DEVELOPMENT OF IONOSPHERIC TOMOGRAPHY MODEL USING GPS
نویسندگان
چکیده
منابع مشابه
Ionospheric Calibration of Radar Altimeters Using GPS Tomography
We compare TEC measurements from the NASA Radar Altimeter and DORIS instrument on board TOPEX/POSEIDON with GPS TEC estimates , and evaluate diierent GPS data analysis strategies. We verify that global tomographic GPS analysis using a voxel grid is well suited for ionospheric calibration of altimeters. We show that a 1-day t of 20-second-averaged NRA ionospheric correction data versus GPS tomog...
متن کاملReal-time Ionospheric Tomography Using Terrestrial GPS Sensors
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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The most demanding application of wide area di erential corrections to GPS is vertical positioning of aircraft on precision approach. Here the Wide Area Augmentation System (WAAS) combines accuracy requirements on the order of ones of meters with safety of life integrity requirements which specify that any vertical position errors greater than the Vertical Protection Limit be enunciated to the ...
متن کاملImproving the vertical resolution of ionospheric tomography with GPS occultations
We combine GPS/MET data from 29 occultations and IGS ground data collected from 160 stations around the world to perform stochastic tomography of the ionosphere with a 4×20×20 global grid of voxels extending from 200 to 650 km above the mean surface of the Earth. A correlation functional approach that limits the spatial high frequency content of the images is used, and a Kalman filter is applie...
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We estimate spatial gradients in the ionosphere using the Global Positioning System (GPS) and GLONASS (Russian global navigation system) observations, utilising data from multiple GPS stations in the vicinity of Murchison Radio-astronomy Observatory (MRO). In previous work the ionosphere was characterised using a single-station to model the ionosphere as a single layer of fixed height and this ...
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ژورنال
عنوان ژورنال: Journal of Astronomy and Space Sciences
سال: 2006
ISSN: 2093-5587
DOI: 10.5140/jass.2006.23.3.237