TAG: GPS modernization

CNAV Performance ‘Matches or Slightly Outperforms’ Legacy Signals

March 19, 2015By

A quarterly meeting of the U.S. GPS Program’s interagency Civil Navigation Signals (CNAV) Tiger Team on March 5 focused on the new L2C and L5 GPS civil signals. “CNAV Message Types 10, 11, 30 and 33 are currently transmitted on seven GPS IIR-M (L2C) and eight GPS IIF satellites (L2C and L5),” wrote Rick Hamilton, CGSIC Executive Secretariat, USCG Navigation Center, in a status email to the Civil Global Positioning System Service... read more

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GPS IIF-9 Prepped for March 25 Launch

March 18, 2015By

The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) has been encapsulated in the Delta IV rocket’s four-meter-diameter nose cone at a processing facility, and moved to the launch pad at Space Launch Complex 37 for mating to its booster inside the mobile service tower. Launch is scheduled for March 25 at 2:36 p.m. EDT (1836 GMT) from Space Launch Complex... read more

Raytheon GPS Ground Program Passes Review

February 9, 2015By

The ground control system (OCX) that Raytheon is developing for the next-generation GPS program has passed a Pentagon review, reports Reuters. The program will be monitored to ensure it stays on track, a senior Air Force official said on Feb. 6 as reported by the news service. Major General Roger Teague, director of space programs for the Air Force acquisition chief, said a review... read more

Delta Rocket Moves to Launchpad for March GPS Launch

February 9, 2015By

The Delta 4 rocket that will launch the next GPS satellite has been rolled out to the launch pad, reports Spaceflight Now. The satellite itself, GPS IIF-9, will be attached to the rocket in March. The United Launch Alliance vehicle is scheduled for launch March 25. The launch will be the 371st Delta rocket since 1960 and the 29th Delta 4 since 2002.... read more

GPS III Command and Control Passes Key Test

January 5, 2015By

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

GPS IIF-8 Launched Successfully from Cape Canaveral

October 29, 2014By

The U.S. Air Force launched the eighth GPS IIF satellite from Cape Canaveral Air Force Station in Florida today at 1:21 Eastern Time, as scheduled. An Atlas V 401 carried the GPS satellite aloft. GPS IIF-8 is one of the next-generation GPS satellites, incorporating various improvements to provide greater accuracy, increased signals, and enhanced performance for users. With this eighth satellite now launched, only four more Block... read more

Eighth GPS IIF Set to Launch Wednesday

October 23, 2014By
Artist's rendering of a Block IIF GPS satellite in orbit. (Credit: U.S. Air Force)

The Air Force is set to launch the eighth GPS IIF satellite from Cape Canaveral Air Force Station in Florida on October 29. The 18-minute launch window opens at 1:21 p.m. EDT. An Atlas V 401 will launch the GPS IIF-8 mission for the U.S. Air Force. The live webcast will begin at 1:01 p.m. EDT. As described by the Air Force, GPS IIF-8 is... read more

GPS III Payload Arrives, Platform Acceptance Tests Next

September 22, 2014By

Enter GPS III. The long-awaited navigation payload for the next-generation satellite pulled into its new temporary home over the September 13 weekend, the Lockheed Martin Space Systems facility in Littleton, Colorado. Lockheed is the U.S. Air Force’s  prime contractor for the first batch of eight GPS III satellites. Exelis Geospatial Systems has committed to delivering the payloads for the second,... read more