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Inside GNSS: Engineering Solutions from the Global Navigation Satellite System Community
GPS Galileo Glonass BeiDou Regional/Augmentation
Inside Unmanned Systems
Thought Leadership Series
BeiDou
October 2, 2012 - October 4, 2012
Gauteng, South Africa
August 27, 2012 - September 2, 2012
Slettestrand, Denmark
Inside GNSS • May/June 2012

GNSS Hotspots

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.

GNSS Solutions • May/June 2012

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

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.

Working Papers • May/June 2012

Difference Correlators

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.

June 19, 2013 - June 21, 2013
Gdynia, Poland
May 6, 2013 - May 10, 2013
Karlsruhe, Germany
September 1, 2012 - September 4, 2012
Giza, Egypt
June 7, 2012 - June 8, 2012
Vienna, Austria
July 23, 2012 - July 27, 2012
Olsztyn, Poland
Signals
Trimble
Trimble
Jammer Dectector
Sensonor
Spectracom
CAST
NovAtel
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