Results 11 to 20 of about 963 (157)
A PPP-RTK APPROACH TO MASS-MARKET APPLICATIONS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 PPP-RTK has been widely investigated to take the advantages of both real-time kinematic (RTK) and precise point positioning (PPP) techniques. Prior to PPP-RTK, the conventional RTK based on the use of a single base station, on the one hand, has been ...
Y. Gao, Y. Zhang, Z. Lyu
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PPP/PPP-RTK Message Authentication
Navigation, 2023 This paper analyzes candidate schemes for PPP/PPP-RTK (precise point positioning/real-time kinematic) data authentication. Asymmetric schemes are proposed based on existing standards and compatible with GNSS messages.
Ignacio Fernandez-Hernandez +3 more
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On the Problem of Double-Filtering in PPP-RTK. [PDF]
Sensors (Basel), 2022 To obtain single-receiver Global Navigation Satellite System (GNSS) parameter solutions, the PPP-RTK user-filter combines measurements with time-correlated corrections that are separately computed by the filter of an external provider. The consequence of exercising such double-filtering is that the Kalman filter’s standard assumption of having ...
Khodabandeh A, Teunissen PJG, Psychas D.
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A Novel Robust High‐Precision Ionospheric Delay Modeling for PPP‐RTK Using Crowdsourced Data
Space WeatherThe performance of PPP‐RTK is critically dependent on the quality of ionospheric corrections derived from a reference network. While the proliferation of mass‐market Global Navigation Satellite System (GNSS) devices offers a promising crowdsourcing ...
Bo Wang +6 more
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The role of fibroblast growth factors in cell and cancer metabolism. [PDF]
FEBS LettFibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Price J, Francavilla C.
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PPP-RTK considering the ionosphere uncertainty with cross-validation
Satellite Navigation, 2022 With the high-precision products of satellite orbit and clock, uncalibrated phase delay, and the atmosphere delay corrections, Precise Point Positioning (PPP) based on a Real-Time Kinematic (RTK) network is possible to rapidly achieve centimeter-level ...
Pan Li +6 more
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Performance of PPP and PPP-RTK with new-generation GNSS constellations and signals
Satellite NavigationThe expansion of Global Navigation Satellite Systems (GNSS) and Regional Navigation Satellite Systems (RNSS), along with broadcasting of additional signals, offers more options for Precise Point Positioning (PPP). Utilizing a number of constellations and
Xiaodong Ren +2 more
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Real-Time PPP-RTK Performance Analysis Using Ionospheric Corrections from Multi-Scale Network Configurations [PDF]
Sensors, 2020 Dimitrios Psychas +2 more
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Status of UnDifferenced and Uncombined GNSS Data Processing Activities in China [PDF]
Journal of Geodesy and Geoinformation Science, 2023 With the continued development of multiple Global Navigation Satellite Systems (GNSS) and the emergence of various frequencies, UnDifferenced and UnCombined (UDUC) data processing has become an increasingly attractive option.
Pengyu HOU, Delu CHE, Teng LIU, Jiuping ZHA, Yunbin YUAN, Baocheng ZHANG
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A Two-Step Regional Ionospheric Modeling Approach for PPP-RTK. [PDF]
Sensors (Basel)In the precise point positioning/real-time kinematic (PPP-RTK) technique, high-precision ionospheric delay correction information is an important prerequisite for rapid PPP convergence. The commonly used ionospheric modeling approaches in the PPP-RTKs only take the trend term of the ionospheric total electron content (TEC) variations into account. As a
Xu Z, Cai C, Pan L, Dai W, He B.
europepmc +4 more sources