Results 61 to 70 of about 22,841,368 (245)

Fast and Reliable Network RTK Positioning Based on Multi-Frequency Sequential Ambiguity Resolution under Significant Atmospheric Biases

open access: yesRemote Sensing
The positioning performance of the Global Navigation Satellite System (GNSS) network real-time kinematic (NRTK) depends on regional atmospheric error modeling.
Hao Liu   +5 more
doaj   +1 more source

A Police and Insurance Joint Management System Based on High Precision BDS/GPS Positioning

open access: yesSensors, 2018
Car ownership in China reached 194 million vehicles at the end of 2016. The traffic congestion index (TCI) exceeds 2.0 during rush hour in some cities. Inefficient processing for minor traffic accidents is considered to be one of the leading causes for ...
Wenwei Zuo   +4 more
doaj   +1 more source

A Real-Time Collision Avoidance System for Autonomous Surface Vessel Using Fuzzy Logic

open access: yesIEEE Access, 2020
Numerous researches have been done to develop ASV (Autonomous Surface Vessel) collision avoidance systems. Most of the systems used static methods but did not apply a knowledge base where solutions can be reused and adapted to solve a new case.
Yancai Hu   +3 more
doaj   +1 more source

An Outdoor Navigation System for Blind Pedestrians Using GPS and Tactile-Foot Feedback

open access: yes, 2018
This paper presents a novel, wearable navigation system for visually impaired and blind pedestrians that combines a global positioning system (GPS) for user outdoor localization and tactile-foot stimulation for information presentation.
R. Velázquez   +5 more
semanticscholar   +1 more source

Research on Remote GPS Common-View Precise Time Transfer Based on Different Ionosphere Disturbances

open access: yesSensors, 2020
Propagation path delays are a major error for the remote precise time transfer of common view; these path delays contain the ionosphere and troposphere impact, while the contributions of the ionosphere and the troposphere from common-view satellites to ...
Jingkui Zhang   +4 more
doaj   +1 more source

Autonomous navigation of the space debris collector [PDF]

open access: yesINCAS Bulletin, 2019
The article discusses potential use of proposed by the authors configuration of onboard system of autonomous navigation and movement control of space debris collector to operate at GSO.
Dmitriy A. KOZOREZ, Dmitriy M. KRUZHKOV
doaj   +1 more source

A Minimal Solution for Binocular Camera Relative Pose Estimation Based on the Gravity Prior

open access: yesRemote Sensing
High-precision positioning is the foundation for the functionality of various intelligent agents. In complex environments, such as urban canyons, relative pose estimation using cameras is a crucial step in high-precision positioning. To take advantage of
Dezhong Chen   +3 more
doaj   +1 more source

Pedestrian Dead Reckoning Based on Motion Mode Recognition Using a Smartphone

open access: yesSensors, 2018
This paper presents a pedestrian dead reckoning (PDR) approach based on motion mode recognition using a smartphone. The motion mode consists of pedestrian movement state and phone pose.
Boyuan Wang   +4 more
doaj   +1 more source

Enhanced Heuristic Drift Elimination with Adaptive Zero-Velocity Detection and Heading Correction Algorithms for Pedestrian Navigation

open access: yesSensors, 2020
As pedestrian dead-reckoning (PDR), based on foot-mounted inertial sensors, suffers from accumulated error in velocity and heading, an improved heuristic drift elimination (iHDE) with a zero-velocity update (ZUPT) algorithm was proposed for ...
Ruihui Zhu   +5 more
doaj   +1 more source

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