GNSS (all systems)

May 27, 2012

GNSS Hotspots | May 2012

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST

1. GROWTH SPURT
California/Nevada, USA
√ The age of the Sierra Nevada mountains — home of Yosemite Valley and Lake Tahoe — is puzzling to geodesists. Integrating GPS and inSAR, Universities of Nevada and Glasgow teams studied the area’s uplift and found that it is growing by 1 to 2 millimeters per year. The verdict? The entire range could have arisen in less than 3 million years.

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By Inside GNSS
May 26, 2012

Stanford and Aalborg Announce Summer Workshop on GNSS Positioning for the Future

A number of GNSS experts from the United States, Denmark, Norway and China will lead a weeklong workshop on the future of satellite-based positioning technologies from August 27 through September 2 at the Slettestrand Holiday Center in North Jutland, Denmark.

The topics range from GNSS basics and Intelligent Transportation Systems to new GNSSes, new receivers and indoor navigation as well as environmental monitoring and arctic navigation. The event is organized by Stanford and Aalborg universities.

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By Inside GNSS
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
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CGSIC: 2012 Civil GPS Interface Committee Meeting

The Civil GPS Interface Committee (CGSIC) will meet during the ION GNSS 2012 conference at the Nashville Convention Center in Tennessee, USA on Monday, September 17 and Tuesday, September 18. This will be the 52nd meeting of the group.

The plenary session on Tuesday morning features updates by the U.S. National Space-Based PNT director, the Air Force GPS Directorate commander,  the Air Force Second Space Operations Squadron commander and State Department and Homeland Security senior officials.

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By Inside GNSS
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

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
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TRANSNAV 2013: Marine Navigation and Safety of Sea Transportation

Transnav 2011

The 10th TRANSNAV symposium will be held June 19-21, 2013 at Gdynia, Poland, a seaport and resort city on the south coast of the Baltic.

The biennial event is an opportunity for scientists and professionals in navigation, transport, ocean engineering and maritime technology to share knowledge and research on all aspects of maritime navigation and safety of sea transportation. The symposium is held in English.

The organizers expect 300 participants from 50 countries or more.

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By Inside GNSS
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

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

ICG Workshop on GNSS spectrum protection, interference detection and mitigation

The International Committee on GNSS will hold a workshop on GNSS spectrum protection, interference detection and mitigation on June 7 and 8, 2012 in the United Nations International Centre in Vienna, Austria.

The workshop will take place in conference room M-7. It will be held in conjunction with the Committee on the Peaceful Uses of Outer Space (COPUOS) 2012 session, which runs from June 6 to June 16.

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By Inside GNSS

9th Annual Time and Frequency Metrology Seminar

The National Institute of Standards and technology (NIST) offers this comprehensive course on clocks, oscillators, atomic frequency standards, quantum information and more for those who work with time and frequency systems at all levels of experience.

The seminar will take place June 5 through 8 at the NIST laboratories in Boulder, Colorado, source of the United States’ official time.

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By Inside GNSS
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