Results 1 to 10 of about 526,190 (132)

Low-Cost COTS GNSS Interference Monitoring, Detection, and Classification System

open access: yesSensors, 2023
Interference signals cause position errors and outages to global navigation satellite system (GNSS) receivers. However, to solve these problems, the interference source must be detected, classified, its purpose determined, and localized to eliminate it ...
Johannes Rossouw van der Merwe   +8 more
doaj   +1 more source

Wetland vegetation changes in response to climate change and human activities on the Tibetan Plateau during 2000–2015

open access: yesFrontiers in Ecology and Evolution, 2023
The Tibetan Plateau (TP), known as the third pole, is the highest plateau in the world. It has numerous wetlands, which are important ecological security barriers and plays an important role in mitigating global climate change. This paper employed breaks
Yuhan Chen   +11 more
doaj   +1 more source

RTK-Quality Positioning With Global Precise Point Positioning Corrections

open access: yesNavigation, 2023
Global navigation satellite system (GNSS) precise point positioning (PPP) has potential as an alternative or replacement for real-time kinematic (RTK) processing.
Nacer Naciri, Sunil Bisnath
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

The Effect of BDS-3 Time Group Delay and Differential Code Bias Corrections on Positioning

open access: yesApplied Sciences, 2020
The timing group delay parameter (TGD) or differential code bias parameter (DCB) is an important factor that affects the performance of GNSS basic services; therefore, TGD and DCB must be taken seriously.
Peipei Dai   +6 more
doaj   +1 more source

Positioning with GNSS and 5G: Analysis of Geometric Accuracy in Urban Scenarios

open access: yesSensors, 2023
GNSS positioning in urban scenarios suffers for the scarce visibility of satellites. Integration with 5G services for positioning could improve this situation. In this paper, the digital surface models (DSMs) relevant to different urban scenarios, namely
Marianna Alghisi, Ludovico Biagi
doaj   +1 more source

Positioning performance analysis on combined GPS/BDS precise point positioning

open access: yesGeodesy and Geodynamics, 2020
Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with the precise orbit and clock products from Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS), we studied the model of combined GPS/BDS precise ...
Jing Xiong, Fei Han
doaj   +1 more source

A Deep Learning Approach to Position Estimation from Channel Impulse Responses

open access: yesSensors, 2019
Radio-based locating systems allow for a robust and continuous tracking in industrial environments and are a key enabler for the digitalization of processes in many areas such as production, manufacturing, and warehouse management.
Arne Niitsoo   +4 more
doaj   +1 more source

Relative positioning control of flexible structure for precise positioning stage

open access: yesMechanical Engineering Journal, 2020
Precise positioning technologies are widely used in industrial machines such as device manufacturing equipment. Many studies have been done on feedback control systems for precise positioning stages that improve accuracy by using sensor signal feedback ...
Hironori OGAWA   +2 more
doaj   +1 more source

Mine personnel position monitoring technology

open access: yesGong-kuang zidonghua, 2023
This paper analyzes the technologies of mine ranging and positioning, such as ultrasound, laser, video, inertial navigation, pedometer, and radio.
SUN Jiping
doaj   +1 more source

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