Go Back   Team-BHP > Around the Corner > Shifting gears


Reply
 
Thread Tools Search this Thread
Old 17th March 2013, 00:20   #1
Distinguished - BHPian
 
smartcat's Avatar
 
Join Date: Jun 2007
Location: Bangalore
Posts: 2,709
Thanked: 9,779 Times
Default India to have its own Satellite Navigation system soon!

We are currently using GPS (Global Positioning System) powered by US Government's satellites. Although its free to use by any country, it helps to be on the good books of USA. When Russia attacked Georgia in 2008, it found out the hard way that depending on USA GPS system is not ideal - because USA blacked out GPS in the region of conflict (thereby affecting Russian military movements).

That's why Russia started developing their own GPS system for both civilian (road navigation) and military (satellite guided missiles/bombs) use - called the GLONASS.

Both China and EU have/plan to have their own satellite guided navigation systems - called COMPASS and GALILEO respectively.

And now, it looks like India is working on a similar satellite navigation system.-

India to launch first navigation satellite in June
http://www.hindustantimes.com/India-...1-1027588.aspx

Quote:
India will launch in June the first of the seven Indian Regional Navigation Satellite System (IRNSS) into the earth orbit to provide real-time position, navigation and time services to multiple users, the space agency chief said Saturday.

"We are preparing to launch the first of the navigation satellites constellation in June to provide position accuracy better than 10 metres over India and the region extending up to 1,500km around the sub-continent," state-run Indian Space Research Organisation (ISRO) chairman K Radhakrishnan told reporters on the margins of a space event in Bangalore.
Further reading -
http://en.wikipedia.org/wiki/Indian_...tellite_System

Last edited by smartcat : 17th March 2013 at 00:23.
smartcat is online now   Reply With Quote
Old 17th March 2013, 00:33   #2
BHPian
 
neel385's Avatar
 
Join Date: Nov 2007
Location: Kharagpur
Posts: 528
Thanked: 391 Times
Default Re: India to have its own Satellite Navigation system soon!

Whatever happened to the GAGAN system? It was in the news for a while, but haven't heard anything in the recent past. Also, India is supposed to be a partner in the EU Galelio system, what's the news on that?
neel385 is offline   Reply With Quote
Old 17th March 2013, 03:38   #3
BHPian
 
swapnilup's Avatar
 
Join Date: Apr 2008
Location: Pune
Posts: 59
Thanked: 44 Times
Default

Wikipedia says GAGAN will be fully operational in 2013-14. Could this launch be part of GAGAN itself?
swapnilup is offline   Reply With Quote
Old 17th March 2013, 07:48   #4
Senior - BHPian
 
DicKy's Avatar
 
Join Date: Jan 2010
Location: Thiruvanthapuram
Posts: 1,430
Thanked: 584 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by neel385 View Post
Whatever happened to the GAGAN system? It was in the news for a while, but haven't heard anything in the recent past. Also, India is supposed to be a partner in the EU Galelio system, what's the news on that?
Looks like GAGAN is to be used in civial aviation only.
Hope that our own GPS system becomes operational soon with a fancy name, instead of Irnss... whatever it is.
DicKy is offline   Reply With Quote
Old 17th March 2013, 09:16   #5
Senior - BHPian
 
audioholic's Avatar
 
Join Date: Jun 2012
Location: BengaLuru
Posts: 3,018
Thanked: 4,203 Times
Default Re: India to have its own Satellite Navigation system soon!

Don't think this is really happening. Saying this as my father is in ISRO, and he is the DPD of satellite applications. Currently the only projects being talked about and on the road to implementation are Chandrayaan-2 and a Mars mission. This is the first time I heard about a GPS satellite. Not sure if it is developed by some other centre or body.
audioholic is online now   Reply With Quote
Old 17th March 2013, 10:09   #6
Senior - BHPian
 
Join Date: Oct 2012
Location: Delhi
Posts: 2,918
Thanked: 5,779 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by smartcat View Post
And now, it looks like India is working on a similar satellite navigation system.-

India to launch first navigation satellite in June
http://www.hindustantimes.com/India-...1-1027588.aspx
Dont hold your breath if you want to use this. It's a very different system from the American based GPS. Which means, as far as I know/can tell, that all the devices need to be made specifically for the Indian GPS.

So your typical US GPS based Garmin, Nuvi, Magellan, TomTom, Iphone etc wont work on this system.

Not sure how they are going to do that. I'm sure they'll develop Indian receivers for the military. But for civilian applications? Device manufacturing is all about scale and volume. You need to mass produce these to get them to a reasonable cost level.

Jeroen
Jeroen is offline   Reply With Quote
Old 17th March 2013, 11:22   #7
Senior - BHPian
 
joybhowmik's Avatar
 
Join Date: Aug 2005
Location: New Delhi
Posts: 1,314
Thanked: 1,885 Times
Default Re: India to have its own Satellite Navigation system soon!

If India were to indeed launch its own GPS satellites - would seven be enough? I thought the minimum required for global coverage was 24 satellites, with additional satellites needed to improve precision of receivers. Seven satellites might just be the minimum needed for the subcontinent and adjoining areas.

Secondly, the Indian government cannot mandate the use of its own GPS signals for civilian use and expect to be able to enforce this. This is because, the alternate NAVSTAR is free to air, and already provides military grade signal, and a proliferation of GPS receivers in the open market already support this.
joybhowmik is offline   Reply With Quote
Old 17th March 2013, 13:28   #8
BHPian
 
Bluu's Avatar
 
Join Date: Oct 2007
Location: Bangalore
Posts: 247
Thanked: 85 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by Jeroen View Post
Dont hold your breath if you want to use this. It's a very different system from the American based GPS. Which means, as far as I know/can tell, that all the devices need to be made specifically for the Indian GPS.
My cellphone uses the GLONASS navigation system. Does this mean it will not work in the US or once the Indian navigation system becomes active?
Bluu is offline   Reply With Quote
Old 17th March 2013, 14:54   #9
BHPian
 
BuildUpGypsy's Avatar
 
Join Date: Jan 2013
Location: Trivandrum
Posts: 46
Thanked: 46 Times
Default Re: India to have its own Satellite Navigation system soon!

GAGAN is meant for Air Navigation alone -that too in the Indian territory only- and is actually an enhancement to the existing system. It cannot be used for surface navigation. (Gagan = Sky )
BuildUpGypsy is offline   Reply With Quote
Old 17th March 2013, 15:02   #10
BHPian
 
neel385's Avatar
 
Join Date: Nov 2007
Location: Kharagpur
Posts: 528
Thanked: 391 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by BuildUpGypsy View Post
GAGAN is meant for Air Navigation alone -that too in the Indian territory only- and is actually an enhancement to the existing system. It cannot be used for surface navigation. (Gagan = Sky )
GAGAN really has little to do with "sky" as you suggest. GAGAN stands for GPS Aided Geo-Augmented Navigation. It essentially is a Wide Area Augmentation System and since the correction signal is transmitted through satellites, there should be no problem in using it for terrestrial applications.
neel385 is offline   Reply With Quote
Old 17th March 2013, 18:25   #11
Senior - BHPian
 
Join Date: Oct 2012
Location: Delhi
Posts: 2,918
Thanked: 5,779 Times
Default

Quote:
Originally Posted by joybhowmik View Post
If India were to indeed launch its own GPS satellites - would seven be enough? I thought the minimum required for global coverage was 24 satellites, with additional satellites needed to improve precision of receivers. Seven satellites might just be the minimum needed for the subcontinent and adjoining areas.

Secondly, the Indian government cannot mandate the use of its own GPS signals for civilian use and expect to be able to enforce this. This is because, the alternate NAVSTAR is free to air, and already provides military grade signal, and a proliferation of GPS receivers in the open market already support this.
It does not provide global coverage. The R in IRNSS stands for Regional.
And yes those 7 satellites cover only a small area. Very different set up from GPS. Three of these satellites will be in a geo stationary position.

See:
http://en.wikipedia.org/wiki/Indian_...tellite_System

Jeroen

Quote:
Originally Posted by Bluu View Post
My cellphone uses the GLONASS navigation system. Does this mean it will not work in the US or once the Indian navigation system becomes active?
GLONASS provides global coverage, similar to GPS. So it'll work fine in the US or anywhere else on the planet for that matter.

As long as GLONASS is on air it will work. The Indian navigation system is just another one.

Interestingly enough I just read that Iphone support allready GPS and GLONASS.

http://en.wikipedia.org/wiki/GLONASS

Last edited by benbsb29 : 19th March 2013 at 07:10. Reason: Merging back-to-back posts. Plz use the Edit button if posting within 30 mins of previous post. Thanks.
Jeroen is offline   Reply With Quote
Old 18th March 2013, 10:28   #12
BHPian
 
sajusherief's Avatar
 
Join Date: Mar 2013
Location: Bangalore
Posts: 175
Thanked: 78 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by Jeroen View Post
Interestingly enough I just read that Iphone support allready GPS and GLONASS.
In fact many manufacturers (samsung, Nexus 4 etc) have already migrated to GLONASS because of their quick locking capabilities and accuracy.
sajusherief is offline   Reply With Quote
Old 18th March 2013, 13:34   #13
BHPian
 
rrsteer's Avatar
 
Join Date: Dec 2008
Location: 144022
Posts: 918
Thanked: 817 Times
Default Re: India to have its own Satellite Navigation system soon!

Any idea what is the business model for satellite navigation? What i mean to ask how does an organisation that runs the satellite earn money? I understand GPS & GLONASS are essentially military in character, but GALILEO is a civilian initiative, so how will it make money?

My other question would be who are the leading sat-nav service providers in india, across categories?
rrsteer is offline   Reply With Quote
Old 18th March 2013, 14:08   #14
BHPian
 
Guite's Avatar
 
Join Date: Jul 2008
Location: Noida, NCR
Posts: 463
Thanked: 171 Times
Default Re: India to have its own Satellite Navigation system soon!

I too would like to understand the business model of GPS satellites. I have a turn-by-turn navigation system preloaded to my Moto Milestone. So I have already paid Motorola for the software and map. Who pays for the uplinking and data transmission between phone and satellite when I use this navigation system?
Guite is offline   Reply With Quote
Old 18th March 2013, 14:25   #15
Senior - BHPian
 
alpha1's Avatar
 
Join Date: Apr 2007
Location: P00NA
Posts: 1,614
Thanked: 949 Times
Default Re: India to have its own Satellite Navigation system soon!

Quote:
Originally Posted by rrsteer View Post
Any idea what is the business model for satellite navigation? What i mean to ask how does an organisation that runs the satellite earn money? I understand GPS & GLONASS are essentially military in character, but GALILEO is a civilian initiative, so how will it make money?

My other question would be who are the leading sat-nav service providers in india, across categories?
The GPS receiver manufacturers pay a "royalty" to the GPS firm via the "chip".
Different chip = different resolution = different royalty paid.
Of course even I am not aware of the actual money flow.

Quote:
Originally Posted by Guite View Post
I too would like to understand the business model of GPS satellites. I have a turn-by-turn navigation system preloaded to my Moto Milestone. So I have already paid Motorola for the software and map. Who pays for the uplinking and data transmission between phone and satellite when I use this navigation system?
There is no Upload to satellite.
Imagine the GPS satellite as clouds raining their signal (coordinates and time) down on earth.
Your receiver catches these "rain drops" from multiple satellite, and calculates the latitude/longitude/elevation on earth.
The phone downloads the google map using internet, and marks your position based on the latitude/longitude calculated.
In case of Nokia, you may the map pre-loaded on your phone/device.

Last edited by alpha1 : 18th March 2013 at 14:33.
alpha1 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Waze - Free satellite navigation for your smartphone ByDesign Gadgets, Computers & Software 420 8th June 2017 10:46
In Dash Navigation vs Navigation Module vs Separate Navigation SirAlec In-Car Entertainment 27 20th January 2014 22:19
Skoda Superb - Satellite Navigation integration? PM - B In-Car Entertainment 4 25th March 2012 18:16
Hyundai launches i20 with satellite navigation h@r$h@l The Indian Car Scene 87 3rd June 2011 13:50
2011 i10 Asta A/T - its Korean, its new, its fast, its red, and its coming. nirupesh Test-Drives & Initial Ownership Reports 1 8th January 2011 10:45


All times are GMT +5.5. The time now is 08:28.

Copyright ©2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks