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长安大学电子与控制工程学院自动控制原理英文课件Chapter 09 Stability in the Frequency Domain
长安大学电子与控制工程学院 自动控制原理 英文课件 Stability Frequency Domain
2020/1/8
长安大学电子与控制工程学院自动控制原理英文课件Chapter 09 Stability in the Frequency Domain。
A SPATIAL DOMAIN AND FREQUENCY DOMAIN INTEGRATED APPROACH TO FUSION MULTIFOCUS IMAGES
multifocus image fusion Sum-modified-Laplacian stationary wavelet transform
2015/12/31
A spatial domain and frequency domain integrated approach was proposed to fusion multifocus images. The proposed multifocus image fusion algorithm was composed of computing Sum-modified-Laplacian(SML)...
Demonstration of Nonlinear Frequency Domain Methods
Demonstration Nonlinear Frequency Domain Methods
2015/7/2
This paper demonstrates the accuracy of the nonlinear frequency domain method in applications to unsteadyflow calculations. The basis of the method is a pseudospectral approach to recast a nonli...
Optimum Shape Design for Unsteady Three-Dimensional Viscous Flows Using a Nonlinear Frequency-Domain Method
Optimum Shape Design Unsteady Three-Dimensional Viscous Flows Nonlinear Frequency-Domain Method
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady three-dimensional viscousflows.The goal is to develop a set of discrete unsteady adjoint equations and the correspo...
The computational efficiency of non-linear frequency domain methods
Non-linear Frequency Harmonic Balance Unsteady Fluid Dynamics
2015/7/2
This paper demonstrates efficient solver technologies applied to the non-linear frequency domain (NLFD) method.The basis of the NLFD method is to assume the time period of the solutions oscillat...
NON-LINEAR FREQUENCY DOMAIN BASED OPTIMUM SHAPE DESIGN FOR UNSTEADY THREE-DIMENSIONAL FLOWS
NON-LINEAR FREQUENCY DOMAIN BASED OPTIMUM SHAPE DESIGN UNSTEADY THREE-DIMENSIONAL FLOWS
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady flows. The goal is to develop a set of discrete unsteady adjoint equations and the corresponding boundary condition...
OPTIMUM SHAPE DESIGN FOR UNSTEADY FLOWS USING TIME ACCURATE AND NON-LINEAR FREQUENCY DOMAIN METHODS
ACCURATE NON-LINEAR FREQUENCY DOMAIN METHODS
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady flows. The goal is to develop a set of discrete unsteady adjoint equations and their corresponding boundary conditi...
Application of a Non-Linear Frequency Domain Solver to the Euler and Navier-Stokes Equations
Application Non-Linear Frequency Domain Solver Euler Navier-Stokes Equations
2015/7/2
This paper presents a technique used to accelerate the convergence of unsteady flows to a periodic steady state. The basis of this procedure is to assume the time period of the solution’s oscill...
FILTRATION OF AERIAL IMAGES IN SPECTRAL AND FREQUENCY DOMAIN FOR IMPROVING THE ACCURACY OF AUTOMATIC DIGITAL AEROTRIANGULATION
Photogrammetry aerotriangulation matching accuracy digital processing orientation
2015/6/1
Automatic digital aerotriangulation is one of the most essential processes in digital photogrammetry. Nowadays the images used in aerotriangulation are not filtered.The analysis of accuracy of digital...
AN APPROACH TO ESTIMATE OF 2D-3D MOTION OF SURFACES: THE FREQUENCY DOMAIN TECHNIQUE
Algorithms Computer vision Image registration 3D Modeling
2015/1/6
Phase correlation is one of the robustest methods for estimating planar translations: it is a global approach because it operates in the frequency domain using the whole image information and not just...
Choice of the perfectly matched layer boundary condition for frequency-domain Maxwell’s equations solvers
Maxwell’s equations Perfectly matched layer Finite-difference frequency-domain method
2015/8/7
We show that the performance of frequency-domain solvers of Maxwell’s equations is greatly affected by the kind of the perfectly matched layer (PML) used. In particular, we demonstrate that using the ...
Frequency-Domain Equalization for Coherent Optical Transmission Systems
Coherent communications Fiber optics links subsystems
2015/5/26
Frequency-domain equalization (FDE) has been attracting much attention for high-speed long-haul transmission over fiber-optic channels. Two FDE configurations for coherent optical transmission are pre...
Reduced-Guard-Interval CO-OFDM with Overlapped Frequency-Domain CD and PMD Equalization
Reduced-Guard-Interval CO-OFDM Overlapped Frequency-Domain CD PMD Equalization
2015/5/25
We propose an algorithm for CO-OFDM receivers to perform overlapped frequency-domain CD and PMD equalization before OFDM symbol demodulation. This approach enables OFDM transmission with a small cycli...
Scattered Pilot Channel Tracking Method for PDM-CO- OFDM Transmissions Using Polar-Based Intra-Symbol Frequency-Domain Average
Fiber optics communications Modulation
2015/5/25
We have demonstrated an efficient scattered pilot channel tracking approach with a new polar-based intra-symbol frequency domain average (ISFA) for 16-QAM, 40-Gb/s PDM-CO-OFDM systems. This proposal c...
Cyclic Prefix Free 10-Gb/s OFDM for a DML-Based Long- Reach Optical Access Using Joint Time and Frequency Domain Equalization Algorithm
Fiber optics links subsystems Modulation
2015/5/25
Without using a cyclic prefix, a DML-based 10-Gb/s OFDM at 2.5-GHz bandwidth transmission over 65-km SMF is demonstrated to be possible while maintaining the efficient throughput and short-latency tim...