Results 61 to 70 of about 18,207 (144)

Navigation by Dead Reckoning and Local Cues [PDF]

open access: yes, 2017
According to comprehensive theories of navigation, animals navigate by using two complementary strategies: (1) dead reckoning informs the subject in a continuous manner on its actual location with respect to an Earthbound or absolute coordinate system ...
Etienne, A. S., Séguinot, V.
core  

Quantitative Assessment of Upper Limb Motion in Neurorehabilitation Utilizing Inertial Sensors [PDF]

open access: yes, 2015
Two inertial sensor systems were developed for 3-D tracking of upper limb movement. One utilizes four sensors and a kinematic model to track the positions of all four upper limb segments/joints and the other uses one sensor and a dead reckoning algorithm
Bai, Lu   +5 more
core   +2 more sources

On higher ground: how well can dynamic body acceleration determine speed in variable terrain? [PDF]

open access: yesPLoS ONE, 2012
INTRODUCTION: Animal travel speed is an ecologically significant parameter, with implications for the study of energetics and animal behaviour. It is also necessary for the calculation of animal paths by dead-reckoning.
Owen R Bidder   +2 more
doaj   +1 more source

Cooperative localization by dual foot-mounted inertial sensors and inter-agent ranging

open access: yes, 2013
The implementation challenges of cooperative localization by dual foot-mounted inertial sensors and inter-agent ranging are discussed and work on the subject is reviewed. System architecture and sensor fusion are identified as key challenges. A partially
Händel, Peter   +3 more
core   +1 more source

Using Surface-Motions for Locomotion of Microscopic Robots in Viscous Fluids [PDF]

open access: yes, 2014
Microscopic robots could perform tasks with high spatial precision, such as acting in biological tissues on the scale of individual cells, provided they can reach precise locations.
Hogg, Tad
core   +1 more source

Systems for dead-reckoning navigation and for simulation of instrumental error - Concepts [PDF]

open access: yes, 1971
Navigational system for manned lunar vehicles is intended for travel totaling 30 km within 5 km of home base, total distance traveled must be indicated with 2 percent accuracy.
Green, W. L.
core   +1 more source

Evaluating indoor positioning systems in a shopping mall : the lessons learned from the IPIN 2018 competition [PDF]

open access: yes, 2019
The Indoor Positioning and Indoor Navigation (IPIN) conference holds an annual competition in which indoor localization systems from different research groups worldwide are evaluated empirically.
Ali, Muhammad Usman   +60 more
core   +2 more sources

A Hybrid Method to Improve the BLE-Based Indoor Positioning in a Dense Bluetooth Environment

open access: yesSensors, 2019
Indoor positioning using Bluetooth Low Energy (BLE) beacons has attracted considerable attention after the release of the BLE protocol. A number of efforts have been exerted to improve the performance of BLE-based indoor positioning. However, few studies
Ke Huang, Ke He, Xuecheng Du
doaj   +1 more source

GNSS Trajectory Anomaly Detection Using Similarity Comparison Methods for Pedestrian Navigation

open access: yesSensors, 2018
The urban setting is a challenging environment for GNSS receivers. Multipath and other anomalies typically increase the positioning error of the receiver. Moreover, the error estimate of the position is often unreliable.
Pekka Peltola   +4 more
doaj   +1 more source

Observations of River Topography and Flow Around Bridges [PDF]

open access: yes, 2009
This investigation was motivated by the amount of river, estuarine, and coastal infrastructure that is susceptible to extreme wave and flooding events. The high velocities and resulting shear stresses associated with high flow velocities are capable of ...
Lippmann, Thomas C.
core   +1 more source

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