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Correlation of GPS signal fades due to ionospheric scintillation for aviation applications by Jiwon Seo; Todd Walter; Per Enge is a Physics and Astronomy article available to read on EtoBox.
What is Correlation of GPS signal fades due to ionospheric scintillation for aviation applications about?
Deep and frequent Global Positioning System (GPS) signal fading due to strong ionospheric scintillation is a major concern for GPSguided aviation in equatorial areas during high solar activity. A GPS aviation receiver may lose carrier tracking lock under deep fading, and a lost channel cannot be used for position calculation until lock is reestablished. Hence, frequent loss of lock due to frequent fading can significantly reduce the availability of GPS aviation. However, the geometric diversity of the satellites can mitigate scintillation impact on GPS aviation depending on the correlation level of deep fades between satellites. This paper proposes a metric to measure the correlation level of two fading channels from the perspective of GPS aviation. Using this metric, the satellite-to-satellite correlation is studied based on real scintillation data. The low satellite-to-satellite correlation shown in this paper envisions notable availability benefit from the geometric diversity of satellites under strong scintillation. In addition, this paper proposes a way to generate correlated fading processes with arbitrary correlation coefficients. Using this correlated fading process model,
Who reads Correlation of GPS signal fades due to ionospheric scintillation for aviation applications?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Jiwon Seo; Todd Walter; Per Enge
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0273-1177)
- Published
- 2011
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)