Results 11 to 20 of about 559,360 (118)

Overview of legal traceability of GPS positioning in Australia

open access: yesSatellite Navigation, 2020
Global Positioning System (GPS) position verification and legal traceability in Australia supports industry, trade, science and innovation and is trusted and recognized domestically and internationally.
Guorong Hu, John Dawson
doaj   +1 more source

Evaluation of Low-Complexity Adaptive Full Direct-State Kalman Filter for Robust GNSS Tracking

open access: yesSensors, 2023
This paper evaluates the implementation of a low-complexity adaptive full direct-state Kalman filter (DSKF) for robust tracking of global navigation satellite system (GNSS) signals.
Iñigo Cortés   +4 more
doaj   +1 more source

Overcoming the Challenges of BeiDou Receiver Implementation

open access: yesSensors, 2014
Global Navigation Satellite System (GNSS)-based positioning is experiencing rapid changes. The existing GPS and the GLONASS systems are being modernized to better serve the current challenging applications under harsh signal conditions.
Mohammad Zahidul H. Bhuiyan   +4 more
doaj   +1 more source

An Improved Divergence-Free Hatch Filter Algorithm Toward Sub-Meter Train Positioning With GNSS Single- Frequency Observations Only

open access: yesIEEE Access, 2020
Train positioning is the core function in the application of Global Navigation Satellite Systems (GNSS) in Railway Transportation. However, the use of the differential GPS (DGPS) along the Qinghai-Tibet Railway is expensive and difficult to maintain ...
Rui Tian, Xurong Dong
doaj   +1 more source

RNN-Aided Human Velocity Estimation from a Single IMU

open access: yesSensors, 2020
Pedestrian Dead Reckoning (PDR) uses inertial measurement units (IMUs) and combines velocity and orientation estimates to determine a position. The estimation of the velocity is still challenging, as the integration of noisy acceleration and angular ...
Tobias Feigl   +5 more
doaj   +1 more source

Performance Evaluation of Adaptive Tracking Techniques with Direct-State Kalman Filter

open access: yesSensors, 2022
This paper evaluates the performance of robust adaptive tracking techniques with the direct-state Kalman filter (DSKF) used in modern digital global navigation satellite system (GNSS) receivers.
Iñigo Cortés   +4 more
doaj   +1 more source

L'evoluzione delle Stazioni Totali: quarant'anni di innovazione Topcon

open access: yesGEOmedia, 2018
A 40-year history, from the introduction of the first total station model, so named because it introduced an absolute innovation compared to the combination theodolite-EDM, up to the last generations of robotic instrumentation for which the involvement ...
Massimiliano Toppi, Sauro Passarelli
doaj   +3 more sources

Indoor Localization With Robust Global Channel Charting: A Time-Distance-Based Approach

open access: yesIEEE Transactions on Machine Learning in Communications and Networking, 2023
Fingerprinting (FP) significantly improves the indoor localization performance in non-line-of-sight-dominated areas. However, its deployment and maintenance is cost-intensive as it needs ground-truth reference systems for both the initial training and ...
Maximilian Stahlke   +4 more
doaj   +1 more source

Optimisation of Lilla Edet Landslide GPS Monitoring Network

open access: yesJournal of Geodetic Science, 2015
Since the year 2000, some periodic investigations have been performed in the Lilla Edet region to monitor and possibly determine the landslide of the area with GPS measurements.
Alizadeh-Khameneh M. A.   +2 more
doaj   +1 more source

Ubiquitous UWB Ranging Error Mitigation With Application to Infrastructure-Free Cooperative Positioning

open access: yesIEEE Journal of Indoor and Seamless Positioning and Navigation
Ultra wideband (UWB) signals are a promising choice for indoor positioning applications, since they are able to penetrate walls to a certain extent. Nevertheless, signal reflections and non-line-of-sight propagation cause bias in the measured range. This
Maija Makela   +6 more
doaj   +1 more source

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