Results 31 to 40 of about 312,701 (110)

The Impact of Eclipsing GNSS Satellites on the Precise Point Positioning [PDF]

open access: yesRemote Sensing, 2018
When satellites enter into the noon maneuver or the shadow crossing regimes, the actual attitudes will depart from their nominal values. If improper attitude models are used, the induced-errors due to the wind-up effect and satellite antenna PCO (Phase Center Offset) will deteriorate the positioning accuracy. Because different generations of satellites
Xinyun Cao   +4 more
openaire   +3 more sources

Fast precise point positioning: a system to provide corrections for single and multi-frequency navigation [PDF]

open access: yes, 2016
Fast Precise Point Positioning (Fast-PPP) provides Global Navigation Satellite System corrections in real-time. Satellite orbits and clock corrections are shown to be accurate to a few centimeters and a few tenths of a nanosecond which, together with ...
Bertran Albertí, Eduardo   +4 more
core   +2 more sources

Optimization Model for Planning Precision Grasps with Multi-Fingered Hands

open access: yes, 2019
Precision grasps with multi-fingered hands are important for precise placement and in-hand manipulation tasks. Searching precision grasps on the object represented by point cloud, is challenging due to the complex object shape, high-dimensionality ...
Fan, Yongxiang   +2 more
core   +1 more source

Static positioning technique for ground control point determination for precise mapping using unmanned aerial system [PDF]

open access: yes, 2014
Mapping can be intense and laborious with the current method in term of the work environment, manpower, cost, time, and obviously, the equipment used for the work. Traditional mapping technique uses photogrammetry, total station and GPS.
Ahmad, Anuar   +2 more
core   +1 more source

PERFORMANCE ANALYSIS OF WEB-BASED RELATIVE AND PRECISE POINT POSITIONING TECHNIQUES WITH DIFFERENT SATELLITE VISIBILITY CONDITIONS [PDF]

open access: yes, 2020
The Global Navigation Satellite System (GNSS) is used for precise positioning applications, such as surveying and geodesy. The aim of the present work is to evaluate the effectiveness of web-based relative positioning (RP) and precise point positioning ...
Albayrak, Müge   +2 more
core   +3 more sources

Accuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effects [PDF]

open access: yes, 2018
GPS and GLONASS are currently the Global Navigation Satellite Systems (GNSS) with full 16 operational capacity. The integration of GPS, GLONASS and future GNSS constellations can 17 provide better accuracy and more reliability in geodetic positioning, in
Aquino   +29 more
core   +3 more sources

RTK-Quality Positioning With Global Precise Point Positioning Corrections

open access: yesNAVIGATION: Journal of the Institute of Navigation, 2023
Global navigation satellite system (GNSS) precise point positioning (PPP) has potential as an alternative or replacement for real-time kinematic (RTK) processing. In this work, we reached for RTK levels of performance without the need for local information through PPP (i.e., centimeter-level positioning that was reached near-instantaneously). This work
Nacer Naciri, Sunil Bisnath
openaire   +2 more sources

GNSS precise point positioning :the enhancement with GLONASS [PDF]

open access: yes, 2013
PhD ThesisPrecise Point Positioning (PPP) provides GNSS navigation using a stand-alone receiver with no base station. As a technique PPP suffers from long convergence times and quality degradation during periods of poo satellite visibility or geometry ...
Martin, Ian
core  

Testing of Precise Point Positioning Method [PDF]

open access: yes, 2020
Tato diplomová práce se zabývá testováním metody Precise Point Positioning (PPP) v různých variantách. V práci jsou popsány teoretické základy metody PPP a nejdůležitější systematické chyby, které ovlivňují její přesnost.
Nosek, Jakub
core  

Network based real-time precise point positioning [PDF]

open access: yesAdvances in Space Research, 2010
Network based real-time precise point positioning system includes two stages, i.e. real-time estimation of satellite clocks based on a reference network and real-time precise point positioning thereafter. In this paper, a satellite- and epoch-differenced approach, adopted from what is introduced by Han et al.
Zhiqiang Liu   +7 more
openaire   +5 more sources

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