Design & Test

Successful Testing — and Why It Is More Important Than Ever

March 2, 2015By

By John Pottle and Neal Fedora Precision matters. While “accuracy” is somewhat one-dimensional, “precision” is multi-faceted. We submit to you that whatever area of GNSS-based location you are interested in, precision matters today and will matter more in the future. In this column, we’ll explain why this is. Traditional test approaches involve taking measurements to evaluate fundamental performance, for example,... read more

Multiple RF Output Simulation

March 1, 2015By

Spectracom GSG-Series GNSS Simulators have added capability to provide multiple RF outputs for advanced testing where multiple receivers or antennas are in use in a single system. Typical examples include controlled radiation pattern antennas (CRPA) or heading/attitude receivers and systems. The intuitive StudioView software allows easy reconfiguration of test cases to change the conditions seen by one or all receivers... read more

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Study of Atmospheric ‘Froth’ May Help GPS Communications

February 26, 2015By
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GPS World Innovation editor Richard Langley has co-authored a study, described below, exploring how irregularities in Earth’s upper atmosphere can distort GPS signals, an important step toward mitigation. read more

Rohde & Schwarz Offers Simultaneous Time Domain and Spectrum Analysis

February 25, 2015By

Rohde & Schwarz has added the R&S RTM-K18 spectrum analysis and spectrogram option to its R&S RTM oscilloscope family, making the R&S RTM the only oscilloscope in its class that can analyze the time domain while simultaneously analyzing the spectrum, logic and serial protocol. Interactions such as those that occur in electronic devices with RF components are quickly analyzed in... read more

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When in Rome…Check Galileo’s Performance

February 20, 2015By
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The Thales Alenia Space plant in the eastern suburbs of Rome is home to a facility that provides a troubleshooting platform for the Galileo ground network and an assessment of the performance of the satnav constellation. read more

Third, Fourth Galileo FOC Satellites Confirmed Fit for Soyuz Launch

February 17, 2015By
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The third and fourth Galileo Full Operational Capability (FOC) satellites are a confirmed “fit” for their Arianespace Soyuz launch March 27, having made initial contact with the mission’s dual-payload dispenser in French Guiana, according to Arianespace. The fit check was completed over a two-day period inside the Spaceport’s S1A payload preparation building. The two satellites were installed separately, with the... read more

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DoT Hosts Third Workshop on GPS Adjacent Band Compatibility

February 13, 2015By

The U.S. Department of Transportation will host a third workshop to continue discussions of the GPS Adjacent Band Compatibility Assessment on March 12. The workshop will focus on the following topics: Identification of GPS and GNSS receivers to be considered for testing that are representative of the current categories of user applications Discussion of a GPS/GNSS receiver test plan. Anyone... read more

GATE Facility Recertified as Galileo Test Bed

February 11, 2015By

The German Galileo test and development infrastructure GATE has been recertified to serve as a Galileo open‐air test laboratory, for receiver integrity testing (RAIM) for safety‐of‐life (SoL) applications, and for Galileo SIS ICD conformance of signal characteristics and signal quality. The GATE facility, in Berchtesgaden, is operated by IFEN GmbH. Certification was conducted by TÜV SÜD, an international service corporation... read more