Marc Weiss’ Compass Points
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GNSS Event that most signifies for you that GNSS has “arrived”
By Inside GNSSGNSS Event that most signifies for you that GNSS has “arrived”
By Inside GNSSIonospheric scintillations are rapid temporal fluctuations in both amplitude and phase of trans-ionospheric GNSS signals caused by the scattering of irregularities in the distribution of electrons encountered along the radio propagation path. The occurrence of scintillation has large day-to-day variability. The most severe scintillations are observed near the poles (at auroral latitudes) and near the equator (within ± 20 degrees of geomagnetic equator).
By Inside GNSSTrying to revive a years-dead federal program is usually the kind of hopeless task that even Sisyphus wouldn’t touch.
But determined supporters of eLoran are gaining ground in their effort to resurrect the cancelled radio-navigation network and, propelled by new worries over GPS jamming, they appear poised push the issue through.
By Dee Ann DivisWorking 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 GNSSSIDEBAR: Marc Weiss’ Compass Points
In a career spanning nearly the entire history of GNSS-enhanced metrology, Marc Weiss has been a key participant in projects that laid the foundation for accurate synchronization of atomic clocks around the world.
By Inside GNSS1. PAPER, PLEASE.
Silver Spring, Maryland USA
√ The USA will stop printing nautical charts next April, the end of a 150 year tradition. Why? “Declining demand, electronic and digital charts and federal budget realities,” said NOAA’s Office of Coast Survey. They will maintain and update PDFs of more than a thousand coastal charts and refer those who admire traditional lithography to private printers who can do the job.
Return to main article: "Finding the Right Algorithm"
By Inside GNSSReturn to main article: "Finding the Right Algorithm"
By Inside GNSSReturn to main article: "Finding the Right Algorithm"
By Inside GNSSReturn to main article: "Finding the Right Algorithm"
By Inside GNSSGNSS event that most signified to you that GNSS had “arrived”
Two events stand out:
By Inside GNSS
Editor’s Note: On November 19, Senator Roger Wicker (R-Mississippi), a member of the Senate Armed Services Committee, filed an amendment (No. 2185) to the FY 2014 National Defense Authorization Act (S. 1197),
Section 1082, that would limit the construction of satellite
positioning ground monitoring stations controlled by any foreign
government on U.S. soil. Such construction would require certification
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