Galileo

How do GNSS-derived heights differ from other height systems?
May 24, 2012

How do GNSS-derived heights differ from other height systems?

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.

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By Inside GNSS
Inertial Sensors and Systems 2012
May 23, 2012

Inertial Sensors and Systems 2012

An afternoon at the 2011 symposium

The Inertial Sensors and Systems symposium will take place at the Karlsruhe Institute of Technology in Karlsruhe, Germany on September 18 and 19, 2012. The conference will be held in English.

At this conference, formerly the Symposium Gyro Technology, the latest state of inertial sensors and navigation systems as well as gyro technology will be presented.

This includes applications of this technology, the development of new systems, components and test procedures as well as investigations on cost and marketing aspects.

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By Inside GNSS
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COSPAR 2012: Committee on Space Research Scientific Assembly

COSPAR 2012: Committee on Space Research Scientific Assembly

Ceremonial room in the Mysore Palace, now a public museum.

The 39th scientific assembly of COSPAR, the Committee On Space Research, willl take place from July 14 to July 22, 2012 at the Global Education Centre-2, Infosys Training Centre, Mysore, Karnataka, India. Mysore is known as the "City of Palaces."

The topics are fundmentals and relevance of space science and technological innovations and applications. Of particular interest to readers of Inside GNSS are sessions on atomic clocks, space weather, space debris, satellite dynamic and the ionosphere.

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By Inside GNSS
SIRGAS 2012

SIRGAS 2012

Calle peatonal Lota Bajo (Photo: Jorge González)

SIRGAS 2012, the annual working meeting of the organization in charge of the geocentric reference system for the Americas, will be held at the Universidad de Concepción auditorium in Concepción, Chile October 29 through 31, 2012.

The event will also be hosted by the Instituto Geográfico Militar of Chile.

In addition to the meeting sessions, a technical visit to the Transportable Integrated Geodetic Observatory (TIGO) of the German Federal Agency for Cartography and Geodesy (BKG) is scheduled.

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By Inside GNSS
IEEE ICRA 2013: International Conference on Robotics and Automation
May 22, 2012

IEEE ICRA 2013: International Conference on Robotics and Automation

The Pyramid, a Karlsruhe landmark

IEEE’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.

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By Inside GNSS
Conference on New Trends and Applications of GNSS

Conference on New Trends and Applications of 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.

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By Inside GNSS
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Korea GNSS Society Conference
May 21, 2012

Korea GNSS Society Conference

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.

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By Inside GNSS
British Military Claims Patent on GPS, Galileo Civil Signal Structure
April 27, 2012

British Military Claims Patent on GPS, Galileo Civil Signal Structure

Variations on the common GPS/Galileo MBOC signal

The British military establishment is seeking royalties from GPS receiver manufacturers, asserting it holds a patent on the technology at the heart of the new GPS and Galileo civil signals.

Should U.S. manufacturers have to pay royalties, American GPS users, who have already paid for the GPS constellation and made it available to the world free of charge, could find themselves spending more to use its location capabilities. Sources said the development could undermine relations between the U.S. and the European Union (EU), which have cooperated for years to develop a common signal at the L1/E1 frequency centered at 1575.42 MHz.

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By Inside GNSS
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