Analysis of information sources in references of the Wikipedia article "Indian Regional Navigation Satellite System" in English language version.
Currently, only four IRNSS satellites are able to provide location services, according to ISRO officials. The other satellites can only be used for messaging services such as providing disaster warnings or potential fishing zone messages for fishermen.
For determining position and time, a minimum of four satellites are required.
IRNSS-1A and IRNSS-1G are currently being used for short messaging services.
ISTRAC has established a network of stations to support IRNSS satellites consisting of four IRCDR stations (Hassan, Bhopal, Jodhpur and Shillong), 16 IRIMS stations (Bengaluru, Hassan, Bhopal, Jodhpur, Shillong, Dehradun, Port Blair, Mahendragiri, Lucknow, Kolkata, Udaipur, Shadnagar, Pune and Mauritius). ISTRAC has also established ISRO Navigation Centre-1, including an IRNWT facility at Bengaluru and ISRO Navigation Centre-2, including an IRNWT facility at Lucknow.
With the inclusion of NVS-01, the NavIC base layer now consists of five satellites (IRNSS-1B, 1C, 1F, 1I and NVS-01) for operational service.
IRNSS 1G is not available for performance evaluation since October 05, 2019. IRNSS 1E is not available for performance evaluation since August 04, 2021
It will be placed at 111.75ºE replacing IRNSS-1E
Currently, there are four functional satellites providing PNT service.
The project to establish the IRNSS at a cost of Rs. 1,420 crores was approved by the Union Government in June 2006.
Brunei, Indonesia, Australia, Russia, France, Japan (IRIMS)
NavIC is offering short messaging service for users in Indian region through IRNSS-1A and 1E satellites.
Currently, only four IRNSS satellites are able to provide location services, according to ISRO officials. The other satellites can only be used for messaging services such as providing disaster warnings or potential fishing zone messages for fishermen.
IRNSS-1A and IRNSS-1G are currently being used for short messaging services.
ISTRAC has established a network of stations to support IRNSS satellites consisting of four IRCDR stations (Hassan, Bhopal, Jodhpur and Shillong), 16 IRIMS stations (Bengaluru, Hassan, Bhopal, Jodhpur, Shillong, Dehradun, Port Blair, Mahendragiri, Lucknow, Kolkata, Udaipur, Shadnagar, Pune and Mauritius). ISTRAC has also established ISRO Navigation Centre-1, including an IRNWT facility at Bengaluru and ISRO Navigation Centre-2, including an IRNWT facility at Lucknow.
The project to establish the IRNSS at a cost of Rs. 1,420 crores was approved by the Union Government in June 2006.
Four satellites providing PNT service (IRNSS-1B, 1F, 1I,and NVS-01).
