Carrier phase null space monitor for ionospheric gradient detection

A new carrier phase-based monitor is developed to instantaneously detect two-dimensional ionospheric gradients. In order to detect gradients at satellite acquisition, it is necessary for ground-based fault detection to rely directly on instantaneous ground facility measurements. The paper proposes a...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 50; no. 4; pp. 3230 - 3243
Main Authors Shahid, Kamran, Gurfil, Pini
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna measurements
Ionospheric gradients
Monitoring
Null space
Phase measurement
Satellite communication
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Summary:A new carrier phase-based monitor is developed to instantaneously detect two-dimensional ionospheric gradients. In order to detect gradients at satellite acquisition, it is necessary for ground-based fault detection to rely directly on instantaneous ground facility measurements. The paper proposes a new monitor (termed the null space monitor) by combining measurements from multiple, spatially separated ground antennas through a null space transformation. In addition, comparison results with previously published monitors show that the null space monitor covers the largest possible range of detectable ionospheric gradients.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2014.130330