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Optimization method for multi-constellation precise point positioning performance evaluation [PDF]
Jisuanji gongcheng, 2019 In order to reduce the number of parameters to be estimated and improve the positioning accuracy in the data processing of multi-constellation Precise Point Positioning(PPP),a performance evaluation method based on ambiguity integer solution for the ...
HE Wei,GUO Chengjun,TIAN Zhong
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Testing for PPP: Should we use panel methods? [PDF]
Empirical Economics, 2001 A common finding in the empirical literature on the validity of purchasing power parity (PPP) is that it holds when tested for in panel data, but not in univariate (i.e. country specific) analysis. The usual explanation for this mismatch is that panel tests for unit roots and cointegration are more powerful than their univariate counterparts.
MARCELLINO, MASSIMILIANO +2 more
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Geo-spatial Information Science, 2021 Precise point positioning with ambiguity resolution (PPP-AR) is a powerful tool for geodetic and time-constrained applications that require high precision.
Omer Faruk Atiz +4 more
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Quantitative Assessment of the Likelihood of Disputes in PPP Projects Using Fault Tree Analysis
Buildings, 2022 Disputes involved in public–private partnership (PPP) projects destroy the relationship between governments and private partners and generate huge losses.
Xiaoxiao Zheng +3 more
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Review and principles of PPP-RTK methods [PDF]
Journal of Geodesy, 2014 PPP-RTK is integer ambiguity resolution-enabled precise point positioning. In this contribution, we present the principles of PPP-RTK, together with a review of different mechanizations that have been proposed in the literature. By application of $$\mathcal {S}$$
Teunissen, Peter, Khodabandeh, Amir
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Review of PPP–RTK: achievements, challenges, and opportunities
Satellite Navigation, 2022 The PPP–RTK method, which combines the concepts of Precise of Point Positioning (PPP) and Real-Time Kinematic (RTK), is proposed to provide a centimeter-accuracy positioning service for an unlimited number of users.
Xingxing Li +6 more
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Risk Sharing of Urban Underground Comprehensive Pipe Gallery PPP Project Based on Grey Relational Analysis [PDF]
E3S Web of Conferences, 2021 In order to establish a reasonable, effective and accurate risk sharing mechanism for PPP project of urban underground comprehensive pipe gallery, 25 risk factors are identified by the work structure decomposition method.
Shixia Duan, Jielin Diao
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Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections
Sensors, 2016 Real-time single frequency precise point positioning (PPP) is a promising technique for high-precision navigation with sub-meter or even centimeter-level accuracy because of its convenience and low cost. The navigation performance of single frequency PPP
Liang Li +5 more
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Public Private Partnership in Transportation Infrastructure: A Review on Toll Road Development [PDF]
E3S Web of Conferences, 2023 Public-private partnerships (PPPs) have become an increasingly important tool for delivering infrastructure and public services worldwide. In Toll Road development, PPP scheme is often being used to deliver public infrastructure. PPPs have received a lot
Steelyana Evi, Kinanti Dhea
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A mixed-methods comparison of the performance of Dutch PPP and non-PPP infrastructure projects
, 2022 Rijkswaterstaat, the Netherlands' major procurer of transport infrastructure, uses two primary contract types: Design and Construct (D&C) and Design-Build-Finance-Maintain (DBFM). In this chapter, we comparatively analyze the cost and time performance of these contract types using quantitative financial data on DBFM (N=12) and large D&C ...
van Meerkerk, Ingmar +6 more
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