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Degradation of navigational accuracy with global positioning system during periods of scintillation at equatorial latitudes

Degradation of navigational accuracy with global positioning system during periods of scintillation at equatorial latitudes

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The effect of ionospheric scintillation on navigational accuracy with the GPS (global positioning system) in the equatorial region is presented. The accuracy of position fixing with the GPS as indicated by the PDOP (position dilution of precision) factor is degraded when the raypath from the satellite shows deep fading. It is understood that navigation, particularly using a moderately sophisticated GPS receiver, in the equatorial zone will be severely affected during maximum sunspot number years.

Inspec keywords: Global Positioning System; fading; radiowave propagation; ionospheric electromagnetic wave propagation; sunspots

Other keywords: navigational accuracy degradation; deep fading; raypath; GPS receiver; position dilution of precision; ionospheric scintillation; position fixing; Global Positioning System; equatorial latitudes; maximum sunspot number

Subjects: Radiowave propagation; Satellite communication systems; Radionavigation and direction finding

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