The performance of GPS standard positioning service without selective availability

Tian-Yuan Shih; H. Y. Shih; M. Yang

doi:10.1179/003962601791483560

The performance of GPS standard positioning service without selective availability

Tian-Yuan Shih^*, H. Y. Shih, M. Yang

^*Corresponding author for this work

Department of Civil Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The accuracy of the Standard Positioning Service of GPS has greatly improved after the termination of Selective Availability. Based on GPS observations from permanent GPS-fixed stations, the actual accuracy of GPS without SA is analyzed. For Station NCTU, the local geodetic coordinates are computed with the C/A code pseudo-ranges, and then transformed into a local grid system with Trans-Mercator projection. From 77984 single epoch observations collected in twenty-nine days, the 95% accuracy is found to be ΔE : 17.6544m, ΔN : 11.8236m, ΔH : 31.8018m. For five selected UNAVCO stations, the axes of error ellipsoid are computed.

Original language	English
Pages (from-to)	192-201
Number of pages	10
Journal	Survey Review
Volume	36
Issue number	281
DOIs	https://doi.org/10.1179/003962601791483560
State	Published - 1 Jan 2001

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title = "The performance of GPS standard positioning service without selective availability",

abstract = "The accuracy of the Standard Positioning Service of GPS has greatly improved after the termination of Selective Availability. Based on GPS observations from permanent GPS-fixed stations, the actual accuracy of GPS without SA is analyzed. For Station NCTU, the local geodetic coordinates are computed with the C/A code pseudo-ranges, and then transformed into a local grid system with Trans-Mercator projection. From 77984 single epoch observations collected in twenty-nine days, the 95% accuracy is found to be ΔE : 17.6544m, ΔN : 11.8236m, ΔH : 31.8018m. For five selected UNAVCO stations, the axes of error ellipsoid are computed.",

author = "Tian-Yuan Shih and Shih, {H. Y.} and M. Yang",

year = "2001",

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doi = "10.1179/003962601791483560",

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AU - Shih, Tian-Yuan

AU - Shih, H. Y.

AU - Yang, M.

PY - 2001/1/1

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N2 - The accuracy of the Standard Positioning Service of GPS has greatly improved after the termination of Selective Availability. Based on GPS observations from permanent GPS-fixed stations, the actual accuracy of GPS without SA is analyzed. For Station NCTU, the local geodetic coordinates are computed with the C/A code pseudo-ranges, and then transformed into a local grid system with Trans-Mercator projection. From 77984 single epoch observations collected in twenty-nine days, the 95% accuracy is found to be ΔE : 17.6544m, ΔN : 11.8236m, ΔH : 31.8018m. For five selected UNAVCO stations, the axes of error ellipsoid are computed.

AB - The accuracy of the Standard Positioning Service of GPS has greatly improved after the termination of Selective Availability. Based on GPS observations from permanent GPS-fixed stations, the actual accuracy of GPS without SA is analyzed. For Station NCTU, the local geodetic coordinates are computed with the C/A code pseudo-ranges, and then transformed into a local grid system with Trans-Mercator projection. From 77984 single epoch observations collected in twenty-nine days, the 95% accuracy is found to be ΔE : 17.6544m, ΔN : 11.8236m, ΔH : 31.8018m. For five selected UNAVCO stations, the axes of error ellipsoid are computed.

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SP - 192

EP - 201

JO - Survey Review

JF - Survey Review

IS - 281

ER -

The performance of GPS standard positioning service without selective availability

Abstract

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