GAGAN

[itaskol]

pakistan will have similar system based on beidou in several years.

 

[IND151]

IRNSS
(Indian Regional Navigation Satellite System)

IRNSS is an independent regional navigation system consisting of 7 satellite constellation and
corresponding ground segment.Coverage area is about 1500km beyond Indian territory.


OBJECTIVES

Reliable Position, Navigation and Timing services over India and its immediate neighborhood.To provide fairly good accuracy to the user.The constellation is seen by user all the time.Integrity and ionospheric correction messages to user.

3 GSO satellites at 340, 830, and 131.50 East.
4 Inclined GSO satellites at 290 inclination with Longitude crossing at 550 and 111.50.
To be launched indigenously on the proven Indian PSLV.

First satellite launch by second half of 2011.
Full constellation completion by mid 2014.
In Phase#2, the space segment is proposed to be augmented with 4 more satellites to make 11 satellite constellation with better coverage and accuracy.

Groud segment

1 IRNSS Navigation Control Facility ( IRNCF )
2 IRNSS Navigation Centre ( INC )
2 IRNSS Network Time ( IRNWT )
4 IRNSS CDMA Ranging Stations ( IRCDR )
1 IRNSS Laser Ranging Service ( ILRS )
16 Range and Integrity Monitoring Stations
1 IRNSS Data Communication Network (IRDCN)
1 IRNSS Satellite Control Facility ( IRSCF )
9 IRNSS TTC & Land Uplink Stations (INLUS)
2 IRNSS Satellite Control Centre ( IRSCC )


IRNSS NAVIGATION SIGNALS
SPS
RS
L5*(1176.45*MHz*)
BPSK*
BOC*(5,2)
S*band*(2492.028*MHz)*
BPSK
BOC(5,2)
CDMA*Ranging*Frequencies
•Uplink

:*6712*.0MHz*(B.W*24MHz)
•Downlink

:*3412*.0*MHz*(B.W*24MHz)

there is already thread on IRNSS
(Indian Regional Navigation Satellite System)

http://www.defence.pk/forums/indian...-satellite-system-what-advantages-offers.html

anyway good work

 

[Safriz]

^^^ Hello.
Bump that thread and keep it alive..
I had a look,and its interesting...
I will post some more info on GAGAN here, your thread can host more info on IRNSS.
Post military applications of IRNSS,if you find any info on that.

 

[turkish]

pakistan will have similar system based on beidou in several years.

Thanx for the indepth info..

 

[IND151]

^^^ Hello.
Bump that thread and keep it alive..
I had a look,and its interesting...
I will post some more info on GAGAN here, your thread can host more info on IRNSS.
Post military applications of IRNSS,if you find any info on that.

Already posted in that thread. will post more info

 

[Safriz]

GAGAN Master station Bangalore

GAGAN reference station Bangalore

The pictures are from 2007 , and you can see ongoing construction work..

 

[Safriz]

GAGAN antennas are made by an American Company.

September 6, 2009
Inside GNSS, September/October 2009


PCTEL Snares ISRO’s GAGAN Ground Station Antenna Role

PCTEL, Inc., of Bloomingdale, Illinois USA, announced that its high-precision Wide Area Augmentation System (WAAS) ground station GPS antennas will be deployed in India’s GPS-Aided Geosynchronous Augmented Navigation (GAGAN) system.

This summer the Indian Space Research Organization (ISRO), which is building GAGAN in collaboration with the Airports Authority of India, announced the award of an $82-million contract to Raytheon Company to build the GAGAN ground stations.

PCTEL’s WAAS antennas are currently deployed for the North American WAAS system and Japan’s MTSAT Satellite-based Augmentation System (MSAS). Japan

A product line within PCTEL’s military and government antenna product family, the land-based WAAS antennas enable highly precise navigation and tracking of aircraft. Part of PCTEL’s Maxrad-branded products, the model 2225NW WAAS antenna features high-rejection filters and covers L1, L2, and L5 GPS frequencies.

“PCTEL is proud to offer this advanced level of precision antenna technology for the aviation industry and expand our activities outside the U.S.,” said Jeff Miller, vice-resident and general manager of PCTEL`s Antenna Products Group. “We stay committed to the development of high performance GPS antenna solutions for commercial and defense markets,” added Miller.

PCTEL will be demonstrating its WAAS GPS antennas as well as its portfolio of antenna products at the ION GNSS 2009 conference, exhibit Booth #523, September 22-25 in Savannah, Georgia.

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