GAGAN Initiatives Jan 18, 2018

Transcription

1 GAGAN Initiatives Jan 18, 2018

2 Topics covered 1. Brief profile of GAGAN 2. Features / Accuracy of GAGAN System 3. GAGAN Architecture 4. GAGAN services and Coverage 5. GAGAN utilization in aviation sector 6. GAGAN utilization in non aviation sector 7. Opportunities for neighboring states

3 Main functions of AAI AAI under the Ministry of Civil Aviation is responsible for creating, upgrading, maintaining and managing civil aviation infrastructure in India. Major functions of AAI Design, Development, Operation and Maintenance of international, domestic airports and civil enclaves. Control and Management of the Indian airspace extending beyond the territorial limits of the country, as accepted by ICAO. Provision of CNS/ATM systems.

4 GAGAN A brief Profile GAGAN (GPS Aided GEO Augmented Navigation) - Indian SBAS Jointly developed by the AAI and ISRO (ISRO) Continuous operations since December 2013 (RNP 0.1) and April 2015 (APV 1) Current Transmission on GSAT-8 (PRN-127) & GSAT-10 (PRN-128) Third GEO satellite GSAT-15 (PRN 132) is being integrated in the current system India is the 4th country to implement Satellite Based Navigation System (GAGAN) USA, Japan and Europe Already implemented Russia, China and Korea In process of implementing Australia, Africa and Middle East Planning for implementation 3rd to achieve Approach with Vertical Guidance Certification 1st system developed in Equatorial Region making India the leader in Asia Pacific Region

5 GAGAN Advantages Limitations of GPS Integrity: not guaranteed, since all satellites may not be satisfactorily working all times. Time to alarm: could be from minutes to hours and there is no indication of quality of service. Accuracy: is not sufficient. vertical accuracy for 95% of the time is >10m to 100m. Availability & Continuity are not assured. GAGAN provides remedies to above problems Transmits correction messages to Users through GEO satellite

6 GPS v/s GAGAN Parameters GPS GAGAN Accuracy : GPS accuracy is based on the Provides (confirmation with respect to established truth) Integrity: (Confirmation with respect to, use or not to use based on quality of data received) geodetic location of user/receiver position and also it varies with time. (Due to un accounted errors involved ). Around meters Can t provide Integrity information on Real Time and also not guaranteed by the service provider. User will get alert which varies from minutes to hours. Improved accuracy by applying corrections on any given user / Receiver position and consistent with time. Less than 2 meters Provides Real Time Integrity information to user and guaranteed by the service provider. User will get alert within 6.2 sec.

7 Horizontal Position Error (HPE) at Kolkata INRES site Performance of a Receiver (GPS v/s GAGAN)

8 Vertical Position Error (VPE) at Kolkata INRES site Performance of a Receiver (GPS v/s GAGAN)

9 GAGAN Services GAGAN provides the following air navigation services as per ICAO SARPS. - RNP 0.1 within India FIR - APV-1 in the landmass of Indian FIR. GAGAN is useful in aviation and non-aviation sectors (i.e. sectors requiring accurate location information)

10 GAGAN Architecture GSAT-8 GSAT-10 GSAT-15 SIS with PRN 127 GPS 1 to 32 SIS with PRN 128 INLUS #1 PRN 127(BG) INLUS #2 PRN128 (BG) INLUS #3 PRN 127 (DD) DATA COMMUNICATION 2 Mbps / 128 Kbps DATA COMMUNICATION 2 Mbps / 128 Kbps (OFC Link) INMCC #1 (BG) INMCC #2 (BG) INMCC #3 (DEL) DATA COMMUNICATION 128 Kbps (OFC & V Sat Dual Link) INRES-1 INRES-2 INRES-15

11 A. Ground segment 1. Reference stations (INRES) - 15 Nos 2. Master Control Center (INMCC) - 3 Nos 3. Uplink Stations (INLUS)- 3 Nos 4. Redundant data links between GAGAN sites. Jaisalmer Jammu Delhi Gaya GAGAN GAGAN Elements - INRES Sites Dibrugarh Guwahati Patna Porbandar Ahmedabad Nagpur Calcutta Bhubaneswar B. Space segment 1. GPS Constellation 2. GEO Satellites with nav payload 3 no s C. User segment GAGAN enabled SBAS Rx. GOA Bangalore Port Blair Trivandrum

12 GAGAN Infrastructure 1 2 INMCC CTF BUILDING AT BANGALORE INLUS 11 MTR ANTENNA AT BANGALORE 3 INRES Facility At Bangalore 1 VSAT ANTENNA (6.3M DIA) AT BANGALORE

13 GAGAN Functional Components INMCC CVSS and DCSS INLUS

14 GAGAN Reference Facility

15 Typical plots of one day GAGAN Service availability APV-1 Service RNP 0.1 Service

16 GAGAN utilization in India Aviation Sector As per National Civil Aviation Policy (NCAP-2016), Ministry of Civil Aviation, India mandated that: All new aircraft, registered in India to be GAGAN enabled from 1 st January Forward fit notification issued by DGCA. All aircraft, registered in India, to be GAGAN enabled from Completed design and development of 5 GAGAN LPV procedures at 3 airports Testing & validation of these procedures in progress. Development of APV procedures for 20 Airports are in the progress. In the next few years, GAGAN APV procedures development for almost all operational airports in India.

17 GAGAN services to neighboring countries GAGAN GEO footprint expands from Africa to Australia and have expansion capability for seamless navigation services for the region. GAGAN is also interoperable with other SBAS systems like WAAS, EGNOS and MSAS.

18 Coverage Area of GAGAN services APV1 RNP0.1

19 GAAGN RNP 0.1 Coverage beyond the Indian Region

20 Non- Aviation uses of GAGAN GAGAN can be used for non-aviation applications, such as : Survey/Mapping Railways Marine applications Scientific research Location Based Services etc

21 Utilization of GAGAN in Non aviation sector 1. Workshops organized with non-aviation sectors such as Roadways, Railways, Agriculture, Disaster Management, Maritime, Utilities, Power and Telecom. 2. These sectors are willing to use GAGAN for location based applications and shall take steps for its implementation. 3. Ministry of Road Transport and Highways has already mandated using GAGAN for vehicle tracking applications under the Automotive Standards. 4. Indian Railways procured GAGAN enabled dongles for testing its accuracy for the Geographical Information System (GIS) project. 5. AAI working on utilizing GAGAN signals for broadcasting of short messages as GAGAN Message Service (GAMES)

22 Uses & Benefits of GAGAN for Surveying / GIS Accurate source of GPS L1 corrections With a high performance GAGAN enabled receiver and a good quality antenna, consistent positioning under 1mtr can be achieved in real time. No base station is needed, so it can work in vast inland regions and open sea No user fee Nationwide coverage Excellent ergonomics ( no additional hardware) Very reliable

23 GAGAN MESSAGE SERVICE (GAMES) AAI is working to utilize GAGAN signals for broadcasting short service messages via GEO satellites. Broadcast early warning messages on the occurrence of natural disasters, calamities, dangers for the safety of life within GAGAN coverage area : Search and Rescue Messages Relief and mitigation related messages Meteorological information Users having the possibility to process the messages can extract the enclosed information and use it in the way they need.

24 Advantages of GAGAN Message services Free Service. Users equipped with GAGAN enables receivers know their position along with alerts. Confirmation of transmission and timely delivery of message is guaranteed as GAGAN is basically a SoL system Service availability ensured all the time Wider coverage area No additional requirement for local infrastructure Low operational cost Capability to support different type of alerts simultaneously

25 Opportunities for Neighboring States States Neighboring states can take advantage of GAGAN signals utilization in aviation and non aviation sectors in the respective states with minimal expenditure. AAI, as GAGAN service provider has the capability to : install reference stations. train personnel. integrate reference station data with Indian Master Control center and uplink the same via GEOs GSAT 8, 10 & 15 for SBAS services over the selected country.

26 Thank you

27 Railways Roads DoT CRIS is working on Real Time tracking of train movements Real Time Train Information System (RTIS) shall be using GAGAN for location data Working on pilot project Road Asset Management (RAMS) using GAGAN satellite RAMS funded by World Bank for 3,000 km of national highways NHAI sought funds from World Bank to collect data for 97,000 km of National Highways Examining feasibility of shifting timing reference of Telecom networks to GAGAN. Power Indicated willingness to shift to GAGAN as the timing reference for Critical National Infrastructure Shipping Ministry would promulgate GAGAN as being an approved SBAS for Dynamic Positioning, Pilotage and other marine uses Advantages of GAMES to be explored

28 HQ IDS DIETY Would specify WAAS enabled criteria for positioning units being procured for armed forces [Integrated Defense Staff ] Examine feasibility of inclusion of GAGAN as positioning system in standards notified for equipment manufacturers Agro NDMA MNCFC specified need for pilot project to quantify real time GAGAN benefits Interested to explore GAGAN for Crop Insurance (KISAN) project and precision farming applications Interested to utilize GAMES for disaster relief and post-disaster coordination Conduct pilot project to quantify real time benefits of GAMES DGLL Exploring Satellite based Automatic Identification System (AIS) and Vessel Traffic Management System Upgrading 13 stations with space technology

29 Manufacturers of survey grade GNSS receivers/ Total Station Trimble Garmin Leica Spectra Precision JAVAD Magellan Novatel Accord Stesalit

30 DGPS v/s GAGAN GEO Differential GPS (DGPS) is the most widely used technique for accurate positioning in Surveying. GAGAN is the NATIONWIDE DGPS system, which does not require any DGPS reference station or Modem. DGPS position errors grow proportional to the distance between the DGPS reference station and the user receiver. GAGAN provides better accuracy uniformly compared to DGPS and is most suitable for Surveying. GAGAN signals can be used for Static Surveys, Dynamic Surveys and Real Time Dynamic Surveys.