Results 81 to 90 of about 1,523 (198)
Robust Kalman Filter Aided GEO/IGSO/GPS Raw-PPP/INS Tight Integration
Sensors, 2019 Reliable and continuous navigation solutions are essential for high-accuracy location-based services. Currently, the real-time kinematic (RTK) based Global Positioning System (GPS) is widely utilized to satisfy such requirements.
Zhouzheng Gao +5 more
doaj +1 more source
REAL TIME PPP APPLIED TO AIRPLANE FLIGTHT TESTS [PDF]
, 2019 The availability in real time of GNSS satellites orbits, clock corrections and code and phase biases provided the possibility of application of Real Time Precise Point Positioning (RTPPP).
de Souza, Mauricio Cardoso +6 more
core +4 more sources
Space Weather, Volume 23, Issue 8, August 2025.Abstract We present observations of plasma structuring from three meters up to hundreds of kilometers at auroral latitudes during the extreme geomagnetic storm of May 2024 using co‐ordinated observations from ICEBEAR and Global Navigation Satellite Systems (GNSS) receivers. Intense irregularities on all spatial scales co‐existed for about 4 hr between ∼
Mahith Madhanakumar +8 more
wiley +1 more source
Undifferenced and Uncombined GNSS Time Transfer and its Space Applications [PDF]
, 2023 This thesis presents a framework for developing a state-of-the-art undifferenced and uncombined (UDUC) time transfer technique for space applications.
Mi, Xiaolong
core
Fast precise point positioning: a system to provide corrections for single and multi-frequency navigation [PDF]
, 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
Improving PPP-RTK with a Self-validation Grid-Based Ionospheric Model
, 2023 The rapid convergence of PPP-RTK depends on the ionospheric correction including the accuracy and prior information. However, the traditional grid-based ionospheric model often uses fixed ionospheric prior information without taking into account the spatiotemporal diversity of the ionosphere, thus weakening the performance of PPP-RTK and limiting its ...
Han, J., Li, X., Li, X., Wu, Z., Lei, T.
openaire +2 more sources
An Improved Long-Period Precise Time-Relative Positioning Method Based on RTS Data
Sensors, 2020 The high precision positioning can be easily achieved by using real-time kinematic (RTK) and precise point positioning (PPP) or their augmented techniques, such as network RTK (NRTK) and PPP-RTK, even if they also have their own shortfalls.
Yangwei Lu +5 more
doaj +1 more source
3D-mapping-aided PPP-RTK for deep urban canyons
, 2023 GNSS precise positioning is challenged in difficult urban environments. The performance of precise positioning, especially integer ambiguity resolution, will be seriously deteriorated by the receptions of complex multipath or NLOS (non-light-of-sight) signals.
Geng, J., Xin, S., Hsu, L.
openaire +2 more sources
Design of a Low-cost GPS/magnetometer System for Land-based Navigation: Integration and Autocalibration Algorithms [PDF]
, 2011 The land-based navigation, paying attention to precision farming, is the research topic: the final purpose is the design and development of a guidance-aided system focusing on a low-cost GPS receiver able to provide a ...
Biagi, Ludovico +2 more
core
Development and Realisation of a Real-Time High Precision Positioning SSR-RTK Service for the North Sea Exclusive Economic Zone [PDF]
, 2022 In a two-year research and development project, the prototype of a GNSS (Global Navigation Satellite System) based real-time service using a SSR-RTK (State Space Representation-Real Time Kinematic) approach was developed for the German exclusive economic
Jahn, Cord-Hinrich +6 more
core +1 more source