Improving ambiguity resolution using an ionospheric differential correction

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1 Citation (Scopus)

Abstract

Resolving the initial phase ambiguities of GPS carrier phase observations has always been considered an important aspect of GPS processing techniques. The influence of the ionosphere is one of the main problems in ambiguity resolution for carrier phase. In this study we are reviewing the ambiguity resolution problem under the new aspect of using ionospheric models over equatorial region for single frequency over short baseline distance. From the model, we can get differential ionospheric delay in sub-centimetre accuracy. This can also be used by a single frequency receivers for a short time in short baselines. Findings show improvements in the correction of the differential ionospheric error over short baselines. The ambiguities were resolved when the variance ratio increased and the reference variances decreased.

Original languageEnglish
Pages (from-to)6-12
Number of pages7
JournalEuropean Journal of Scientific Research
Volume29
Issue number1
Publication statusPublished - 2009

Fingerprint

Global positioning system
GPS
Baseline
Ionosphere
ionosphere
Variance Ratio
Processing
Receiver
Ambiguity
methodology
Model

Keywords

  • Ambiguity
  • Baseline
  • Differential GPS
  • Equatorial
  • Ionosphere
  • Single frequency

ASJC Scopus subject areas

  • General

Cite this

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title = "Improving ambiguity resolution using an ionospheric differential correction",
abstract = "Resolving the initial phase ambiguities of GPS carrier phase observations has always been considered an important aspect of GPS processing techniques. The influence of the ionosphere is one of the main problems in ambiguity resolution for carrier phase. In this study we are reviewing the ambiguity resolution problem under the new aspect of using ionospheric models over equatorial region for single frequency over short baseline distance. From the model, we can get differential ionospheric delay in sub-centimetre accuracy. This can also be used by a single frequency receivers for a short time in short baselines. Findings show improvements in the correction of the differential ionospheric error over short baselines. The ambiguities were resolved when the variance ratio increased and the reference variances decreased.",
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N2 - Resolving the initial phase ambiguities of GPS carrier phase observations has always been considered an important aspect of GPS processing techniques. The influence of the ionosphere is one of the main problems in ambiguity resolution for carrier phase. In this study we are reviewing the ambiguity resolution problem under the new aspect of using ionospheric models over equatorial region for single frequency over short baseline distance. From the model, we can get differential ionospheric delay in sub-centimetre accuracy. This can also be used by a single frequency receivers for a short time in short baselines. Findings show improvements in the correction of the differential ionospheric error over short baselines. The ambiguities were resolved when the variance ratio increased and the reference variances decreased.

AB - Resolving the initial phase ambiguities of GPS carrier phase observations has always been considered an important aspect of GPS processing techniques. The influence of the ionosphere is one of the main problems in ambiguity resolution for carrier phase. In this study we are reviewing the ambiguity resolution problem under the new aspect of using ionospheric models over equatorial region for single frequency over short baseline distance. From the model, we can get differential ionospheric delay in sub-centimetre accuracy. This can also be used by a single frequency receivers for a short time in short baselines. Findings show improvements in the correction of the differential ionospheric error over short baselines. The ambiguities were resolved when the variance ratio increased and the reference variances decreased.

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