OEM

Official Opening of the German Galileo Test and Development Environment GATE

February 2, 2011By

On April 2, German Federal Minister of Transport, Building and Urban Development Peter Ramsauer will officially open the German Galileo test and development infrastructure GATE with the operator IFEN GmbH. read more

This article is tagged with , , , and posted in OEM

The System: FCC Asked to Authorize Potential Interferer

February 1, 2011By

In November, December, and January, a regulatory drama with high potential impact on the GPS signal and domestic U.S. GPS users began unfolding before the Federal Communications Commission (FCC). As this magazine goes to press on January 24, the issue remains far from resolved, although hearings and far-reaching decisions may have transpired by mid-February. A company called LightSquared applied to... read more

This article is tagged with , , , and posted in GNSS, OEM

Innovation: GNSS and the Ionosphere

February 1, 2011By
Figure 4. Photo of red and green auroras observed near Fredericton, New Brunswick, Canada (46 degrees north latitude) early on October 31, 2003. (Courtesy of Richard and Marg Langley.)

What’s in Store for the Next Solar Maximum?
Although the sun can become disturbed at any time, solar activity is correlated with the approximately 11-year cycle of spots on the sun’s surface. We are just coming out of a minimum in the solar cycle and headed for the next maximum, predicted to occur around the middle of 2013. How significantly will GNSS users be affected? In this month’s column, two ionosphere experts tell us what might be in store. read more

This article is tagged with , and posted in From the Magazine, Innovation, OEM

Spectracom Introduces 16-Channel GPS Simulator for Receiver Testing

January 31, 2011By

Spectracom, a global provider of time and frequency test and measurement solutions, will make available its new 16-channel GPS constellation simulator, the Pendulum GSG-55, in March. The GSG-55 is the latest in the Pendulum line of GPS receiver test instruments and part of its solution set for receiving, distributing, and validating GNSS systems. read more

This article is tagged with , and posted in Latest News, OEM

Innovation: The Distress Alerting Satellite System

January 1, 2011By
Cospas–Sarsat system.

Taking the Search out of Search and Rescue
In 1997, a Canadian government study determined that an improved search and rescue system would be one based on medium-Earth orbit satellites, which can provide full global coverage, can determine beacon location, and would need fewer ground stations. This month’s column examines the architecture of the GPS-based Distress Alerting Satellite System and takes a look at early test results. read more

This article is tagged with , , , , and posted in From the Magazine, Innovation, OEM

Dynamic Duo: Combined GPS/GLONASS Receivers in Urban Environments

January 1, 2011By
Aerial view of downtown Calgary from the southwest, with test trajectory shown in red.

The impact of adding GLONASS to HS-GPS is assessed using a software receiver operating in an actual urban canyon environment. Results are compared with standard and high sensitivity GNSS receivers and show a significant improvement in the availability of position solutions when GLONASS is added. An assisted high sensitivity receiver architecture is introduced which enables high fidelity signal measurements even in degraded environments. read more

This article is tagged with , , , , and posted in OEM

GNSS RF Compatibility Assessment: Interference among GPS, Galileo, and Compass

December 1, 2010By
Figure12

A comprehensive methodology combines spectral-separation and code-tracking spectral-sensitivity coefficients to analyze interference among GPS, Galileo, and Compass. The authors propose determining the minimum acceptable degradation of effective carrier-to-noise-density ratio, considering all receiver processing phases, and conclude that each GNSS can provide a sound basis for compatibility with other GNSSs with respect to the special receiver configuration. read more

This article is tagged with , , , , and posted in GNSS, OEM

GSA Releases First GNSS Market Monitoring Report

November 16, 2010By

The European GNSS Agency (GSA) has published a 2010 GNSS Market Monitoring report, providing key information in support of entrepreneurship in the satellite navigation sector. read more