Showing 1-25 of 66,818 resultsfor "Index Terms":Function Of Angle
"Index Terms":Function Of Angle
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Power spectral density of the signal received in a 3-D mobile radio environment
1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, PACRIM. 10 Years Networking the Pacific Rim, 1987-1997
Year: 1997 | Conference Paper |
Cited by: Papers (2)
The power spectral density (PSD) of the signal received in a mobile radio environment is tightly related to the distribution of the arriving angles of the waves. One of the most widely accepted model, Clarke's (1961) scattering model, is a two dimensional model because of the assumption of horizontal travel of plane waves. By introducing a non-zero elevation angle (EA) of the arriving wave, the th...Show More
A 3-D fading channel model with asymmetrical PDF of elevation angle
1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363)
Year: 1999 | Conference Paper |
Power spectral density (PSD) of the signal received in a mobile radio environment is tightly related to the distribution of the arriving angles of the waves. One of the most widely accepted model, Clarke's scattering model, is a two dimensional (2-D) model because of the assumption of horizontal travel of plane waves. By introducing a non-zero elevation angle (EA) of the arriving wave, the 3-D mod...Show More
Adaptation of the Geometry-based reception angle models to different propagation scenarios
2016 10th International Conference on Signal Processing and Communication Systems (ICSPCS)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
A significant difficulty in modeling the radio channel is related to adjustment the signal reception angle models to different environmental conditions. In this study, we show the solution to this issue on the example of the uniform elliptical with receiver outside model (UERO). The measurement data taken from open literature, delay and angle spread are the basis for the model adaptation. The rela...Show More
Hybrid Variation-Aware Network for Angle-Closure Assessment in AS-OCT
Jinkui Hao;Fei Li;Huaying Hao;Huazhu Fu;Yanwu Xu;Risa Higashita;Xiulan Zhang;Jiang Liu;Yitian Zhao
Automatic angle-closure assessment in Anterior Segment OCT (AS-OCT) images is an important task for the screening and diagnosis of glaucoma, and the most recent computer-aided models focus on a binary classification of anterior chamber angles (ACA) in AS-OCT, i.e., open-angle and angle-closure. In order to assist clinicians who seek better to understand the development of the spectrum of glaucoma ...Show More
An algorithm for computing the value of arbitrary angle trigonometric function
Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering (TMEE)
Year: 2011 | Conference Paper |
Cited by: Papers (1)
Computation of the trigonometric values is an important operation in modern engineering technology. At present, most algorithms can only find out a small range of angles trigonometric values. In this paper, multiple angle algorithm which is able to solve the values of trigonometric functions of arbitrary angle is improved on the basis of theoretical analysis and experiment, and get the optimized a...Show More
ODF reconstruction in q-ball imaging with solid angle consideration
2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro
Year: 2009 | Conference Paper |
Cited by: Papers (33)
Q-ball imaging (QBI) is a high angular resolution diffusion imaging (HARDI) technique which has been proven very successful in resolving multiple intravoxel fiber orientations in MR images. The standard computation of the orientation distribution function (ODF, the probability of diffusion in a given direction) from q-ball uses linear radial projection, neglecting the change in the volume element ...Show More
Improved Particle Swarm Optimization Algorithm to Optimize Millimeter Wave Channel Modeling of RBF Neural Network
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)
Year: 2021 | Conference Paper |
This paper studies the radial basis function (RBF) neural network optimized by the improved particle swarm optimization (PSO). This neural network is used for channel modeling in complex office environments and compared with the channel modeling results of the basic RBFNN. Predicted and analyzed the path loss, delay spread and power angle distribution of the wireless channel in a 60 GHz indoor off...Show More
Hybrid parallel neuro-controller for multirotor unmanned aerial vehicle
2016 8th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
Year: 2016 | Conference Paper |
Cited by: Papers (8)
This paper provides a new method of building a flight control system for multirotor unmanned aerial vehicle based on hybrid parallel neuro-controller that uses radial basis function artificial neural network. Activation functions of hidden layer neurons are optimized in a way that allows for online training. We show that proposed hybrid neuro-controller is more effective than traditional manually ...Show More
Optical transfer function (OTF) of a Rotman lens antenna for imaging applications
This paper presents a new approach to analyzing a Rotman lens for imaging applications. The optical transfer function (OTF) is used to analyze the imaging capability of a Rotman lens. The variations in optical transfer function and the image pattern were calculated with variations in the design parameters due to beam-port spacing, antenna spacing, array size, and so on. As a result, it was found t...Show More
Interpolation of head-related transfer functions by spatial linear prediction
2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Year: 2009 | Conference Paper |
Cited by: Papers (2)
Head-related transfer functions (HRTFs) are essential for creating a virtual sound source when sound waves are transmitted through headphones. The measurement of HRTFs is a complicated and time-consuming task. Therefore, the interpolation of HRTFs is crucial for virtual auditory display systems in which both listeners and sound objects are likely to move in a virtual auditory space. In this study,...Show More
This guide is applicable to the measurement of Frequency Response Analysis (FRA) of oil immersed power transformers. It is intended to provide the user with the requirements and specifications for instrumentation, procedures for performing the tests, techniques for analyzing the data, and recommendations for long-term storage of the data and results.Show More
A Kernel Spectral Angle Mapper algorithm for remote sensing image classification
2013 6th International Congress on Image and Signal Processing (CISP)
Year: 2013 | Conference Paper |
Cited by: Papers (32)
A Kernel Spectral Angle Mapper (KSAM) algorithm is proposed to deal better with the nonlinear classification problem of the remote sensing image. The so-called KSAM algorithm is achieved by introducing the kernel method into the standard Spectral Angle Mapper (SAM) algorithm. Experimental results indicate that the classification accuracy of the KSAM algorithm is superior to one of the SAM algorith...Show More
Modeling and Simulation of A2G Channel Based on UAV Array
2020 IEEE 6th International Conference on Computer and Communications (ICCC)
Year: 2020 | Conference Paper |
Cited by: Papers (6)
Based on the geometry of UAV(Unmanned Aircraft Vehicle)array, a three dimensional (3-D) geometric channel model is proposed for air-to-ground(A2G) communication environments. For the UAV scatterers, based on multipath clusters and assumptions about the distribution of scattering points, a multipath cluster-coruscate model is established. Under the condition that the coruscating points obey the nor...Show More
A Novel 3-D Massive MIMO Channel Model for Vehicle-to-Vehicle Communication Environments
This paper presents 3-D vehicle massive multiple-input multiple-output (MIMO) antenna array model for vehicle-to-vehicle (V2V) communication environments. A spherical wavefront is assumed in the proposed model instead of the plane wavefront assumption used in the conventional MIMO channel model. Using the proposed V2V channel model, we first derive the closed-form expressions for the joint and mar...Show More
Wide-band VHF scattering from a trihedral reflector situated above a lossy dispersive halfspace
The method of moments (MoM) is used to rigorously analyze wide-band VHF scattering from a perfectly conducting trihedral placed above a lossy, dispersive half space. The method of complex images is employed to evaluate the layered-medium Green's function efficiently and is applied here to the half-space problem. Particular attention is placed on the physics that underlie scattering from such targe...Show More
Passive three-axis stabilization of a nanosatellite in low-altitude orbits: Feasibility study
2018 25th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS)
Year: 2018 | Conference Paper |
Cited by: Papers (5)
The possibility of implementing passive three-axis stabilization of a nanosatellite of the CubeSat format in low circular orbits is shown for the case when the aerodynamic moment is determining the motion of the nanosatellite relative to the center of mass, which ensures the stabilization of the longitudinal axis of the nanosatellite, while the stabilization of the transverse axes of the nanosatel...Show More
Capacity and SNR Analysis of a Millimeter Wave Cellular Network with Phased Antenna Array
2018 International Conference on Computer Communication and Informatics (ICCCI)
Year: 2018 | Conference Paper |
Cited by: Papers (4)
Channel capacity of a Millimeter(MM) wave cellular network employing phased antenna array (uniform linear antenna array) and the array output signal to noise ratio is analyzed. Millimeter wave as the name indicates working on a very high frequency band 28, 38, and 72 GHz bands results in antenna size in millimeter. Therefore the antennas are integrated on chip and they are also steerable to achiev...Show More
A Compact Representation of the Head-Related Transfer Function Inspired by the Wavelet Transform on the Sphere
Jorge Trevino;Shichao Hu;Cesar Salvador;Shuichi Sakamoto;Junfeng Li;Y-Oiti Suzuki
2015 International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP)
Year: 2015 | Conference Paper |
Cited by: Papers (2)
The head-related transfer function (HRTF) characterizes the propagation of sound from its source to the listener's ears. It is commonly used in the research of spatial sound and its applications. The HRTF takes different values depending on the source's position relative to the listener and its frequency. Storing its values directly results in considerably large data sets. Previous research to enc...Show More
A novel fitting algorithm based on Bacterial Swarm Optimizer for stochastic data
2013 5th Computer Science and Electronic Engineering Conference (CEEC)
Year: 2013 | Conference Paper |
This paper proposes a novel stochastic algorithm, which aims to describe the random distributions of experimentally acquired data. Generally, such data can be satisfactorily modeled through the use of a Gaussian distribution. However, it is not always the case, instances can arise in which the distributions of measured data are not strictly Gaussian in their nature. The present work adopts Bacteri...Show More
Passive Stabilization Systems for CubeSat Nanosatellites: General Principles and Features
2019 26th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS)
Year: 2019 | Conference Paper |
Cited by: Papers (4)
This paper studies the dynamics of the angular motion of CubeSat nanosatellites with the passive stabilization systems of different types: aerodynamic, aerodynamic-gravitational, gravitational, gravitational-aerodynamic systems. The research was carried out in a probabilistic formulation. Using the obtained analytical distribution functions of the maximum angle of the nanosatellite longitudinal ax...Show More
Rotor angle wind turbine energy capture control
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
In wind turbines the power generation (power capture) and output torque depends on wind speed. Due to the rapid variations in wind speed, wind and inflow angle evaluating the output power becomes a challenging problem. Many optimization control techniques seek to extract the output power continuously. This paper focusses on dynamic analysis and control of variable wind turbine's rotor yaw angle an...Show More
A Rosenblatt Transformation Method Based on Copula Function for Solving Structural Reliability
2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)
Year: 2019 | Conference Paper |
Rosenblatt transformation is a general method for transforming a group of non-normal random variables into a group of equivalent independent normal random variables. However, this method is not suitable for the problem of unknown joint distribution function. In view of the above problems, the joint distribution function is constructed by the Copula function in this paper, and the transformation pr...Show More
An AOA Limited Scattering Model and Its Statistics in Next Generation Wireless Communications
This article proposes a geometrically-based wireless channel model with limited Angle of Arrival (AOA). This model assumes that the line-of-sight (LOS) paths are obscured and scatterers are distributed within the scattering angle around a mobile station, resulting in the AOA received by the base station being limited to a certain range. Such a single bounce scattering models can be used for differ...Show More
A Novel Wideband MIMO Car-to-Car Channel Model Based on a Geometrical Semi-Circular Tunnel Scattering Model
In this paper, we present a wideband multiple-input multiple-output (MIMO) car-to-car (C2C) channel model based on a geometrical semi-circular tunnel (SCT) scattering model. From the geometrical SCT scattering model, a reference channel model is derived under the assumption of single-bounce scattering in line-of-sight (LOS) and non-LOS (NLOS) propagation environments. In the proposed reference cha...Show More
Modeling power angle spectrum and antenna pattern directions in multipath propagation environment
12th European Conference on Antennas and Propagation (EuCAP 2018)
Year: 2018 | Conference Paper |
Cited by: Papers (8)
Most propagation models do not consider the influence of antenna patterns on the parameters and characteristics of received signals. This assumption is equivalent to the use of isotropic or omnidirectional antennas in these models. Empirical measurement results indicate that the radiation pattern, gain and direction of directional antennas significantly influence on properties of the received sign...Show More
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