ENHANCEMENT POSITIONING PERFORMANCE USING MODIFIED PRECISE POINT POSITIONING (PPP) SOFTWARE
نویسندگان
چکیده
منابع مشابه
Outlier Detection Performance in Precise Point Positioning
With the development of iono-free solution, provision of IGS orbit and clock products, high precision GNSS positioning with a single receiver, usually named Precise Point Positioning (PPP), has been playing an increasingly important role in many applications. PPP is to obtain the highly precise coordinates of the receivers, so it is necessary to establish the mathematical model according to the...
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Using Precise Point Positioning (PPP) we show the potential for comparing frequency standards with time stabilities of under 300 ps in flicker phase noise for time periods of 1 to 10 d. This leads to comparisons at 1 part in 10 or better at 10 d. We compare short baseline PPP results with 2 hour data from the NIST Measurements System. We compare results from the NIST – USNO baseline with hourly...
متن کاملAnalysing the Zenith Tropospheric Delay Estimates in On-line Precise Point Positioning (PPP) Services and PPP Software Packages
As Global Navigation Satellite System (GNSS) signals travel through the troposphere, a tropospheric delay occurs due to a change in the refractive index of the medium. The Precise Point Positioning (PPP) technique can achieve centimeter/millimeter positioning accuracy with only one GNSS receiver. The Zenith Tropospheric Delay (ZTD) is estimated alongside with the position unknowns in PPP. Estim...
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In recent years, many national timing laboratories have installed geodetic Global Positioning System receivers together with their traditional GPS/GLONASS Common View receivers and Two Way Satellite Time and Frequency Transfer equipments. Many of these geodetic receivers operate continuously within the International GNSS Service (IGS), and their data are regularly processed by IGS Analysis Cent...
متن کاملPerformance Analysis of Several GPS/Galileo Precise Point Positioning Models
This paper examines the performance of several precise point positioning (PPP) models, which combine dual-frequency GPS/Galileo observations in the un-differenced and between-satellite single-difference (BSSD) modes. These include the traditional un-differenced model, the decoupled clock model, the semi-decoupled clock model, and the between-satellite single-difference model. We take advantage ...
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ژورنال
عنوان ژورنال: Journal of Al-Azhar University Engineering Sector
سال: 2023
ISSN: ['1687-8418']
DOI: https://doi.org/10.21608/auej.2023.310336