India to have own satellite navigation system soon: ISRO

[AAD_PAD_PDV]

So by when we will have IRNSS ready ??/

It will take two years. We have GLONASS available until that time.

 

[AMCA]

So by when we will have IRNSS ready ??/

Sorry it will take more 2-3 years, the GAGAN will be activated by 2012

 

[GORKHALI]

No one is boasting, since You are an Indian You must know that, In a democracy Almost every Govt move is Made Public since Public Money is Used, Where as certain secrecy's are maintained.... If the Govt dosent say it, then the Public that is YOU and ME, can File an RTI to the ISRO RTI officer asking why he did not reveal before making a civilian project such as these when there was a tender passed for requirements, and ISRO could be sued upon that ...... Understand My dear Indian?? Next time, learn what India is before using that flag.... TATA

double post..........

 

[Ammyy]

Can anybody explain me what are the difference between IRNSS and GAGAN ?/

@DRDO
As far as i know, Indian version of US GPS and Russian GLONASS is GAGAN.

First GAGAN satellite was failed in April 2010. 2 More gagan satellites to be launched in 2011.

Main details and difference

The Indian SBAS System – GAGAN

K.N. Suryanarayana Rao, S. Pal
ISRO Satellite Centre, Airport Road, Bangalore 560017

Abstract


GPS, GLONASS and the proposed GALILEO Navigation Satellite Systems are meant for
providing position and timing information for a variety of applications. However, for Safety
Critical applications the basic constellations cannot meet the requirements in terms of
accuracy, integrity and availability. For this purpose, the basic constellations are augmented
by an overlay system. U.S has put up its Wide Area Augmentation System (WAAS), Europe
its EGNOS and Japan its MSAS in their respective regions. Indian Space Research
Organization (ISRO), along with Airport Authority of India (AAI) has worked out a joint
program to implement the Satellite Based Augmentation System (SBAS) for the Indian
region to fill the gap between EGNOS and MSAS. The project called GAGAN (GPS Aided
Geo Augmented Navigation) has been taken up with an objective to demonstrate the SBAS
technology over the Indian region. There is a plan to have an operational system to provide
a seamless navigation facility in the region, which is interoperable with other SBAS.
Although primarily meant for civil aviation, it is also beneficial for other users.

The GAGAN system will have a full complement of the SBAS inclusive of ground and
onboard segment. To start with, the ground segment will consist of 8 reference stations, one
mission control centre and one uplinking station. The onboard segment consists of a
navigation payload onboard Indian geostationary satellite GSAT-4. The indigenously
designed and developed navigational transponder has the latest features inclusive of L1 and
L5 operation, higher EIRP of upto 33 dBw and higher bandwidth of 20 Mhz.

One essential component of the GAGAN project is the study of the ionospheric behaviour
over the Indian region. This has been specially taken up in view of the rather uncertain
nature of the behaviour of the ionosphere in the region. The study will lead to the
optimization of the algorithms for the ionospheric corrections in the region.

Interoperability between GAGAN and other Satellite Based
Augmentation Systems (SBAS ‘s)
Arjun Singh, Airports Authority of India

Abstract

In the recent years, there has been wide spread growth in the independent development of
SBASs. They are physically providing service to independent airspace of their States. The
current interest is interoperability of physically separated independent SBAS. The SBAS
service provider States are investigating the type, amount and methodology of information
shared between them. There are interface issues related to a user passing from service
area of one to another SBAS. There will be a degradation of ephemeris and clock integrity
bounds for users operating outside of the service area of SBAS. The effect of adding
stations outside of service area will reduce the degradation of SBAS signal for the user’s.
Europe, US/ Canada, Japan, India, Australia are currently developing their individual SBAS.
Although all SBAS is regional based system, tt is recognized the necessity to establish
adequate way for cooperation and coordination among the different SBAS service provider.
In order to provide SBAS interoperability, in turn provides more effective implementation is a
part of seamless worldwide navigation system.

SBAS provider only guarantees the adequate service in their service volume. In spite of this,
SBAS broadcast signals will be available any where in their Geo-stationary Earth Orbiting
Satellites (GEOS) foot print coverage area. In the case of GAGAN, its foot print overlaps the
EGNOS & MSAS footprint. Indian airspace falls on the edge of the footprint of EGNOS &
MSAS GEOS. It means the level of service over Indian airspace is not defined by EGNOS &
MSAS and degraded mode of signal will be available. Taking this into account, Indian
airspace is covered by GAGAN foot print. The possibility of providing minimum service level
in the intermediate region is by means of interoperability. For this purpose several region in
Asia-Pacific scenario have been explored and discussed through this paper. In particular
EGNOS, MSAS and GRAS interoperability with GAGAN will be presented.

A very detailed analysis of our own GAGAN

http://www.aiaa.org/indiaus2004/Sat-navigation.pdf

 

[IND151]

nice news! GAGAN must be operational in 7 to 9 years and should have 10 or more sats. we dont need more than 10 12 sats coz we are gonna share GLONASS signals with Russia.

 

[Ammyy]

nice news! GAGAN must be operational in 7 to 9 years and should have 10 or more sats. we dont need more than 10 12 sats coz we are gonna share GLONASS signals with Russia.

Its really good news that Russia is ready to share GLONASS for Military use with India

But I think after 2020 or 2022 India is also able to operate their own full coverage Navigation system

I know we dnt have plane for full coverage but Apna mal apna hi hota hai

 

[Ammyy]

Indian Navigation System - Seven Satellites to be Launched in Six Years

India will launch seven satellites in the next four to six years to develop its own version of the Global Positioning System (GPS) for enhancing surveillance capabilities and improving accuracy of its weapon systems. The Indian Navigation System (INS) satellites would provide coverage over India's areas of interest for military purposes along with its civilian uses, Indian Air Force sources told Press Trust of India.

Till now, India is dependent on the American GPS and has signed a deal with Russia for using their GLONASS system but having an indigenous system would guarantee the availability of system during crisis or conflicts. Asked about similar developments in the neighbourhood, they said China was developing its own version of the GPS which will cover the whole globe. "But we don't want to cover the whole world and want to focus on the region important for us," the sources said.

--

India did not believe in space wars but had all the technology required to integrate systems to defend its satellites, V K Saraswat, Scientific Advisor to the Defence Minister, said today. "Our country does not have a policy to attack anybody in space. We don't believe in it. But as part of the Ballistic Missile Defence Programme, we have all the technology elements which are required to integrate a system through which we can defend our satellites or take care of future requirements."

As a country, "we do not believe in space wars", he said in response to a query whether India had anti-satellite weapon capabilities. India did not have a formal anti-satellite weapon policy of attacking satellites in space, but was well geared in case of any eventuality, he told reporters here.

Indian Navigation System - Seven Satellites to be Launched in Six Years | Aerospace19

 

[Swati Shukla]

great news..

 

[RoYaL~GuJJaR]

Awesome News...

 

[angeldemon_007]

Good to hear but when are we launching these Sats ??? And wh these articles always state about V K Saraswat's comment on ASAT which was made last year...and has no credibility unless tested...