IRNSS

Indian Regional Navigation Satellite System. Indian's own Positioning System.

1. Indian Regional Navigation Satellite System (IRNSS) Presentation By : Tarang Gupta 1315001 MMU , Mullana

2. What is IRNSS?..(NAVIC) IRNSS refers to Indian Regional Navigation Satellite System. It is an independent regional navigation satellite system developed by India and being implemented by the Indian Space Research Organisation. It is designed using seven satellite to provide accurate position information service to users in India as well as the region extending up to 1500 km from its boundary, which is its primary service area.

3. Satelittes IRNSS-1A IRNSS-1A was the first out of seven navigational satellite in the Indian Regional Navigation Satellite System (IRNSS) series of satellites to be placed in  geosynchronous orbit .  It was built at ISRO Satellite Centre, Bangalore, costing ₹125 crore (US$19 million ).  It has a lift-off mass of 1380  kg. IRNSS-1B Satellite  IRNSS-1B  was placed in  geosynchronous orbit  on 4 April 2014 aboard the PSLV-C24 rocket from Satish Dhawan Space Centre, Sriharikota .  The satellite will provide navigation, tracking and mapping services.The IRNSS-1B satellite weighs 1,432  kg.

4. Satelittes IRNSS-1C Satellite  IRNSS-1C  was placed in  geostationary orbit on 16 October 2014 aboard   PSLV -C26 from the Satish Dhawan Space Centre, Sriharikota . The satellite is powered by two solar arrays, which generate power up to 1,660 watts. IRNSS-1D IRNSS-1D is the fourth IRNSS satellite. It was launched using India's PSLV-C27 on 28 March 2015. IRNSS-1E IRNSS-1E is the fifth IRNSS satellite. It was launched on 20 January 2016 using India's PSLV-C31.

5. Satelittes IRNSS-1F IRNSS-1F is the sixth IRNSS satellite. It was launched on 10 March 2016 using India's PSLV-C32. IRNSS-1G IRNSS-1G is the seventh IRNSS satellite. It was launched on 28 April 2016 using India's  PSLV-C33 , which concludes the setting up of the Indian Regional Navigation Satellite System.

6. IRNSS Elements Space Segment Ground Segment User Segment

7. Space Segment Space Segment consists of Seven satellites . 3 Satellites in Geo-Stationary orbit at 34°, 83° and 132° East. 4 Satellites in GEO Synchronous orbit placed at inclination of 29° with Longitude crossing at 55° and 111° East. The Satellites are specially configured for the Navigation. IRNSS Satellites are to be launched by the Indian launcher PSLV.

8. Space Segment

9. Ground Segment Spacecraft Control Centre (SCC) Manage and maintain the Satellite Constellation IRNSS Telemetry and Command stations Receiving telemetry from the IRNSS constellation. Telecommand the IRNSS constellation. Uplinking Navigation updates CDMA Ranging Stations Facilitate accurate ranging of IRNSS Satellite and send the data to the Navigation Control Centre.

10. USER Segment The user segment consists of a specially designed dual frequency receiver. Several types of receivers are planned with single and dual frequency reception. Single frequency receivers may be provided with capability to receive ionospheric corrections. The user receiver may receive other constellations in addition to IRNSS. tracked by the user All the seven IRNSS satellites will be continuously receiver. The user receiver will have minimum G/T of -27 dB/K similar to GPS user receiver .

11. IRNSS Configuration

12. IRNSS Coverage and Position Accuracy The intended service area for IRNSS is primarily the Indian Land Mass. The service area for IRNSS is in general specified as between longitude 40 deg East to 140 deg east and between latitude ± 40 deg . IRNSS system provides the Dual frequency user with a targeted position accuracy less than 20 meters in the coverage area.

13. IRNSS SERVICES 10.23 Mcps L5 S L5 10.23 Mcps Precise Positioning Service Restricted Services for Special Users 1.023 Mcps Standard Positioning Service Frequency Band L5(1191.795Mhz) S(2491.005Mhz) Servic e Typ e Signals S Ba L n B d an f d re F q re u q e u n en c c y y: : 11 2491.75 MHz

14. IRNSS Applications Terrestrial , Aerial and Marine Navigation. Disaster Management. Vehicle tracking and fleet management. Integration with mobile phones. Precise Timing. Aid for hikers and travellers. Visual and voice navigation for drivers.

15. CLOCK GENERATION & DISTRIBUTION UNIT (M) 3400-3425 MHz C O D E & D A T A R O U T I N G U N I T S Band BPSK Modulator (M) S Band BPSK Modulator (R) L5 BOC Modulator (M) L5 BOC Modulator (R) S W S Band U/C (M) S W S Band U/C (R) S Band DRIVER TWTA 120W S Band DRIVER TWTA 120W S W S W L5 Band U/C (M) L5 Band U/C (R) L5 BPSK Modulator (M) L5 BPSK Modulator (R) S W L5 Band U/C (M) L5 Band U/C (R) H Y B H Y B BPF CLOCK GENERATION & DISTRIBUTION UNIT (R) CLOCK SOURCE-1 (M) CLOCK SOURCE-2 (M) CLOCK SOURCE-3 (R) L5 BPSK Modulator (M) L5 BPSK Modulator (R) S W L5 Band U/C (M) L5 Band U/C (R) H Y B L5 Band SSPA (M) L5 Band SSPA (R) L5 Band SSPA (M) L5 Band SSPA (M) L5 Band SSPA (R) 40W SSPA C O M B I N E R RECEIVER (M) RECEIVER (R) PSF 6700-6725 MHz S W 5W SSPA 5W SSPA BPF 3400-3425 MHZ C-BAND Tx GLOBAL HORN ANTENNA C-BAND Rx GLOBAL HORN ANTENNA FREQUENCY GENERATION UNIT (M) NAV DATA UPLOADED THROUGH TTC NSGU (R) NSGU (M) Uploa d Dat a M e m o ry F r a m e F o r m att e r Spreading Code Generator Error Correction Code Control Signal Generator Timing Data Generator Encryption Unit AutoNAV Data Generator 10.23 MHz L & S-BAND G L O B A L COVERAGE A N TE N N A TO S U BS Y ST EMS FREQUENCY GENERATION UNIT (R) NAVIGATION PAYLOAD RANGING PAYLOAD PAYLOAD CONFIGURATION OF IRNSS

16. Bibliography http://gpsworld.com/irnss-signal-in-space-icd-released / https:// en.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System http:// www.isro.gov.in/irnss-programme http:// www.navipedia.net/index.php/NAVIC

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