Receiver clock-based integrity monitoring for GPS precision approaches

The errors in the vertical position and clock bias estimates obtained from GPS pseudo-range measurements are highly correlated. Therefore, the error in a vertical position estimate can be predicted if we know the clock bias estimation error. The latter can be estimated if the clock bias changes smoo...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 42; no. 2; pp. 636 - 643
Main Authors Bednarz, S., Misra, P.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Aircraft navigation
Bias
Clocks
Costs
Errors
Estimates
FAA
Geographic information systems
Global Positioning System
Instruments
Laboratories
Manufacturing
Monitoring
Position measurement
Satellite navigation systems
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Summary:The errors in the vertical position and clock bias estimates obtained from GPS pseudo-range measurements are highly correlated. Therefore, the error in a vertical position estimate can be predicted if we know the clock bias estimation error. The latter can be estimated if the clock bias changes smoothly and, therefore, predictably. The current technology appears capable of manufacturing clocks which can meet this smoothness requirement for airborne use within the constraints of size, weight, and cost. We discuss the theoretical basis and present empirical data from laboratory and field experiments with a commercial rubidium standard to explore the benefits of integrity monitoring for precision approaches based on the receiver clock.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2006.1642578