Archives

Septentrio, QinetiQ Partnership Delivers Galileo PRS Signal Reception

March 12, 2012 - By

Another major milestone in the Galileo system’s development and deployment program has been achieved. Septentrio and QinetiQ, working in close partnership with the European Space Agency (ESA) and their industrial partners, achieved the world’s first successful reception of the encrypted Galileo Public Regulated Service (PRS) signal from the first Galileo satellites, launched in November 2011. The signal was received on... read more

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

How GLONASS, Galileo, and Compass Will Affect High-Precision Users

March 6, 2012 - By

Join GPS World's Survey and GIS Editor Eric Gakstatter March 15 for the webinar, "Everything Else but GPS: How GLONASS, Galileo, and Compass Will Affect High-Precision Users." The webinar will be held at 10 a.m. Pacific (1 p.m. ET/6 pm. GMT); registration is free. read more

This article is tagged with and posted in Newsletter Editorials, Opinions, Survey, Survey Scene

LightSquared: CEO, Executive VP Over and Out

March 5, 2012 - By

The LightSquared machine continues to implode as CEO Sanjiv Ahuja and Executive Vice President Martin Harriman resigned last week in the wake of the NTIA recommendations against LightSquared rolling out their system. This week, Bloomberg reported that Sprint will end its infrastructure sharing deal with LightSquared. Meanwhile, the FCC is accepting public comments on the NTIA's recommendations. read more

This article is tagged with and posted in Newsletter Editorials, Opinions, Survey, Survey Scene

UrsaNav Testing Wide-Area Timing Alternative

March 5, 2012 - By

As a result of a Cooperative Research and Development Agreement (CRADA) between the U.S. Coast Guard and UrsaNav, Inc., on-air tests are being conducted from the former Loran Support Unit site in New Jersey. One of the CRADA’s goals is to research, evaluate, and document a wireless technical approach as an alternative to GPS for providing precise time. The ability... read more

The System: NTIA, FCC Waiver No More on LS

March 1, 2012 - By

“We conclude that LightSquared’s proposed mobile broadband network will impact GPS services and that there is no practical way to mitigate the potential interference at this time.” These words from Lawrence Strickling, U.S. assistant secretary for communications and information and head of the National Telecommunications and Information Administration (NTIA), appear to signal the end of LightSquared’s run. Strickling’s letter to... read more

Galileo’s Surveying Potential: E5 Pseudorange Precision

March 1, 2012 - By

New Galileo signals have great potential for pseudorange-based surveying and mapping in both optimal open-sky conditions and suboptimal under-canopy environments. This article reviews the main features of Galileo’s E5 AltBOC and E1 CBOC signals, describes generation of realistic E5 and E1 pseudoranges with and without multipath sources, and presents anticipated horizontal positioning accuracy results, ranging from 4 centimeters (open-sky) to 14 centimeters (under-canopy) for E5/E1. read more

This article is tagged with , , , and posted in Galileo, GNSS, Mapping, Survey

The Business — March 2012

March 1, 2012 - By

Download the PDF. read more

This article is tagged with and posted in System and Business News, The Business

Sensing Location: Software Receiver Estimates Signal States During Outages

March 1, 2012 - By

Future safety-relevant driver assistant systems demand vehicle state estimations accurate enough to match the position within a road lane, which cannot be provided by standalone GPS. A promising approach to meet the requirements is the fusion of standalone or differential GNSS measurements with vehicle sensor data like odometers or accelerometers. To achieve deeper sensor integration, a software GNSS receiver was developed at the Institute of Flight Guidance (IFF) that is able to use dead reckoning sensors to support its signal acquisition. This article presents an approach to estimate the signal states during outages based on the tightly coupled vehicle state, which reduces the reacquisition time and significantly increases the signal availability. read more

This article is tagged with and posted in Road, Transportation