Results 31 to 40 of about 22,812,475 (283)

Novel Hybrid Algorithm of Improved CKF and GRU for GPS/INS

open access: yesIEEE Access, 2020
In order to ensure that Inertial Navigation System/Global Positioning System integrated navigation system (INS/GPS) can still provide high precision positioning results when GPS outages, a novel hybrid algorithm based on Gated Recurrent Unit (GRU) and ...
Dengao Li, Yuqi Wu, Jumin Zhao
doaj   +1 more source

Comparing Kalman Filter and Dynamic Adaptive Neuro Fuzzy for Integrating of INS/GPS Systems [PDF]

open access: yesEngineering and Technology Journal, 2016
Global Positioning System (GPS) and Inertial Navigation System (INS) technologies have been widely used in a variety of positioning and navigation applications. Both Systems have their unique features and shortcomings.
Sameir A. Aziez, Huda Naji Abdul-Rihda
doaj   +1 more source

Performance of global navigation satellite systems (GNSS) in absence of GPS observations

open access: yesAin Shams Engineering Journal, 2022
Over the last decades, a wide range of applications that require positioning relied on the global positioning system (GPS) established by the US Department of Defence (DOD).
Islam Ashour   +3 more
doaj   +1 more source

Testing the Positioning Accuracy of GNSS Solutions during the Tramway Track Mobile Satellite Measurements in Diverse Urban Signal Reception Conditions

open access: yesEnergies, 2020
Mobile Global Navigation Satellite System (GNSS) measurements carried out on the railway consist of using satellite navigation systems to determine the track geometry of a moving railway vehicle on a given route.
Mariusz Specht   +12 more
doaj   +1 more source

A particle filtering approach for joint detection/estimation of multipath effects on GPS measurements [PDF]

open access: yes, 2007
Multipath propagation causes major impairments to Global Positioning System (GPS) based navigation. Multipath results in biased GPS measurements, hence inaccurate position estimates.
Giremus, Audrey   +2 more
core   +1 more source

The Impact of Estimating High-Resolution Tropospheric Gradients on Multi-GNSS Precise Positioning

open access: yesSensors, 2017
Benefits from the modernized US Global Positioning System (GPS), the revitalized Russian GLObal NAvigation Satellite System (GLONASS), and the newly-developed Chinese BeiDou Navigation Satellite System (BDS) and European Galileo, multi-constellation ...
Feng Zhou   +6 more
doaj   +1 more source

BDS/GPS/UWB Adaptively Robust EKF Tightly Coupled Navigation Model Considering Pedestrian Motion Characteristics

open access: yesRemote Sensing, 2022
In the indoor and outdoor transition area, due to its poor availability in a complex positioning environment, the BDS/GPS SPP (single-point positioning by combining BeiDou Navigation Satellite System (BDS) and Global Positioning System (GPS)) is unable ...
Jian Zhang   +3 more
doaj   +1 more source

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
The Quasi-Zenith Satellite System (QZSS), a dedicated regional Japanese satellite system currently under development, was designed to complement the performance of the Global Positioning System (GPS).
Byung-Kyu Choi   +2 more
doaj   +1 more source

A New Indoor Positioning System Architecture Using GPS Signals

open access: yesSensors, 2015
The pseudolite system is a good alternative for indoor positioning systems due to its large coverage area and accurate positioning solution. However, for common Global Positioning System (GPS) receivers, the pseudolite system requires some modifications ...
Rui Xu, Wu Chen, Ying Xu, Shengyue Ji
doaj   +1 more source

Maritime DGPS System Positioning Accuracy as a Function of the HDOP in the Context of Hydrographic Survey Performance

open access: yesRemote Sensing, 2022
The Differential Global Positioning System (DGPS) is a marine navigation system operating at frequencies of 283.5–325 kHz, which is now the primary method for locating vessels in coastal shipping, as well as hydrography and mapping systems worldwide. Its
Cezary Specht
doaj   +1 more source

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