ATM). This technology is also used in the maritime business, railroads, highways, defense services, the telecommunications industry, security agencies, and personal position locating applications.

GAGAN's Operation

GAGAN is powered by a network of ground stations strategically placed around the country. Indian Reference Stations (INRES) are ground reference stations that collect GPS satellite data. The information obtained is subsequently used by the Indian Master Control Centre (INMCC) to issue correction messages that remedy any signal faults. These correction messages are then uplinked via the Indian Land Uplink Station (INLUS) and broadcast to aircraft receivers via communication satellites that operate on the same frequency as GPS.

Usage In Aviation Operations

The GAGAN system can perform two critical operations: approach with vertical guidance (APV 1) and en-route (RNP 0.1). APV 1 provides precise approaches by giving pilots with vertical guidance throughout landing procedures. The en-route operation, known as Required Navigation Performance (RNP) 0.1, provides correct navigation between airports.

Making Room For Future Innovation

GAGAN has proven to be a game changer in the field of air navigation services due to its remarkable capabilities. It has revolutionized the Indian aviation sector by improving the quality, integrity, and availability of positioning, navigation, and timing information. As GAGAN evolves and proves its usefulness, it lays the groundwork for future developments and advancements in aviation technology.

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