Results 11 to 20 of about 1,482 (190)

Review and principles of PPP-RTK methods [PDF]

Journal of Geodesy, 2015
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.
A Lannes, A Lannes, A. Khodabandeh, B Hofmann-Wellenhof, B Zhang, CR Rao, D Laurichesse, D Odijk, D Odijk, J Geng, J Geng, J Geng, J Geng, J Kouba, M Ge, M Hernandez-Pajares, P. J. G. Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, PJG Teunissen, S Bisnath, S Loyer, W Bertiger, X Li, X Zhang   +33 more
core   +3 more sources

PPP-RTK considering the ionosphere uncertainty with cross-validation [PDF]

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, Bobin Cui, Jiahuan Hu, Xuexi Liu, Xiaohong Zhang, Maorong Ge, Harald Schuh   +6 more
doaj   +7 more sources

PPP-RTK and inter-system biases: the ISB look-up table as a means to support multi-system PPP-RTK [PDF]

Journal of Geodesy, 2016
PPP-RTK has the potential of benefiting enormously from the integration of multiple GNSS/RNSS systems. However, since unaccounted inter-system biases (ISBs) have a direct impact on the integer ambiguity resolution performance, the PPP-RTK network and ...
Khodabandeh, Amir, Teunissen, Peter
core   +3 more sources

Satellite-clock modeling in single-frequency PPP-RTK processing [PDF]

Journal of Surveying Engineering, 2018
The real-time kinematic precise point positioning (PPP-RTK) technique enables integer ambiguity resolution by providing singlereceiver users with information on the satellite phase biases next to the standard PPP corrections.
Khodabandeh, Amir, Nadarajah, Nandakumaran, Teunissen, Peter, Wang, K.   +3 more
core   +4 more sources

A Novel Robust High‐Precision Ionospheric Delay Modeling for PPP‐RTK Using Crowdsourced Data

Space Weather
The 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, Jiaxi Zhu, Zhilu Wu, Dejin Zhang, Zhao Li, Minsi Ao, Shengfeng Gu   +6 more
doaj   +2 more sources

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.
europepmc   +6 more sources

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

The role of fibroblast growth factors in cell and cancer metabolism. [PDF]

FEBS Lett
Fibroblast 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.
europepmc   +2 more sources

Integrity monitoring scheme for undifferenced and uncombined multi-frequency multi-constellation PPP-RTK [PDF]

, 2023
The precise point positioning (PPP)-based real-time-kinematic (RTK) method attracts increasing attention from both academia and industry because of its potential for high accuracy positioning with a shorter convergence time compared to the traditional ...
El-Mowafy, Ahmed, Rizos, C., Wang, J., Zhang, W.   +3 more
core   +1 more source

Review of PPP–RTK: achievements, challenges, and opportunities

Satellite 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, Jiaxin Huang, Xin Li, Zhiheng Shen, Junjie Han, Linyang Li, Bo Wang   +6 more
doaj   +1 more source