Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
TABLE 1: Deployment Status Note: Two types of clocks on board: PHM = Passive Hydrogen Maser, RAFS = Rubidium Atomic Frequency StandardEurope’s new age of satellite navigation has passed a historic milestone — the very first determina-tion of a ground location using the four Galileo satellites currently in orbit together with their ground facilities.
This fundamental step confirms the Galileo system works as planned.
By Inside GNSS
Bayes RuleEngineering specialties
Navigation research and development is truly an interdisciplinary enterprise. I have focused on
By Inside GNSS
One of my fond memories as a boy growing up in rural northeastern Oregon is sitting on an apple box in the basement of our house reading back issues of National Geographic.
All those wonderful color photos. And the maps, with their little illustrated explanations of Roman ruins in England or Babylonian irrigation practices in the Fertile Crescent!
By Inside GNSS
The U.S. Air Force Space Command (AFSPC) invited comments today (March 20, 2013) on its proposed plans to test CNAV message capabilities on the GPS L2C and L5 signals June 15–29.
The signals are part of the GPS modernization program and will provide, among other things, greater capability for civilian users. The notice was posted in the official government Federal Register.
By Inside GNSS
It’s spring and privacy proposals are popping up in abundance, threatening to complicate the lives of law enforcement officers, spoil the landscape for some location-based businesses, and choke off the U.S. market for commercial unmanned aerial systems (UAS) before it gets off the ground.
By Dee Ann Divis
Measurements of individual Galileo horizontal position fixes performed for the first time using the four Galileo satellites in orbit plus the worldwide ground system between 1000 and 11:00 CET on Tuesday 12 March 2013, showing an overall horizontal accuracy over ESTEC in Noordwijk, the Netherlands, of 6.3 meters. ESA figureThe European Space Agency (ESA) has announced a key milestone today (March 12, 2013) in the development of Europe’s GNSS program: the first determination of a ground location using the four Galileo satellites currently in orbit together with the system’s ground infrastructure.
This fundamental step confirms the Galileo system works as planned, according to ESA scientists.
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.
View equations 1-4
View Equations 5-13
Q: What are the differences between least-squares and Kalman filtering?
By Inside GNSS
