Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website http://www.gpo.gov/fdsys; (3) the federal government Internet portal USA.gov; or (4) a web search conducted using a commercial search engine such as http://www.google.com.
Accession Number ADA580019
Title Accuracy/Precision of USNO Predicted Clock Estimates for GPS Satellites.
Publication Date 2012
Media Count 11p
Personal Author C. Hackman
Abstract The United States Naval Observatory (USNO) Earth Orientation Department GPS Analysis Division (GPSAD) processes data from hundreds of GNSS receivers daily, computing multiple GNSS carrierphase-based product sets 365 days/year. Quantities estimated typically include high-precision (1-3 cm) GNSS satellite orbits/clock corrections, receiver clock corrections, station coordinates, earth-orientation parameters (EOPs), and troposphere-delay estimates. The goal of the research presented herein is to improve the accuracy of USNO ultra-rapid satellite clock predictions.
Keywords Accuracy
Algorithms
Clocks
Errors
Global positioning system
Navigation satellites
Ppp(Precise point positioning)
Predictions
Quadratic prediction algorithms
Symposia


 
Source Agency Non Paid ADAS
NTIS Subject Category 72B - Algebra, Analysis, Geometry, & Mathematical Logic
76D - Navigation Systems
84G - Unmanned Spacecraft
Corporate Author Naval Observatory, Washington, DC.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1325
Contract Number N/A

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader