Ionospheric corrections for GPS time transfer
نویسندگان
چکیده
منابع مشابه
Ionospheric corrections for VLA observations using Local GPS data
We have conducted an experiment to evaluate the usefulness of ionospheric data produced using the Global Positioning System (GPS) for making Faraday rotation and interferometer phase corrections at the NRAO Very Large Array (VLA). Four GPS receivers were installed at the VLA site – one at the array center and one at the end of each arm. A simple ionospheric model consisting of a vertical TEC, a...
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Commonly available GPS receivers have, these days, hardware outputs of 1 pps. These receivers normally have the time accuracy within 100 ns. But if these are not calibrated in advance, they cannot be recommended for precise on-line applications. However, common view mode GPS time transfer using single satellite is in use for the generation of Coordinated Universal Time (UTC) by ensembling more ...
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We describe a method for removing ionospheric effects from single-frequency radio data a posteriori. This method is based on a theoretical climatological model developed by the USAF, which returns ne(~r, t) along the line of sight to the source. Together with a model of B⊕, ionospheric delay and Faraday rotation values ensue. If contemporaneous ionospheric data — GPS TEC observations or ionoson...
متن کاملPrecise Ephemerides for Gps Time Transfer
The present technology of atomic clocks rnotivatcs time transfer tcclrniques with nanosecond accuracy. Global Positioning System (GPS), the most colllnlon means for international time comparisons could achieve such acciiracy ovthr short, rlista~lccs (up to 1000 km). Over intercontinental distances the accuracy of the GPS tirrlc: transfer ranges between 20 and 30 ns. Some of the principal error ...
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As a member of the GPS Laboratory his research is focused on wide-area diierential GPS system design, analysis, and application. Mr.Hansen was a member of the technical staa at TASC, Inc. where he worked on DGPS, Loran-C, and Omega radionavigation systems before entering Stanford. He received his BSEE and MSEE from Worcester Polytechnic Institute. ABSTRACT We present a novel technique for estim...
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ژورنال
عنوان ژورنال: Radio Science
سال: 2014
ISSN: 0048-6604
DOI: 10.1002/2013rs005212