TAG: IRNSS

3 atomic clocks fail on 1 Indian satellite, replacement prepped

January 30, 2017By
IRNSS-B was launched April 4, 2014.

Three atomic clocks onboard a single satellite of the NAVIC Indian regional navigation satellite system have failed. Indian Space Research Organization (ISRO) Chairman A.S. Kiran Kumar told The Hindu newspaper that the agency is trying to restart the clocks. Kumar said the affected satellite, IRNSS-1A, is otherwise healthy, and the rest of the constellation is performing its core function of providing... read more

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Indian space agency asks industry to build spare satellites

September 9, 2016By

The Indian Space Research Organisation (ISRO) is finalizing plans to have two spare satellites for its navigation fleet built by private industry in the next two years, reports The Hindu. The seven-satellite NAVIC (Navigation Indian Constellation) — formerly known as IRNSS — is now complete. The Indian government will “handhold” industry for the first satellite, scheduled to be built by March 2017. The second satellite will... read more

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System of Systems: OCX passes first qualification

May 1, 2016By
BeiDou-22-O

OCX Passes First Qualification Raytheon, US Air Force Complete Test Milestone On March 4, Raytheon successfully passed the first formal qualification test milestone for the U.S. Air Force’s GPS Next Generation Operational Control System (GPS OCX). The new system offers significant improvements to the GPS on which the U.S. military and millions of civilians rely, including enhanced availability, accuracy and... read more

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IRNSS constellation nears completion

April 20, 2016By
IRNSS-1G being prepared for a pre-launch test. (Photo: ISRO)

India is expected to launch into orbit its seventh and final navigation satellite on April 28, thus completing the Indian Regional Navigation Satellite System (IRNSS). IRNSS-1G is expected to launch aboard a Polar Satellite Launch Vehicle (PSLV) rocket from India’s spaceport at Sriharikota in Andhra Pradesh at 12:50 local time. To date, India has launched six regional navigational satellites (IRNSS-1A, 1B, 1C,... read more

System of Systems: OCX to Cost More, Come Later

April 1, 2016By
The next-generation GPS ground-control system, known as OCX.

GPS III program slowed by funds diversion. The White House budget request for the Next Generation Operational Control System (OCX) comes to $393.3 million for fiscal year (FY) 2017. read more

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India’s IRNSS-1F satellite on countdown to launch

March 9, 2016By
Panoramic view of fully integrated PSLV-C32 with IRNSS-1F being moved to second launch pad (SLP).

The countdown for the launch of of a rocket carrying Indian Regional Navigation Satellite Sytem-IRNSS-1F began at 9:30 a.m. local time at the Sriharikota rocket port in Andhra Pradesh, reports the New Indian Express. The Polar Satellite Launch Vehicle (PSLV) is expected to blast off around 4 p.m. on Thursday, March 10, following a 54-hour 30-minute countdown. “Like the countdowns for the... read more

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System of Systems: GPS III bidding, testing

February 9, 2016By
IRNSS 1D in earlier lab testing.

GPS III Bidding Opens — Again The GPS Directorate at the Space and Missile Systems Center (SMC) continues to look for someone to build 22 GPS III satellites in the near future. SMC issued a request for proposals on Jan. 8, with rather complicated terms. The first eight GPS III satellites are already under contract, and two have been built,... read more

India’s fifth navigation satellite launched

January 20, 2016By
IRNSS-1E-launch-O

The fifth satellite in the Indian Regional Navigation Satellite System (IRNSS) constellation lifted off on time Jan. 20 from Satish Dhawan Space Center on Sriharikota Island, on India’s east coast. As in the previous four launches of IRNSS satellites, the navigation satellite rode aboard a Polar Satellite Launch Vehicle (PSLV). This is the 33rd launch for the PSLV. After the PSLV-C31 lift-off at 0401 GMT Wednesday (11:01... read more