Characteristics of deep GPS signal fading due to ionospheric scintillation for aviation receiver design

Jiwon Seo, Todd Walter, Tsung Yu Chiou, Per Enge

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Deep and frequent fading of Global Positioning System (GPS) signals caused by ionospheric scintillation is a major concern for aircraft navigation using GPS in the equatorial region during solar maximum. Aviation receivers use both code and carrier measurements to calculate position solutions. Deep signal fading can break a receiver's carrier tracking lock to a satellite channel. The lost channel cannot be used for position calculation until the receiver reacquires the channel and reestablishes tracking. A solar maximum data set analyzed in this paper demonstrates frequent deep signal fading of almost all satellites in view. This could significantly reduce the number of simultaneous tracked satellites and consequently decrease navigation availability. Forty-five minutes of strong scintillation, which was the worst scintillation period of a 9 day campaign at Ascension Island in 2001, are analyzed in this paper. The importance of short reacquisition time of the receiver is described. In order to design an aviation receiver with short reacquisition time under frequent deep signal fading, the characteristics of signal fading should be well understood. Fading duration and the time between deep fades are two important characteristics for GPS navigation. This paper presents a fading duration model based on real scintillation data. The time between deep fades observed in this data shows very frequent deep fades which can significantly reduce benefit of carrier smoothing filters of aviation receivers.

Original languageEnglish
Article numberRS0A16
JournalRadio Science
Volume44
Issue number4
DOIs
Publication statusPublished - 2009 Dec 1

Fingerprint

signal fading
Global Positioning System
Scintillation
aeronautics
ionospherics
Aviation
scintillation
Global positioning system
GPS
receivers
Navigation
Satellites
navigation
fading
equatorial regions
smoothing
Aircraft
Availability
aircraft
availability

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)

Cite this

@article{976b2ec25bb740889eb84e16c4c58877,
title = "Characteristics of deep GPS signal fading due to ionospheric scintillation for aviation receiver design",
abstract = "Deep and frequent fading of Global Positioning System (GPS) signals caused by ionospheric scintillation is a major concern for aircraft navigation using GPS in the equatorial region during solar maximum. Aviation receivers use both code and carrier measurements to calculate position solutions. Deep signal fading can break a receiver's carrier tracking lock to a satellite channel. The lost channel cannot be used for position calculation until the receiver reacquires the channel and reestablishes tracking. A solar maximum data set analyzed in this paper demonstrates frequent deep signal fading of almost all satellites in view. This could significantly reduce the number of simultaneous tracked satellites and consequently decrease navigation availability. Forty-five minutes of strong scintillation, which was the worst scintillation period of a 9 day campaign at Ascension Island in 2001, are analyzed in this paper. The importance of short reacquisition time of the receiver is described. In order to design an aviation receiver with short reacquisition time under frequent deep signal fading, the characteristics of signal fading should be well understood. Fading duration and the time between deep fades are two important characteristics for GPS navigation. This paper presents a fading duration model based on real scintillation data. The time between deep fades observed in this data shows very frequent deep fades which can significantly reduce benefit of carrier smoothing filters of aviation receivers.",
author = "Jiwon Seo and Todd Walter and Chiou, {Tsung Yu} and Per Enge",
year = "2009",
month = "12",
day = "1",
doi = "10.1029/2008RS004077",
language = "English",
volume = "44",
journal = "Radio Science",
issn = "0048-6604",
publisher = "American Geophysical Union",
number = "4",

}

Characteristics of deep GPS signal fading due to ionospheric scintillation for aviation receiver design. / Seo, Jiwon; Walter, Todd; Chiou, Tsung Yu; Enge, Per.

In: Radio Science, Vol. 44, No. 4, RS0A16, 01.12.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characteristics of deep GPS signal fading due to ionospheric scintillation for aviation receiver design

AU - Seo, Jiwon

AU - Walter, Todd

AU - Chiou, Tsung Yu

AU - Enge, Per

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Deep and frequent fading of Global Positioning System (GPS) signals caused by ionospheric scintillation is a major concern for aircraft navigation using GPS in the equatorial region during solar maximum. Aviation receivers use both code and carrier measurements to calculate position solutions. Deep signal fading can break a receiver's carrier tracking lock to a satellite channel. The lost channel cannot be used for position calculation until the receiver reacquires the channel and reestablishes tracking. A solar maximum data set analyzed in this paper demonstrates frequent deep signal fading of almost all satellites in view. This could significantly reduce the number of simultaneous tracked satellites and consequently decrease navigation availability. Forty-five minutes of strong scintillation, which was the worst scintillation period of a 9 day campaign at Ascension Island in 2001, are analyzed in this paper. The importance of short reacquisition time of the receiver is described. In order to design an aviation receiver with short reacquisition time under frequent deep signal fading, the characteristics of signal fading should be well understood. Fading duration and the time between deep fades are two important characteristics for GPS navigation. This paper presents a fading duration model based on real scintillation data. The time between deep fades observed in this data shows very frequent deep fades which can significantly reduce benefit of carrier smoothing filters of aviation receivers.

AB - Deep and frequent fading of Global Positioning System (GPS) signals caused by ionospheric scintillation is a major concern for aircraft navigation using GPS in the equatorial region during solar maximum. Aviation receivers use both code and carrier measurements to calculate position solutions. Deep signal fading can break a receiver's carrier tracking lock to a satellite channel. The lost channel cannot be used for position calculation until the receiver reacquires the channel and reestablishes tracking. A solar maximum data set analyzed in this paper demonstrates frequent deep signal fading of almost all satellites in view. This could significantly reduce the number of simultaneous tracked satellites and consequently decrease navigation availability. Forty-five minutes of strong scintillation, which was the worst scintillation period of a 9 day campaign at Ascension Island in 2001, are analyzed in this paper. The importance of short reacquisition time of the receiver is described. In order to design an aviation receiver with short reacquisition time under frequent deep signal fading, the characteristics of signal fading should be well understood. Fading duration and the time between deep fades are two important characteristics for GPS navigation. This paper presents a fading duration model based on real scintillation data. The time between deep fades observed in this data shows very frequent deep fades which can significantly reduce benefit of carrier smoothing filters of aviation receivers.

UR - http://www.scopus.com/inward/record.url?scp=76749149611&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=76749149611&partnerID=8YFLogxK

U2 - 10.1029/2008RS004077

DO - 10.1029/2008RS004077

M3 - Article

VL - 44

JO - Radio Science

JF - Radio Science

SN - 0048-6604

IS - 4

M1 - RS0A16

ER -