LINE-OF-SIGHT
Localization and dynamic link detection for geographic routing in non line of sight (NLOS) environments
... Although the IEEE 802.15.4a provides the location solution for the geographic routing, it still has some dif- ficulties in the indoor environments such as a company and a building hall. In the IEEE 802.15.4a, a ranging ...
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Non Line Of Sight Environment based Localization in Wireless Sensor Networks
... Node localization is the process through which each of the sensor nodes determines its own position by itself. Gang Wang [9] WLS approach is used for RSS-based localization in sensor networks. The WLS solution is used as ...
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The merger in abell 576: A line of sight bullet cluster?
... We also found a strong chemical gradient in the intr- acluster gas of this cluster. The distribution of iron and silicon abundances is asymmetric in such a way as to pro- duce a clear separation of the Si/Fe ratio at the ...
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Link Budget Design for RF Line of Sight via Theoretical Propagation Prediction
... The best way of Radio Transmission which takes place under situations whe- reby a clear line of sight should exist between receiver and transmitter [9] [10]. This condition confirms the strongest ...
7
The effects of line of sight integration on multistrand coronal loop oscillations
... Observations have shown that transverse oscillations are present in a multitude of coronal structures. It is generally assumed that these oscillations are driven by (sub)surface footpoint motions. Using fully ...
6
A Path Loss Model for Non Line of Sight Ultraviolet Multiple Scattering Channels
... In free space optical communication, the deep ultraviolet (UV) spectrum with wavelength 200 ∼ 280 nm is regarded as an appealing choice to overcome solar background radiation and relax pointing and tracking [3]. High ...
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A young solar twin in the Rosette cluster NGC 2244 line of sight
... the sight line towards a distinctive nebular feature projected on to the cluster ...this line of sight shows a barycentric radial velocity of ...
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An Adaptive Fuzzy Logic Controller Trained by Particle Swarm Optimization for Line of Sight Stabilization
... This paper presents the results of a Mamdani type fuzzy logic based controller trained using PSO for a real time defense systems. The proposed fuzzy logic based controller eliminates the hit and trial procedure for ...
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Thermal non-line-of-sight imaging from specular and diffuse reflections
... Measuring objects that are hidden from the view of a cam- era is an important problem in many research fields such as robotic vision, autonomous driving, medical imaging, and remote sensing. ...
6
Robust Estimator for Non-Line-of-Sight Error Mitigation in Indoor Localization
... Indoor localization systems are undoubtedly of interest in many application fields. Like outdoor systems, they suffer from non- line-of-sight (NLOS) errors which hinder their robustness and accuracy. Though ...
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Cosmic happenstance:24 μm selected, multicomponent Herschel sources are line of sight projections
... The vast majority of existing observational works examining the multicomponent nature of bright FIR/sub-mm sources do not have redshift measurements (e.g. Hodge et al. 2013a; Karim et al. 2013; Koprowski et al. 2014; ...
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The composition and distribution of dust along the line of sight toward the Galactic Center
... along sight lines toward the GC Quintuplet sources and several dusty late-type WC Wolf-Rayet stars and has been attrib- uted to the aromatic CwC stretch in polycyclic aromatic hydrocarbon molecules (PAH) in the ...
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Guidance Law Based on Line-of-Sight Rate Information Considering Uncertain Modeled Dynamics
... Proportional navigation (PN) is a widely-used guidance law for missile- target engagement. The goal of the missile intercept problem is to reduce the closest distance between the missile and target by diminishing the ...
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Development of Radio Wave Propagation Model in Indoor Non-Line-of-Sight (NLOS) Scenario
... The free space model is well known model for radio wave propagation between antennas especially in Line-of- Sight (LOS) environment. But those model can be used not only LOS environment but also NLOS ...
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Optimal Design of Uniform Rectangular Antenna Arrays for Strong Line of Sight MIMO Channels
... Based on the new general geometrical model introduced for the uniform rectangular array (URA), which also incorpo- rates the uniform linear array (ULA), we have investigated the optimal design for ...
10
Extended Kalman Filter Channel Estimation for Line of Sight Detection in WCDMA Mobile Positioning
... For the public interest, mobile phone positioning in a cellu- lar network with reliable and rather accurate position infor- mation has become unavoidable after the Federal Commu- nications Commission mandate, FCC-E911 ...
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Smart Antennas for Communications in Line of Sight
... conditions, line-of-sight communication requires relays (airborne platforms, such as the LAMPS helicopter) located at higher altitudes to achieve these required extended ranges; however, during tactical ...
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Line of sight effects on observability of kink and sausage modes in coronal structures with imaging telescopes
... In last few years, significant progress in the observational study of MHD wave activity of the solar corona has been achieved with SOHO/EIT and TRACE EUV imaging tele- scopes. Flare-generated decaying oscillations of ...
7
Mathematical Model for Equivalent Fresnel Zone Line of Sight Percentage Clearance for Terrestrial Point-to-Point Line-of-Sight Communication Link
... Ensuring clear Line Of Sight (LOS) is essential for effective communication in microwave links [1-3]. This is because, microwave signals are known to travel in a straight line. In reality, microwave ...
5
On the Geolocation Bounds for Round-Trip Time-of-Arrival and All Non-Line-of-Sight Channels
... crease in the observed multipath delay spread (in samples), making the detection of the “first arrival” signal more diffi- cult in practice. Next, urban/indoor environments also ex- hibit a ...
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