NVS-02 undergoing vibration test. Photo: ISRO
Officials of the Indian cosmic research organization (ISRA) claim that at least three satellites want to start at least three satellites before 2026 to replace the extinct satellites that are part of the “Indian GPS” system or maritime system (Indian constellation navigation). However, it seems that the launch prevents the key element – the development of indigenous hours.
These high-precision hours are designed in five satellites-they are what provides users on Earth’s accurate timing (and thus location). The Satellites provide something less accurate for civilian purposes for civilian purposes.
Since 2013, nine satellites of the Indian regional navigation satellite system (IRNSS) have been launched informally called in addition. Eight of them reached the intended orbit. The last of this constellation of the satellites (Irns-1i) began in 2018. These constellation satellites resemble Russian Glonas, Chinese Beid, American GPS and European Galileo constellation satellites provided by localization services. However, a maritime sailor is expected to do so only in India and a circle of 1,500 km. However, in the case of future global conflicts and India, access to these foreign constellations has denied more back as a system.
Last month, ISRA revealed through the right to information that five naval satellites were completely extinct, all three hours in each satellite did not work. In one of the three satellites with functioning atomic clocks, two out of three hours failed. Therefore, only two satellites of the constellation have a functional atomic clock. Atomic clocks in this constellation satellites were imported ISRA from a fixed spectrum.
For another series of satellites, which will replace the impaired and aging fleet of IRNSS satellites – two used three used or are close to their nominal durability for 10 years, although these systems can work outside – ISRO decided to install the indigenous developed Rubidium clock.
“Each satellite will have five hours, even if it is still in the development process,” said Nilesh Desai, Director of Space Application Center, a key part of ISRO, Hindus on the outskirts of the Conclave in Delhi in memory of the National Space Day.
Another official who is familiar with ISRA said that while the Rubidium clock is based on indigenous design, there were key components that need to be imported, and this contributed to the challenges of orders and delay in commissioning.
So far, to replace its fleet of irns satellites, ISRO launched ISRO in May 2023 two satellites NVS-01 and NVS-02 in January 2025. NVS-01 successfully achieved its designated orbit and works as intended, NVS-02 satellite.
By 2040, India has been trying to initiate at least 100 satellites, several of which provide services for displaying and communication for government and private sectors.
Read more
Published – August 23 2025 9:49
