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Navigation satellite clocks ticking, system to be expanded: ISRO

"The timekeepers are ticking." Every morning this declaration conveys help and not pressure to the Indian space office group that is dealing with the route satellite framework NavIC with just a single rubidium nuclear clock exchanged on rather than two in the six satellites. The expression flags that the nuclear tickers — that give locational information — in the six route satellites are working ordinarily. Three nuclear checks in the primary route satellite IRNSS-1A have as of now fizzled. 

"The timekeepers are ticking admirably. It's impractical to share the specialized subtle elements of mission administration for essential reasons. ISRO is receiving different procedures with the goal that best outcomes are gotten from its satellite frameworks," A.S. Kiran Kumar, Chairman, Indian Space Research Organization (ISRO) told IANS on Saturday over telephone. Sources near ISRO, on the state of obscurity, disclosed to IANS that two more nuclear checks in the satellite framework began demonstrating variations from the norm in this manner taking the aggregate number of fizzled tickers to five. 

"Subsequently as a precautionary measure and furthermore to develop the operational existence of satellites, the ISRO is running the NavIC framework with one clock exchanged on rather than two. On the off chance that the running clock bombs then the standby timekeepers will be exchanged on," sources said. The underlying arrangement was to keep two checks in the satellite on while keeping the third one on standby. Basically, the Indian Regional Navigation Satellite System (IRNSS) is like the GPS (Global Positioning System) of the US, Glonass of Russia, Galileo of Europe and China's Beidou. 

Each satellite has three tickers and an aggregate of 27 timekeepers for the route satellite framework (counting the standby satellites) were provided by a similar merchant. The timekeepers are essential to give exact locational information. "The tickers are functioning admirably. The signs are great. The swap satellite for IRNSS-1A will be sent up this year. As of now our framework is giving exact information even in territories populated with thick structures and backwoods ranges," said Tapan Misra, Director, Space Applications Center, ISRO. 

As per him, space division is an unforgiving business and thus mission administration is imperative. Misra said it is not just the nuclear checks in the Indian satellite route frameworks that have fizzled, the checks in the European framework Galileo too have bombed according to reports. 

The Indian space organization has joined with a few colleges in the nation to gauge the execution of NavIC framework, said Misra. The Rs 1,420 crore Indian satellite route framework NavIC comprises of nine satellites — seven in circle and two as substitutes. 

"We are now utilizing the NavIC framework for a few applications. The trade satellite for IRNSS-1A will be propelled in July or August. There are likewise plans to grow the NavIC framework by taking the quantity of satellites to 11 from seven," Kumar said. It is learnt that ISRO has the nuclear checks supplanted in the two standby NavIC satellites. 

Beginning July, 2013, the Indian space office has propelled seven route satellites. The keep going one was propelled on April 28, 2016. Each satellite has a life expectancy of 10 years. The NavIC framework was performing great till the three checks in IRNSS-1A — the primary satellite — bombed a few months back.

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