GPS Modernization

General Dynamics Awarded $26M for GPS III Communications

March 25, 2014By
GPS-III-AHI-O

General Dynamics Advanced Information Systems, a business unit of General Dynamics, has been awarded a $26 million contract from Lockheed Martin to support the U.S. Air Force GPS III  Network Communications Element (NCE). General Dynamics is already under contract with Lockheed Martin to produce the NCE for the first four GPS III space vehicles (SV01-SV04), as well as for the... read more

ENC GNSS 2014 Program Now Online

March 18, 2014By

The European Navigation Conference (ENC) will be held April 15-17, 2014, in the World Trade Center in Rotterdam, The Netherlands. The conference aims at technology, innovation, and business in the PNT domain (positioning, navigation, and timing). The conference program is now available for review online. Satellite navigation and positioning, using current operational systems like GPS and GLONASS, will be major... read more

This article is tagged with and posted in BeiDou/Compass, Galileo, GNSS News, GPS Modernization, Latest News

PNT Advisory Board Hears Air Force CNAV Plan

March 12, 2014By
PNTAdvBd-O

The U.S. National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board has published the minutes of its December 4–5, 2013, meeting, opening with a quote from Albert Einstein, “We cannot solve our problems with the same thinking we used when we created them,” courtesy of Board Chair Dr. James Schlesinger. Among many other topics addressed, the Board heard a report... read more

Comment Period on Pre-Operational CNAV Message Opens

March 5, 2014By
Carrier-to-noise ratio of L5 signals, measured on June 19, 2013, by  Zheng Yao and colleagues at Tsinghua University, China. Signals were analyzed from three GPS satellites whose PRN numbers are 1, 24, 25, and one QZSS satellites with the PRN of 193 at time of acquisition.

A Federal Register Notice has been published allowing for a 30-day comment period on the proposed CNAV message on L2C and L5. The notice seeks comment from the public and industry regarding plans by the U.S. Air Force to broadcast pre-operational L2C and L5 civil  navigation (CNAV) messages from certain GPS satellites beginning in April. The Department of Transportation is... read more

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

The System: Galileo Accomplishes In-Orbit Validation

March 1, 2014By

Galileo Accomplishes In-Orbit Validation Nucleus of Four Now Operational: It “Works, and Works Well” The European Space Agency (ESA) announced fulfillment of the in-orbit validation (IOV) of Galileo on February 10. IOV was achieved with four satellites, the minimum number needed to perform navigation fixes. “IOV was required to demonstrate that the future performance that we want to meet when... read more

New GPS IIF Satellite Launched

February 21, 2014By
A United Launch Alliance Delta IV lifts off from Space Launch Complex-37 with the Air Force's Global Positioning System (GPS) IIF-5 satellite. This launch marked the 25th Delta IV flight since the first flight in 2002.

News compiled with the assistance of CANSPACE listserv. After a brief delay due to concerns over solar radiation trends, the GPS IIF-5 satellite was successfully launched at the end of the designated launch window at 01:59 UTC on February 21. The satellite, attached to the launch rocket’s upper stage, was initially placed in a highly elliptical orbit. Following a third... read more

GNSS Vulnerable: What to Do?

February 18, 2014By

Too Much Sensitivity, Not Enough Robustness, Says Parkinson Brad Parkinson, the founding architect of GPS, told a UK conference that the system needs to be made more robust to ensure worldwide availability of services to users. His concerns over GPS availability relate to threats such as the loss of authorized frequency spectrum (implicitly creating licensed jammers), space weather due to... read more

GPS Satellite Launch Set for Thursday

February 18, 2014By
GPS IIF

The United Launch Alliance Delta 4 rocket family will launch a new GPS IIF satellite from Cape Canaveral Thursday night. Liftoff is scheduled for Thursday at 8:40 p.m. EST, at the start of a 19-minute launch opportunity, according to the United Launch Alliance. The window is timed to deliver the GPS IIF-5 satellite directly into Plane A of the navigation network... read more