Results 51 to 60 of about 301,173 (181)
Wireless sensor indoor positioning based on an improved particle filter algorithm
International Journal of Distributed Sensor Networks, 2020 Positioning by wireless sensor network is one of its main functions and has been widely used in many fields. However, when signal propagation is hindered, serious errors, non-line-of-sight errors, occur.
Pan Feng +4 more
doaj +1 more source
New Parametrizations of Non-Gaussian Line-of-sight Velocity Distribution [PDF]
, 1995 A five-parameter fitting formula for the line-of-sight stellar velocity distributions of steady state systems is proposed. It can faithfully reproduce velocity distributions of theoretical models ranging from nearly Gaussian profiles to strongly skewed ...
Prada, Francisco, Zhao, HongSheng
core +2 more sources
, 2013 The short gravitational wave signal from the merger of compact binaries encodes a surprising amount of information about the strong-field dynamics of merger into frequencies accessible to ground-based interferometers.
Healy, J. +3 more
core +1 more source
Wideband UHF and SHF long-range channel characterization
EURASIP Journal on Wireless Communications and Networking, 2019 This paper presents an outdoor long-range (from 315 m up to 5.3 km) fixed channel campaign for both ultra high frequency and super high frequency bands with co-polarized horizontal and vertical antenna configurations.
Edward Kassem +6 more
doaj +1 more source
A Tractable Product Channel Model for Line-of-Sight Scenarios [PDF]
, 2019 We present a general and tractable fading model for line-of-sight (LOS) scenarios, which is based on the product of two independent and non-identically distributed $\kappa$-$\mu$ shadowed random variables.
Fernandez-Plazaola, Unai +5 more
core +2 more sources
A line-of-sight optimised MIMO architecture for outdoor environments [PDF]
, 2006 This document is made available in accordance with publisher policies. Please cite only the published version using the reference above.
Nix, AR, Sarris, I
core +3 more sources
Self-stabilized theodolite for manual tracking using photosensitive stabilizing means Patent [PDF]
, 1966 Self-stabilized vernier theodolite for determining angular orientation of line of sight between target and inertial reference system on manned space ...
Smith, G. A.
core +1 more source
The first measurement of temperature standard deviation along the line-of-sight in galaxy clusters
, 2012 Clusters of galaxies are mainly formed by merging of smaller structures, according to the standard cosmological scenario. If the mass of a substructure is >10% of that of a galaxy cluster, the temperature distribution of the intracluster medium (ICM) in ...
Akahori +27 more
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IEEE AccessNon-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni +8 more
doaj +1 more source
Error analysis of line-of-sight measurement for video satellite
Advances in Mechanical Engineering, 2017 Compared to ground-based observation, using video satellite to track space objects and determine the orbit has a unique advantage, which can provide strong support for space mission guarantee, object identification, important spacecraft collision warning,
Xueyang Zhang, Junhua Xiang, Yulin Zhang
doaj +1 more source