Global Navigation Satellite Systems Engineering, Policy, and Design
[Updated July 4] The world’s dominant mode of timekeeping, Coordinated Universal Time (UTC), took on another leap second on Saturday, June 30 at 23:59:60 UTC.
And then the fun began: the addition caused software handling Internet services such as LinkedIn, Pinterest, Mozilla, Reddit, StumbleUpon, Yelp, FourSquare and Gawker to behave unpredictably or even crash over the weekend.
By Inside GNSS
Time is short — the European Satellite Navigation Competition, aka Galileo Masters — is seeking the best GPS and GNSS applications ideas for this year’s contest. The deadline has been extended one week to Sunday, July 8.
By Inside GNSS
Central area, Emperors Palace convention center and resortThe Geo-Information Society of South Africa will hold its 2012 conference and exhibition, GISSA Ukubuzana*, on October 2, 3 and 4 at the Emperors Palace Convention Centre, Jones Road, Kempton Park in Gauteng. A free shuttle bus is available every 20 minutes from Johannesburg’s O.R. Tambo (ORTIA) airport to the convention center.
The theme is "An African Dialogue: Geomatics for Infrastructure Development and Service Delivery."The keynote speaker will be Dean Angelides, ESRI’s corporate director for international operations.
By Inside GNSS
Northern Jutland PeninsulaA seven day workshop on GNSS and Positioning for the Future will be held at a Jutland (North Sea) resort in Denmark from August 27 through September 2, 2012. It is open all those with an interest in satellite positioning and navigation but limited to the first 50 registered participants.
The workshop will cover GNSS basics, new satellite navigation systems, arctic navigation, intelligent transportation systems and environmental monitoring, with lectures by international experts in those fields. The program and full list of lecturers are available on the event website.
By Inside GNSS
Spirent Communications has announced the launch of its new eight-channel GSS6300M Multi-GNSS simulator designed for integration, verification, and production testing where a quick and accurate functional test is needed.
The platform supports simulation of signals from individual or combined GPS/SBAS, GLONASS, and Galileo constellations with up to 24 channels are supported with 8 channels of simulation per constellation.
Business School, University of Nottingham Jubilee CampusThe Royal Institute of Navigation will hold a new navigator seminar and networking opportunity at the University of Nottingham on June 14, 2012 for new navigators, engineers, scientists and surveyors who are seeking careers in the industry.
Masters and doctoral level students will present on navigation and positioning topics, advanced undergraduates and postdocs will be in attendance. A number of industry and government representatives will exhibit or attend to listen to new research and meet the new talent.
By Inside GNSS
EQUATIONS 1 -11GLONASS currently uses a frequency division multiple access (FDMA) technique to distinguish the signals coming from different satellites in the Russian GNSS constellation. The GLONASS L1 and L2 bands are divided into 14 sub-bands, and each satellite transmits in one of these.
The sub-bands are identified by frequency numbers k, from -7 to 6. The GLONASS L1 and L2 carrier frequencies, in hertz, at a frequency number k are defined by:
FIGURE 2: Example of a national geoid (upper diagram) and a correction surface for the transformation from the new orthometric height system to the old height system (lower diagram). Country is Switzerland. Geoid undulations range from 45 to 55 meters in ETRS89 and from -5 to +5 meters in the national System CH1903+. Lower diagram: Correction surface to transform from the new orthometric height system (LHN95) to the old height system LN02 with corrections from -0.10 to 0.55 meters.Q: How do GNSS-derived heights differ from other height systems?
A: Height estimation using GNSS always seems to be trickier than horizontal coordinate estimation.
Why?
On the one hand, the GNSS technique has error sources that are more critical in the vertical direction. Height estimates are weaker because of a combination of satellite geometry, the presence of strong correlations to other parameters, such as atmospheric delays, and the antenna phase center model applied during data analysis.
By Inside GNSS
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.
By Inside GNSS
The Pyramid, a Karlsruhe landmarkIEEE’s giant robotics conference comes to Karlsruhe, Germany in 2013, with the theme "Anthropomatics-Technologies for Humans."
The event will take place at the Karlsruhe convention center (Knogresszentrum Karlsruhe) on May 6-10, 2013.
The conference covers every possible aspect of robotics development from body form and movement, programming and learning, hardware and software to lots of positioning, navigation and timing aspects.
By Inside GNSS
Billed as the "First International Conference" on new trends and applications of GNSS, this new event is sponsored and organized by the Space Science Center at Cairo University.
It will take place at Cairo University in Giza city from September 1 to 4 2012. The conference language is English.
Paper abstracts are due by July 15, midnight Cairo Standard Time. Submit them online at the website below.
With more services and signals, the GNSS landscape is changing and new trends and applications must be considered.
By Inside GNSS
High Gate in Old Town, OlsztynThe 2012 IGS workshop will take place at the University of Warmia and Mazury in Olsztyn, Poland from July 23 to 27.
The topic areas are:
By Inside GNSS
One of the natural wonders of Jeju island.The 2012 Korea GNSS Society (KGS) Conference, previously known as the GNSS Workshop, will be held on November 8 and 9 at Phoenix Island resort on Jeju, Korea.
The general chair is Philho Peter Park, Korea Astronomy and Space Science Institute.
The event has been held since 1994, when Korea’s GPS Technology Council (now GNSS) was established.
While the English language website has some information on deadlines and conference history, information on papers and registration is available in Korean only.
By Inside GNSS
