Results 31 to 40 of about 2,261,545 (240)

Assessing the Performance of Multi-GNSS PPP-RTK in the Local Area

open access: yesRemote Sensing, 2020
The benefits of an increased number of global navigation satellite systems (GNSS) in space have been confirmed for the robustness and convergence time of standard precise point positioning (PPP) solutions, as well as improved accuracy when (most of) the ...
Hongyang Ma   +4 more
doaj   +1 more source

High-Accuracy Real-Time Kinematic Positioning with Multiple Rover Receivers Sharing Common Clock

open access: yesRemote Sensing, 2021
Since the traditional real-time kinematic positioning method is limited by the reduced satellite visibility from the deprived navigational environments, we, therefore, propose an improved RTK method with multiple rover receivers sharing a common clock ...
Lin Zhao   +4 more
doaj   +1 more source

Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS) based realtime satellite relative navigation by applying laser baseline measurement data.
Hyungjik Oh   +4 more
doaj   +1 more source

The Future of Single-Frequency Integer Ambiguity Resolution

open access: yes, 2011
The coming decade will bring a proliferation of Global Navigation Satellite Systems (GNSSs) that are likely to enable a much wider range of demanding applications compared to the current GPS-only situation. One such important area of application is single-frequency real-time kinematic (RTK) positioning.
Verhagen, S, Teunissen, Peter, Odijk, D
openaire   +4 more sources

Influence of the inhomogeneous troposphere on GNSS positioning and integer ambiguity resolution

open access: yesAdvances in Space Research, 2021
The tropospheric delay is one of many error sources that affect the Global Navigation Satellite System (GNSS) positioning solutions. The widely used troposphere models assume a homogeneous atmosphere so that only the zenith delay needs to be determined and is mapped through an elevation-dependent mapping function.
Hongyang Ma   +5 more
openaire   +3 more sources

GNSS Precise Relative Positioning Using A Priori Relative Position in a GNSS Harsh Environment

open access: yesSensors, 2021
To enable Global Navigation Satellite System (GNSS)-based precise relative positioning, real-time kinematic (RTK) systems have been widely used.
Euiho Kim
doaj   +1 more source

Single-frequency integer ambiguity resolution enabled GPS precise point positioning

open access: yes, 2012
High-precision (centimeter-level) real-time kinematic precise point positioning (PPP-RTK) becomes feasible when using precise corrections, as received from a regional Continuously Operating Reference Station network.
Teunissen, Peter   +2 more
core   +2 more sources

Reliability control of GNSS carrier-phase integer ambiguity resolution [PDF]

open access: yes, 2015
This research investigates how to obtain accurate and reliable positioning results with global navigation satellite systems (GNSS). The work provides a theoretical framework for reliability control in GNSS carrier phase ambiguity resolution, which is the
Wang, Lei
core  

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Precision-Aided Partial Ambiguity Resolution Scheme for Instantaneous RTK Positioning

open access: yesRemote Sensing, 2021
The use of carrier phase data is the main driver for high-precision Global Navigation Satellite Systems (GNSS) positioning solutions, such as Real-Time Kinematic (RTK). However, carrier phase observations are ambiguous by an unknown number of cycles, and
Juan Manuel Castro-Arvizu   +5 more
doaj   +1 more source

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