Global Navigation Satellite Systems Engineering, Policy, and Design
The 11th Intelligent Transportation Systems (ITS) European Congress and industry exhibition will be held at the Scottish Exhibition and Conference Centre (SECC) in Glasgow, Scotland June 6 – 9, 2016.
By Inside GNSS
A new international conference on advanced GNSS and 3D spatial techniques will be held at the University of Trieste, Main Conference Room, H3 Building, on February 18, 19 and 20. It is free to participants.
The conference will focus on GNSS applications for civil and environmental engineering, geophysiques, architecture, archaeology and cultural heritage. It has been organized in memory of Giorgio Manzoni, professional of surveying and mapping at the university.
By Inside GNSS
The 23rd International Conference on Integrated Navigation Systems will take place in St. Petersburg, Russia on May 30 – June 1, 2016.
The event is being held during the lively "White Nights" tourist season, when the sun stays up until 11 p.m. or later. Guided city tours will be arranged for the participants of the Conference.
By Inside GNSS
GAGAN — India’s SBAS
Redefining Navigation over the Indian Region
Recognizing the potential benefits of satellite-based augmentation systems, India took the early initiative to create its own SBAS called GAGAN — GPS Aided Geo Augmented Navigation.
Europe’s space community rang in the New Year with two of its brightest annual fixtures: the European Union (EU) Space Policy conference in Brussels and the European Space Agency (ESA) media briefing in Paris.
The events brought out all of the relevant voices and served to illustrate not only the disposition of materiel and troops but also their intent and even the level of morale.
By Peter Gutierrez
Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
With the support of the European Space Agency (ESA), a European team designed a frequency- and time-transfer process and validated its performance in a complex navigation test bed. This two-way time-transfer technology took advantage of the following:
By Günter W. Hein
Q: What is Doppler collision and is it a problem in GNSS?
A: Doppler collision is a physical effect in code-division multiple access (CDMA) systems where code measurement errors are observed due to cross-correlation effects. Doppler collision may occur when the Doppler frequency between signals from two different transmitters is smaller than the code lock loop bandwidth.
By Inside GNSS
The GPS Aided Geo Augmented Navigation (GAGAN) system was developed by the Indian Space Research Organization (ISRO), together with Airports Authority of India (AAI), to deploy and certify an operational satellite-based augmentation system (SBAS). The system’s service area covers the Indian Flight Information Region (FIR), with the capability of expanding to neighboring FIRs.
By Inside GNSS
In satellite navigation, the user receiver finds its position by measuring its distance to satellites and knowledge of the satellite position. The distance is measured by ranging, i.e., finding the delay of the signal from the transmitter to the receiver. The delay will comprise of payload hardware delay and the geometric range delay. Hence, the payload delay of the signal from generation to radiation is very important and needs to be transmitted in navigation data.
By Inside GNSS
Small GPS jammers, particularly the “personal privacy devices” readily available on the Internet, pose one of the greatest risks to the nation’s critical infrastructure, according to a now-public Homeland Security assessment.
By Dee Ann Divis
Having settled its lawsuits against a trio of GPS receiver manufacturers, would-be broadband provider New LightSquared is now pointing to those settlements to support its assertion that it is fully addressing GPS interference issues.
By Inside GNSS
It will be a busy few weeks for GNSS satellite launches in January and February.
Up next is the Wednesday (January 20, 2016) is a launch of the fifth spacecraft for the Indian Regional Navigation Satellite System (IRNSS). The Indian Space Research Organization plans to complete the IRNSS constellation with two additional launches in February and March.
By Inside GNSS
Once again, the National Transportation Safety Board (NTSB) has recommended GPS-aided positive train control (PTC) as one of its “most wanted” transportation safety improvements in 2016. But the agency, which has been advocating for PTC for more than 45 years, appears to be fighting an uphill battle against Congress and the railroad industry.
By Inside GNSS
