GNSS

GPS III and OCX Satellite Launch, Early Orbit Ops Successfully Demonstrated

September 13, 2013By
An artist’s rendering of the GPS III satellite.

Lockheed Martin and Raytheon Company successfully completed the third of five planned launch and early orbit exercises to demonstrate the launch readiness of the world’s most powerful and accurate Global Positioning System (GPS), the U.S. Air Force’s next-generation GPS III satellite and Operational Control System (OCX). Successful completion of Exercise 3, on August 1, was a key milestone demonstrating Raytheon’s... read more

Registration Opens for Munich Satellite Navigation Summit 2014

September 12, 2013By
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Registration is now open for Munich Satellite Navigation Summit 2014, which will be held March 25-27, 2014, at the Residenz Muenchen in Munich, Germany. The summit will have a booth (Booth H) in the exhibit hall at the ION GNSS+ conference next week in Nashville, Tennessee. The conference is offering a special ION rate for those who register no later... read more

CGSIC Agenda Released

September 10, 2013By

The 53rd meeting of the Civil GPS Service Interface Committee will be held Monday and Tuesday, September 16-17, before the Institute of Navigation GNSS+ 2013 Conference. Both events take place at the Nashville Convention Center, in Nashville, Tennessee. The meeting agenda is now available on the event website. Monday morning’s CGSIC concurrent sessions include the Timing Subcommittee and the Surveying,... read more

This article is tagged with , and posted in GNSS News, Government News, GPS Modernization, Latest News

Raytheon GPS Launch and Checkout Capability Cleared for Test

September 4, 2013By
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Raytheon Company has received Interim Authorization to Test (IATT) security certification for the Global Positioning System Next Generation Operational Control System (GPS OCX) Launch and Checkout System (LCS) four months ahead of schedule. Raytheon received a one-year certification with no liens, meaning the government does not require any changes. The LCS IATT certification enables Raytheon to move to the next... read more

This article is tagged with , and posted in Featured Stories, GNSS News, GPS Modernization, Latest News

Registration Opens for ION PTTI 2013 Conference

September 3, 2013By

Registration is now open for the Institute of Navigation’s (ION) Precise Time and Time Interval Meeting (PTTI) to be held December 2-5, 2013 (Tutorials will be held December 2) at the Hyatt Regency Bellevue, Bellevue, Washington. Registration and program information will be available online only. PTTI is an annual conference sponsored by ION with a technical program designed to disseminate... read more

This article is tagged with , and posted in GNSS News, Latest News, LBS/Wireless News, Timing

Galileo’s Secure Service Tested by Member States

September 3, 2013By
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EU Member States have begun their independent testing of the most accurate and secure signal broadcast by the four Galileo navigation satellites in orbit. Transmitted on two frequency bands with enhanced protection, the Public Regulated Service (PRS) offers a highly accurate positioning and timing service, with access strictly restricted to authorized users. “Galileo is in its In-Orbit Validation phase, planned... read more

This article is tagged with and posted in Featured Stories, Galileo, GNSS News, Latest News

The System: IRNSS Signal Close up

September 1, 2013By and

IRNSS Signal Close up By Richard Langley, Steffen Thoelert, and Michael Meurer The spectrum of signals from IRNSS-1A, the first satellite in the Indian Regional Navigation Satellite System, as recorded by German Aerospace Center researchers in late July, appears to be consistent with a combination of BPSK(1) and BOC(5,2) modulation. Figure 1 shows that, centered at 1176.45 MHz, the signal... read more

This article is tagged with and posted in Augmentation & Assistance, Galileo, GLONASS, GPS Modernization, The System

Expert Advice: Laser Reflectors to Ride on Board GPS III

September 1, 2013By
Figure 2. Structure and products of the Global Geodetic Observing System related to GPS performance.

By James J. Miller and John LaBrecque, NASA Headquarters, and A.J. Oria, Overlook Systems Technologies, Inc. Satellite laser ranging (SLR) and the results of combining SLR with GPS in the future will translate into significant performance advancements for generations to come, once it is fully implemented as part of the GPS III architecture. Simply put, SLR techniques will improve GPS... read more