TAG: GPS III

The System: Leap-Second Confusion

March 1, 2015By

The United States Civil GPS Service Interface Committee (CGSIC) has issued a notice about a problem some receivers are having implementing the correct time. The U.S. Coast Guard Navigation Center has received reports of synchronization issues since the implementation of a leap second on Jan. 21. Users experiencing this problem should contact the receiver manufacturer for a firmware or software... read more

Obstacles in the Orbit Path of GPS III

February 25, 2015By

A Lockheed Martin vice president has stated that the first GPS III satellite will likely launch in 2017, not 2016 as had been projected in the most recent update. The company is readying the first satellite for launch availability by the end of 2015, for launch as early as the end of this year, but Space News reports that Mark... read more

USAF FY16 Budget Plus $10B More, Please!

February 11, 2015By

The long-anticipated 2016 President’s Budget (PB) was submitted to Congress in early February. The PB is the spark that ignites the lengthy and often contentious congressional budget process, including: adopting a budget resolution framework, developing numerous discretionary spending bills, reconciling legislation between the House and Senate, approving continuing resolution stop-gap measures and finally, hopefully, appropriating funds for various programs — including the... read more

Air Force Orders Two More GPS III Satellites

February 2, 2015By

The United States Air Force plans to order two more GPS III satellites from contractor Lockheed Martin, according to SpaceNews. Lockheed Martin is under contract to build eight GPS III satellites, with the first planned to be launched in 2016. The contract includes options for up to four more satellites. However, the Air Force plans to open up construction of subsequent GPS satellites for... read more

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The System: ESA’s Second FOC Moves Up

February 1, 2015By
The fifth Galileo satellite is now pointing toward Earth.

By Tim Reynolds, GPS World European correspondent Director General Jean-Jacques Dordain of the European Space Agency (ESA) announced Jan. 16 that the second errant full-operational capability (FOC) satellite, launched in August, had started its orbital change maneuver the previous day. He anticipated that the orbital change would be completed and the final orbit — “albeit somewhat lower in height than the one... read more

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GPS III Command and Control Passes Key Test

January 5, 2015By
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Raytheon Company and Lockheed Martin successfully completed the fourth of five planned launch and early orbit exercises to demonstrate new automation capabilities, information assurance and launch readiness of the U.S. Air Force’s next-generation GPS III satellite and Operational Control System (OCX). Successful completion of Exercise 4, on Oct. 3, represents a key milestone demonstrating the end-to-end capability to automatically transfer... read more

Directions 2015: What It Takes to Make a Gold Standard

December 1, 2014By
GPS-directions-Cooley

Last year in my “Directions” article, I emphasized the commitment made by the U.S. government to ensure GPS signals are available to all users, and I shared some of our excitement in the GPS Directorate regarding the modernized capabilities we are developing and fielding. This year I’d like to share with you progress we’ve made in the past 12 months, provide an update on the modernization initiatives, and challenge civil users and receiver companies to innovate and accelerate these modernized capabilities for users worldwide. read more

The System: Fregat Design Ambiguity Steered Galileo Wrong

November 1, 2014By

Cross-Installed Hydrazine, Helium Lines Froze Thrusters The root cause of the anomaly that sent two Galileo satellites into the wrong orbit on August 22 was a shortcoming in the system thermal analysis performed during stage design, and not an operator error during stage assembly, according to findings by an independent inquiry board. The independent inquiry board was created by Arianespace,... read more

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