Results 41 to 50 of about 312,701 (110)

Improving Geoidal Height Estimates from Global Geopotential Model Using Regression Model and GPS Data [PDF]

open access: yes, 1997
Conventionally, for most application, position of a point is often referred to the geoid as the reference surface. Thus there is an important need for the knowledge of the geoid undulation in the area where positioning tasks is performed, This ...
Abdullah, Khairul Anuar
core  

An assessment of static Precise Point Positioning using GPS only, GLONASS only, and GPS plus GLONASS [PDF]

open access: yes, 2016
The aim of this paper is to look into the achievable repeatability and accuracy from Precise Point Positioning (PPP) daily solutions when using GPS only (PPP GPS), GLONASS only (PPP GLO), and GPS plus GLONASS (PPP GPS+GLO) for static positioning. As part
Alcay   +21 more
core   +2 more sources

Assessment of Different Real Time Precise Point Positioning Correction Over the Sea Area [PDF]

open access: yes, 2019
In a global scale, the accuracy of Real Time Precise Point Positioning (RT-PPP) method in Global Navigation Satellite System (GNSS) point positioning is within cm to dm level.
., Poerbandono   +4 more
core   +3 more sources

Position Dilution of Precision: a Bayesian point of view

open access: yes, 2020
The expected position error in many cases is far from feasible to be estimated experimentally using real satellite measurements which makes the model-based position dilution of precision (PDOP) crucial in positioning and navigation applications. In the following text we derive the relationship between PDOP and position error and we explain that this ...
Koulouri, Alexandra   +2 more
openaire   +2 more sources

GNSS Precise Point Positioning Using Low-Cost GNSS Receivers [PDF]

open access: yes, 2018
There are positioning techniques available such as Real-Time Kinematic (RTK) which allow user to obtain few cm-level positioning, but require infrastructure cost, i.e., setting up local or regional networks of base stations to provide corrections ...
Gill, Maninder Singh
core  

A Novel Real-time Precise Positioning Service System: Global Precise Point Positioning With Regional Augmentation [PDF]

open access: yesJournal of Global Positioning Systems, 2012
Based on precise real time orbit and clock products from a global network, the standard Precise Point Positioning (PPP) computes user states, which requires a long initialization time in order to obtain a converged solution. Conversely, the Network Real-Time Kinematic (NRTK) positioning requires additional corrections from regional or local dense ...
Ge, M.   +5 more
openaire   +4 more sources

Analysis of the time series of station coordinates - a comparison of the network and PPP approach [PDF]

open access: yes, 2015
Based on the example of fourteen selected permanent GNSS stations of the EPN (EUREF Permanent Network) the differences of time variations of coordinates – velocities – resulting from the network and PPP (Precise Point Positioning) solution are studied.
Douša, Jan   +3 more
core   +1 more source

Network-based High Accuracy Positioning with the GPSTk [PDF]

open access: yes, 2010
This paper presents an implementation of a postprocess kinematic positioning technique similar to PPP (Precise Point Positioning) but based on a network of stations.
Hernández Pajares, Manuel   +3 more
core   +1 more source

An Improved Model For Precise Point Positioning With Modernized Global Positioning System [PDF]

open access: yes, 2022
Recent developments in GPS positioning show that a user with a standalone GPS receiver can obtain positioning accuracy comparable to that of carrier-phase-based differential positioning. Such a technique is commonly known as precise point positioning (PPP).
openaire   +2 more sources

Precise Point Positioning Inertial Navigation Integration for Kinematic Airborne Applications [PDF]

open access: yes, 2017
UAVs have the potential for autonomous airborne remote sensing applications that require rapid response to natural hazards (e.g. volcano eruptions, earthquakes).
Watson, Ryan
core   +1 more source

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