Results 11 to 20 of about 170,646 (300)

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   +4 more sources

Single-Frequency Precise Point Positioning Using Regional Dual-Frequency Observations

open access: yesSensors, 2021
High-precision and low-cost single-frequency precise point positioning (SF-PPP) has been attracting more and more attention in numerous global navigation satellite system (GNSS) applications.
Junping Zou, Ahao Wang, Jiexian Wang
doaj   +1 more source

Accuracy Assessment of Aircraft Positioning Using the Dual-Frequency GPS Code Observations in Aviation

open access: yesCommunications, 2020
This study publishes results of tests with regard to determination of the aircraft positioning accuracy by means of the GPS navigation in aviation.
Kamil Krasuski, Stepan Savchuk
doaj   +1 more source

Operation mode selection of NIMBY facility Public Private Partnership projects.

open access: yesPLoS ONE, 2021
Construction of not in my back yard (NIMBY) facility Public Private Partnership (PPP) projects are feasible measures to realize sustainable urbanization.
Hui Zhao, Jingqi Zhang, Yuanyuan Ge
doaj   +1 more source

Assessment of the Feasibility of PPP-B2b Service for Real-Time Coseismic Displacement Retrieval

open access: yesRemote Sensing, 2021
Traditional coseismic displacement retrieval generally uses real-time kinematic (RTK) and precise point positioning (PPP) services. However, both RTK and real-time PPP need a network link to transmit the corrected data.
Hao Yang   +5 more
doaj   +1 more source

Evaluation of PPP-ABS investment environment based on combined weighting of level difference maximization and TOPSIS method.

open access: yesPLoS ONE, 2023
Asset-backed securitization (ABS) is currently used to refinance public-private partnership (PPP) projects in the infrastructure field. To stimulate the investors' enthusiasm, this study evaluated the investment environment of PPP projects asset-backed ...
Lijun Zhang, Junwen Feng, Bo Feng
doaj   +1 more source

Measuring Global Poverty: Why PPP Methods Matter [PDF]

open access: yesReview of Economics and Statistics, 2013
Abstract We present theory and evidence to suggest that, in the context of analyzing global poverty, the EKS approach to estimating purchasing power parities yields more appropriate international comparison of real incomes than the Geary-Khamis approach.
Ackland, Robert   +2 more
openaire   +3 more sources

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

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

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

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