Design & Test

New Version of GAPS PPP Software Available

March 10, 2015By

A new version of the online GAPS precise point positioning software is now available. GAPS — GPS Analysis and Positioning Software — is offered by the University of New Brunswick Geodesy and Geomatics Engineering Department. The latest release provides capabilities for handling GPS data files in both RINEX 2 and 3 formats, whether Hatanaka-compressed or not, along with a number of receiver raw file formats. Also,... read more

Spirent Enhances GNSS Record and Playback System

March 10, 2015By

Spirent Communications has added capabilities to its ultra-wideband GSS6425, which enable recording up to 150MHz bandwidth of GNSS signals. Users can now record up to three RF frequency bands at any one time with 10-, 30- or 50-MHz bandwidth each. Other enhancements include the ability to record up to four video streams, USB 3.0 support and easy remote-control using tablet or smartphone. A... read more

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Antenna Array and Receiver Testing with a Multi-RF Output GNSS Simulator

March 6, 2015By

This article discusses the GALANT adaptively steered antenna array and receiver, demonstrating the test scenarios generated with the GNSS simulator. Exemplary results of different static and dynamic test scenarios are presented, validating the attitude determination capabilities as well as the interference detection and mitigation capabilities. read more

Innovation: Where Are We?

March 5, 2015By
FIGURE 4. Trajectory solutions.

Positioning in Challenging Environments Using Ultra-Wideband Sensor Networks
The use of large transmission bandwidths offers a number of benefits, including accurate ranging and that application in particular is being actively developed for positioning and navigation in environments that are challenging to GNSS such as indoors and built-up areas. In this month’s column, we take a look at the work being carried out in this area by a team of researchers at The Ohio State University. read more

Langley’s Ionosphere Research Focus of CBC Report

March 5, 2015By

CBC News interviewed GPS World Innovation Editor Richard Langley about his ionosphere interference research project with NASA, reported on earlier this week. Langley, a professor at the University of New Brunswick, is working with the Jet Propulsion Laboratory in California to better understand how the ionosphere is disturbed by a variety of phenomena including solar outbursts and other natural hazards such as... read more

MWC 2015: Rohde & Schwarz Adds Testing for Russia’s Emergency Calling

March 5, 2015By

Effective January 1, 2015, all new car models introduced to the Russian market must be equipped with the automatic ERA-GLONASS emergency call system. Rohde & Schwarz now offers a standard compliant test solution for manufacturers and suppliers of these in-vehicle systems. Rohde & Schwarz is demonstrating its ERA-GLONASS test setup at Mobile World Congress, being held this week in Barcelona,... read more

GPS World Simulator Buyers Guide

March 3, 2015By

The GPS World Simulator Buyers Guide, from the March 2015 issue, features the latest simulators from seven top companies. read more

BeiDou Numbering Presents Leap-Second Issue

March 3, 2015By

During preparation of playback scenarios for the upcoming leap-second event taking place in June, engineers at Racelogic identified a potential pitfall for GNSS engineers. The difficulty arises from the fact that BeiDou uses a different “day number” for the date to apply the leap second, compared with GPS and Galileo. GPS and Galileo use 1-7 as week day numbers, and... read more