GAGAN

FOP

September 2010

Raytheon

GAGAN Supports PBN for India

Page 3

GAGAN GEO Predicted Footprints

GSAT-8

GSAT-10

GAGAN GEO satellites will be positioned to provide dual GEO

Coverage over Indian FIR

Page 4 10/28/2011

GAGAN Architecture

WRE A

WRE B

WRE C

WRS 1 - 38

WRE A

WRE B

WRE C

WRS 1 - 38

WRE A

WRE B

WRE C

INREE A

INREE B

INREE C

INRES 1-15

Correction

Processor 1

Correction

Processor 2 Safety

Processor 2

Safety

Processor 1

Co

mp

ara

tor

Correction

Processor 1

Correction

Processor 2 Safety

Processor 2

Safety

Processor 1

Co

mp

ara

tor

2 -Indian Master Control Centers (INMCC)

GPS 2-GEO GSAT8, GSAT 10

L1 GPS

Signal

User

L1 & L5

Signal

L1 GEO

Signal w/

GAGAN

Message

GAGAN

Message

L1 & L2 GPS Signal

L1 & L5 GEO Signal

Sig

na

l

Ge

ne

rato

r INUS

Receiver

INLUS

Processor

Com

pa

rato

r

3-Indian Land Uplink Station (INLUS)

Message

Processor 2

Message

Processor 1 L2 GPS

Signal

Dual Ring

Data Communication

Sub System (DCSS)

One in Delhi broadcasting to GSAT8

Two in Bangalore broadcasting to GSAT8 and GSAT10

Both in Bangalore

Each INMCC includes an Operations and Maintenance Subsystem (OMSS)

Indian Reference Station

Page 5

RAYTHEON VISION ALIGNED WITH FUTURE INDIAN ANS

GAGAN supports India’s

vision for ANS providing

satellite based navigation

service to aircrafts

Page 6

OUR VISION LEADS TO THE PBN BASED INDIAN ATM

GAGAN brings integrity

and accuracy to the ADS-

B service planned for

India’s Vision for

Surveillance Services

Page 7

Satellite based technology to replace ground based aids for air

traffic and navigation

Provides an accurate position with integrity for ADS-B service

needed for surveillance

ADS-B relies on a position source to broadcast aircraft location

GAGAN adds accuracy and integrity to the position that is

broadcasted

GAGAN facilitates India’s vision for Performance Based Navigation

Performance Based Navigation relies on aircraft’s own capability to achieve

specified performance level

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INVESTMENTS MADE FOR GAGAN ARE SYNERGISTIC AND

NECESSARY FOR PBN

GAGAN SUPPORTS INDIA’S VISION FOR NAVIGATION

AND SURVEILLANCE

Page 8

Alert Limit Evolution for Aircraft

Precision Approaches

10/28/2011

APV 1

250 ft DH

50m VAL, 40m HAL

Page 9

REDUCED AIRCRAFT SEPARATION WITH GAGAN IN

NON RADAR AIRSPACE

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INCREASED PROXIMITY OF AIRCRAFT REQUIRES GAGAN INTEGRITY AND

PROMOTES HIGHER TRAFFIC ALONG PREFERRED ROUTES

Page 10

ATC Backroom Display

GAGAN SMS Displays in ATC backroom provide current ionospheric conditions

to inform ATC to adjust aircraft separations

Page 11

Benefits to ATC Increased Accuracy and Integrity in the airspace for the cost of a single

receiver installed on the aircraft

– Reduced separation between aircrafts to increase traffic density safely in the air

space

Allows aircraft to fly directly from one airport to another, as opposed to

following routes based on ground-based signals.

– Cuts route distances considerably in some cases, saving both time and fuel

Aligns with performance based navigation objective

– Enables pilots to safely fly at lower altitudes, especially in areas where terrain of

varying elevation affects ground-based systems

Reduces air traffic infrastructure costs

– SBAS landing procedure provides comparable landing capability

Seamless navigation across regional boundaries as GAGAN will be

compatible with other SBAS systems (MSAS, EGNOS and WAAS)

Page 12 10/28/2011

Time To Alarm

GAGAN continuously monitors both itself and the GPS satellites

In the event of a failure, an alarm message is sent within 6.2 seconds

Failures which result in an alarm: – GPS clock failure

– GPS maneuver while healthy

– GAGAN ground system failure

– Signal Deformation

An alarm does not cause a loss of function, it simply tells the user to stop

using the offending satellite

GAGAN responds to a hazard within 6.2 seconds.

X X+1 X+2 X+3 X+4 X+5 X+6

Failure

INREE A

INREE B

INREE C

Correction

Processor 1

Correction

Processor 2 Safety

Processor 2

Safety

Processor 1

Com

para

tor

Signal Generator

GUS

Receiver

GUS Processor WAAS Msg

Processor 2

WAAS Msg

Processor 1

Com

para

tor

X+6.2

Reference Stn Master Station

Uplink

Station

Page 13

Safety

– GAGAN provides India with a

sovereign means to enhance GPS

– Improved situational awareness via

low cost SBAS capable avionics.

– SBAS 3D precision guidance can

reduce landing accidents

– Higher Accuracy, integrity, continuity

and availability for both navigation and

ADS-B surveillance

– GAGAN provides seven 9’s of integrity

(probability of a hazard 1 in 10 million

per approach) .

Capacity – Improves availability of

navigation routes, enabling

reduction in aircraft spacing

safely

– Offloads major airports by

providing all weather

operations at secondary

airports

– Covers all routes and airports

within a region – not limited

by VHF broadcast station

range

GAGAN Benefits

Accord Software’s

certified SBAS receiver. Garmin’s GNS 530

certified SBAS receiver.

Page 14 10/28/2011

Efficiency – Enables optimum routes independent of

ground navigation aids

– Low incremental cost to expand regional

system into new areas

– No new equipment required at airports

– Reduces navigation system operating

costs

– GAGAN is ICAO compliant and

compatible with SBAS systems

Economic Growth – Makes all weather air services

available to more communities

– GAGAN signal also compatible

with non-aviation receivers

– Several million SBAS capable

receivers currently in use

– Enables many new multimodal

precise navigation applications

GAGAN Benefits