Talk:Indian Regional Navigation Satellite System

Proposed merge with IRNSS-1E

Recommend merging IRNSS-1E into this article along with the various other similar articles about the previous 4 satellites. There doesn't seem to be enough here to justify a stand alone article. Ad Orientem (talk) 03:41, 17 February 2014 (UTC)

Improve citations by using more references to ISRO's press releases

A lot of references point to news articles and third party websites. I suggest a lot more usage of ISRO's website links and press releases, since most of the information about IRNSS is already out there on their websites anyways, and since they're the authentic source of this information.

Copyright problem removed

Prior content in this article duplicated one or more previously published sources. The material was copied from: http://timesofindia.indiatimes.com/home/science/How-Kargil-spurred-India-to-design-own-GPS/articleshow/33254691.cms. Copied or closely paraphrased material has been rewritten or removed and must not be restored, unless it is duly released under a compatible license. (For more information, please see "using copyrighted works from others" if you are not the copyright holder of this material, or "donating copyrighted materials" if you are.) For legal reasons, we cannot accept copyrighted text or images borrowed from other web sites or published material; such additions will be deleted. Contributors may use copyrighted publications as a source of information, but not as a source of sentences or phrases. Accordingly, the material may be rewritten, but only if it does not infringe on the copyright of the original or plagiarize from that source. Please see our guideline on non-free text for how to properly implement limited quotations of copyrighted text. Wikipedia takes copyright violations very seriously, and persistent violators will be blocked from editing. While we appreciate contributions, we must require all contributors to understand and comply with these policies. Thank you. MER-C 12:10, 11 May 2014 (UTC)

Incorrect Information

The article (first paragraph) states: "The requirement of such a navigation system is driven because access to foreign government-controlled global navigation satellite systems is not guaranteed in hostile situations, as happened to the Indian military depending on American GPS during the Kargil War.[2]"

The U.s. has never denied access to GPS signals to anyone, ever. The cited source (Times of India) is obviously incorrect. This story that America denied GPS to India is repeated many times on the internet, but there is no apparent original source for the story. InspectorVijay (talk) 13:03, 6 October 2015 (UTC)

If you are sure about it, delete it. Akash (talk) 13:42, 8 June 2016 (UTC)

Delayed of course

http://www.crazyengineers.com/threads/isros-irnss-the-desi-navigation-system-to-replace-american-gps.84301/

Is schedule slippage notable for Indian space systems? Hcobb (talk) 17:49, 23 October 2015 (UTC)

Real time tracking.

stuffin.space has a wonderful tool for real time tracking of all space objects. It can track all the satellites simultaneously. http://stuffin.space/?search=IRNSS adding the link to the article Akash (talk) 13:50, 8 June 2016 (UTC)

Multiple wikilinks removal

Hi, can you please explain why you remove wikilink from Indian Regional Navigation Satellite System page? [1] here. Thanks Spartacus! ^t@lk 15:15, 5 August 2016 (UTC)

As explained in the edit summary: because of MOS:LINK. fgnievinski (talk) 15:18, 5 August 2016 (UTC)

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Accuracy Section

In the "Accuracy" section there is a line "The GPS, for comparison, had a position accuracy of 20-30 m." I believe the GPS accuracy should be 15m without any augmentation and 3-5 with some kind of augmentation . --Abdul Jabbar 09:21, 20 June 2017 (UTC)

References

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• Added archive https://web.archive.org/web/20101205044458/http://www.oosa.unvienna.org/pdf/icg/2008/expert/2-3.pdf to http://www.oosa.unvienna.org/pdf/icg/2008/expert/2-3.pdf

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"redundant"?

The article says, "In 2017 all rubidium atomic clocks on board IRNSS-1A failed, rendering the satellite redundant." I do not think that word means what you think it means.[2]

A redundant satellite would be a spare, available for use in place of another satellite, in case the other one fails. In this case, IRNSS-1A has failed, so it cannot replace another satellite if the other one fails.

I think the correct word is "non-functional," or "malfunctioning," or "unusable." Would anyone object if I make that change? NCdave (talk) 22:46, 11 November 2017 (UTC)

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• Added archive https://web.archive.org/web/20110417015013/http://informationmadness.com/technology/tech-tips/3684-3-satellites-to-be-launched-by-isro-on-20th-april.html to http://informationmadness.com/technology/tech-tips/3684-3-satellites-to-be-launched-by-isro-on-20th-april.html
• Added archive https://web.archive.org/web/20070331145825/http://www.isro.org/newsletters/spaceindia/aprsep2006/Satnavindustry.htm to http://www.isro.org/newsletters/spaceindia/aprsep2006/Satnavindustry.htm

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Accuracy 2

I suggest the accuracy section to be updated in regards to comparison towards GPS, or remove the comparison completely. The information is outdated. Considering the source is from 2008 and compared to civilian GPS, not military. Per GPS.GOV, the accuracy is 4.9 meters and the military use dual frequency/band. Here is the source https://www.gps.gov/systems/gps/performance/accuracy/ — Preceding unsigned comment added by 2603:3003:3095:8000:59F3:B7AB:670E:A702 (talk) 18:25, 19 July 2019 (UTC)

A Commons file used on this page has been nominated for deletion

The following Wikimedia Commons file used on this page has been nominated for deletion:

• IRNSS Series 1.jpg

Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 18:27, 20 August 2019 (UTC)

Future developments

The § Future developments section needs to be updated. — UnladenSwallow (talk) 02:54, 2 October 2019 (UTC)

1A - Partial Failure?

The satellite is still working and isn't completely lost as is being implied in the wiki. Acc. to Annual Report 2019-20 of ISRO, the satellite is being used for communication, granted this is not the main purpose but the satellite is far from being defunct.

IMHO, I think it will be best to label the status as Partial Failure than a complete failure.

Source- Page 50

cc @Ohsin:, @Brown Chocolate:

Shashpant (talk) 05:51, 4 March 2020 (UTC)

I agree, though all three clocks on it have failed making it ineffective for PNT services apparently they have specifically re-purposed IRNSS-1A and are using it to relay short messages to receivers. Though it should be noted this location specific messaging service is part of NavIC from the beginning. Some references.

• https://timesofindia.indiatimes.com/home/science/three-atomic-clocks-of-desi-gps-satellites-stop-working/articleshow/59116886.cms
• https://www.unoosa.org/pdf/icg/2016/icg11/05.pdf (PDF: Pg 9, 10)
• Signal-in-Space ICD for Messaging Service IRNSS-1A (PDF)
• https://www.unoosa.org/documents/pdf/icg/2018/icg13/wgb/wgb_18.pdf (PDF)

 Ohsin  07:04, 4 March 2020 (UTC)

I don't see anything wrong in changing it to partial success as messaging service was part of NavIC. Just remember to mention it in remark section so that it'll be clear to audience. Cheers Brown Chocolate (talk) 12:25, 4 March 2020 (UTC)

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Indian Regional Navigation Satellite System

Indian Regional Navigation Satellite System 49.204.212.227 (talk) 01:27, 1 August 2024 (UTC)