Results 21 to 30 of about 32,348,343 (303)

Optimization method for multi-constellation precise point positioning performance evaluation [PDF]

open access: yesJisuanji 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
doaj   +1 more source

Review and principles of PPP-RTK methods [PDF]

open access: yesJournal 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
openaire   +2 more sources

Performance investigation of LAMBDA and bootstrapping methods for PPP narrow-lane ambiguity resolution

open access: yesGeo-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
doaj   +1 more source

Quantitative Assessment of the Likelihood of Disputes in PPP Projects Using Fault Tree Analysis

open access: yesBuildings, 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
doaj   +1 more source

Review of PPP–RTK: achievements, challenges, and opportunities

open access: yesSatellite 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
doaj   +1 more source

Risk Sharing of Urban Underground Comprehensive Pipe Gallery PPP Project Based on Grey Relational Analysis [PDF]

open access: yesE3S 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
doaj   +1 more source

Preliminary Analysis of the Applicability of the GPS PPP Method in Geodynamic Studies

open access: yes, 2020
GNSS station movements as an indicator of the movement of the Earth’s crust are determined by many researchers with the use of various position and trend determination methods.
R. Pelc-Mieczkowska
semanticscholar   +1 more source

Public Private Partnership in Transportation Infrastructure: A Review on Toll Road Development [PDF]

open access: yesE3S 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
doaj   +1 more source

USING GNSS KINEMATIC PPP METHOD FOR VEHICLE POSITIONING

open access: yesSGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2011
M. Wrona
openaire   +2 more sources

Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections

open access: yesSensors, 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
doaj   +1 more source

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