GNSS

Lockheed Martin GPS III Prototype Validates Test Facilities

July 10, 2013By
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Lockheed Martin’s GPS III Non-Flight Satellite Testbed (GNST) has successfully completed a series of high-fidelity pathfinding events which validate the process and facility for vehicle integration checkout, as well as signals interference testing, that the next-generation satellites of GPS III will go through before delivery for launch. An innovative investment by U.S. Air Force under the original GPS III development... read more

2C or Not 2C: The First Live Broadcast of GPS CNAV Messages

July 8, 2013By

By Oliver Montenbruck, Richard B. Langley, and Peter Steigenberger Over the past several years, some users of the GPS navigation system have already benefitted from the addition of various new signals in addition to the legacy C/A- and P(Y)-code. With the introduction of the Block IIR-M satellites in 2005, a new civil signal (L2C) was transmitted on the L2 frequency,... read more

Experts Meet to Standardize Satellite Augmentation Systems

July 3, 2013By
The GPS global satellite navigation system has an accuracy of 5–10 m. Across our continent that accuracy is greatly sharpened to 1-2 m through the European Geostationary Navigation Overlay Service (EGNOS), an operational precursor to Europe’s coming Galileo global satnav system. EGNOS broadcasts augmented information through a trio of geostationary satellites linked to a network of monitoring ground stations.

More than 30 specialists overseeing the world’s five satellite navigation augmentation systems gathered in Russia last week, planning for a high-performance future with many more navigation satellites in orbit, reports the European Space Agency. The Satellite-Based Augmentation Systems (SBAS) Interoperability Working Group was hosted June 25–27 in St. Petersburg by Russia’s Roscosmos space agency and the Russian Academy of Sciences.... read more

This article is tagged with and posted in Augmentation & Assistance, GNSS News, Latest News

Russian Rocket Crashes, Three GLONASS Satellites Lost

July 2, 2013By
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A Russian Proton-M rocket carrying three GLONASS navigation satellites crashed soon after liftoff today from Kazakhstan’s Baikonur cosmodrome, reports rt.com (Russia Today). About 10 seconds after takeoff at 02:38 UTC, the rocket swerved, began to correct, but then veered in the opposite direction. It then flew horizontally and started to come apart with its engines in full thrust. Making an... read more

This article is tagged with and posted in GLONASS, GNSS News, Latest News

Innovation: Getting a Grip on Multi-GNSS

July 1, 2013By
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The International GNSS Service MGEX Campaign
GPS is almost 40 years old. While mass consumer use of GPS began only within the past decade or so, GPS was "born" during the Labor Day weekend of 1973, when about a dozen military officers and industry analysts under the leadership of Brad Parkinson met to consolidate the concept for a single satellite-based navigation system for the U.S. Department of Defense. Their proposal for NAVSTAR GPS was approved on December 22, 1973. The first satellite to be launched under the GPS program, on July 14, 1974, was the Naval Research Laboratory’s Navigation Technology Satellite (NTS) 1. read more

This article is tagged with and posted in BeiDou/Compass, From the Magazine, Galileo, GLONASS, GPS Modernization, Innovation

India Launches First Navigation Satellite

July 1, 2013By
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News courtesy of CANSPACE Listserv. The first satellite of the Indian Regional Navigation Satellite System (IRNSS) was successfully launched today. The launch of IRNSS-1A occurred on schedule at is scheduled for 18:13 UTC from the spaceport of Sriharikota. Liftoff from the first launch pad at the Satish Dhawan Space Centre occurred on schedule at 18:11 UTC. The 1,425-kg satellite was launched... read more

This article is tagged with , and posted in Augmentation & Assistance, Latest News

The System: ESA Reveals New Breed of FOC Satellite

July 1, 2013By
Galileo FOC: These pictures give the first detailed views of the next batch of Galileo satellites, the first of which has already been delivered to ESA for rigorous testing in simulated space conditions. Credit: OHB

The European Space Agency (ESA) has released detailed views of the next batch of Galileo satellites, the first of which cuurently performs under simulated space conditions at the ESTEC technical center in Noordwijk, the Netherlands. The first Galileo Full Operational Capability (FOC) satellite is functionally identical to the four Galileo In-Orbit Validation satellites already in orbit, but has been built... read more

This article is tagged with and posted in BeiDou/Compass, Galileo, GLONASS, GPS Modernization, The System

Expert Advice: Little Tigers versus Wolves

July 1, 2013By
“B1 ICD was released while Regional System is officially operational, will affect domestic BDS receiver industry? Pros? Cons?”

By Greg Turetzky, Intel I recently attended the Fourth China Satellite Navigation Conference (CSNC, held May 15–17 in Wuhan, China), as an invited speaker and panelist. I had attended the third CSNC last year in Guangzho, and as expected this year’s was a little bigger and a little better. The Chinese GNSS industry is growing quickly, as evidenced by the... read more