By Rakesh yadav -

What is NavIC ? Which is the NavIC better than GPS?


     

Qualcomm has partnered with ISRO to integrate location tracking based on India’s own navigation system – Navigation with Indian Constellation (NavIC) – on a few of its chipsets. In the first half of 2020, we will have devices in India that, apart from constellations like GPS and GLONASS, use NavIC for location tracking. 
Navic is the operational name of the Indian Regional Navigation Satellite System (IRNSS) developed by ISRO. Unlike GPS which is a Global tracking constellation, Navic has been designed to focus especially on India and adjoining regions (1500 Kms around India) and is a very significant achievement for the country. 
NavIC’s Standard Positioning Service (SPS) will be available to civilians, but the system also has another level of Restrictive Service (RS) that is encrypted and much more accurate ( in the range of 1 to 5 meters), and meant for defense applications and use by armed forces. 

NavIC currently consists of 8 Satellites – IRNSS-1A, IRNSS-1B, IRNSS-1C, IRNSS-1D, IRNSS-1E, IRNSS-1F, IRNSS-1G, IRNSS-1I.
The Navic was supposed to include 7 satellites and 2 backup satellites, but the Atomic clock of the first satellite, IRNSS 1A, stopped working and the launch of IRNSS 1H that was meant to replace the defective satellite failed. The IRNSS 1I launched later finally replaced IRNSS 1A and completed the constellation. 
As mentioned above, GPS or Global Positioning System tracks the entire globe and is maintained by the USA. The constellation requires 24 Satellites to be operational and has around 31 satellites in orbit. All of these are Geosynchronous Satellites, which is to say that they are not stationary in space with respect to the revolving earth. GPS also uses a single frequency band and this makes calculations a bit more complex. 
India’s Navic has 3 Geostationary satellites and 4 geosynchronous satellites, and these satellites are situated in much higher orbit (signal is less prone to obstructions). NavIC satellites use dual frequency bands (L5-band and S-band), which is why the system is relatively more accurate than GPS (that uses a single band and makes compensation for error due to signal deterioration by the atmosphere). 

In which Phones have NavIC support ?

Qualcomm has launched several NavIC compatible chipsets – Snapdragon 865, Snapdragon 765, Snapdragon 720G, Snapdragon 662, and Snapdragon 460. The first phone in India with NavIC support is Realme X50 Pro 5G. Realme and Xiaomi have both confirmed that they are working on more NavIC supported phones. 

The first set of Qualcomm chipsets will have single-frequency receivers that track the L5 band, the brand will later bring in dual-frequency receivers that can track both L5 and S-band for higher accuracy.
In case you are confused, Google Maps and other location-based apps won’t have to make any changes to benefit from the new development. Qualcomm Location Suite, that currently supports 7 constellations, will be responsible for tracking your location and passing it on to apps that require it. 
List of NavIC Supported Phones:
  • Realme X50 Pro 5G
  • Redmi Note 9 Pro
  • Redmi Note 9 Pro Max
  • Realme 6 Pro
No. Navic uses a different frequency band and Integrating NavIC also requires hardware changes on the chipset. Qualcomm representative confirmed to Smartprix that the support can not be passed on to older phones via OTA update. 
Uploaded by :- Rakesh yadav
department of Electronics and communication
TIH team member

Email id .... theinnovationhub2019@gmail.com

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