near-field calculation method
Matrix Method for Antenna Plane Wave Spectrum Calculation Using Irregularly Distributed Near-Field Data : Application to Far-Field Assessment
... the near-field plane wave expansion (PWE) based on 2-D Discret Fourier Transform (DFT) allowing the far-field calculation is not ...irregular near-field is interpolated to reconstruct a regular ...
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An Analytic Expression for Near-Field Angular Glint Prediction of Radar Sensor Using Far-Field Scattering Centers Models
... At present, two theories namely wavefront distortion and energy flux density tilt are usually adopted to explain the generation of angular glint, corresponding to two calculation methods-phase gradient ...
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Axisymmetric Magnetic Field Calculation with Zonal Harmonic Expansion
... magnetic field calculation method has several important ...the field and source equations are separated: during the source constant computations one has to use only the source point and source ...
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A Near-Field Target Localization Method for MIMO Radar
... In order to obtain more accurate and stable estimates, this paper introduces the fuzzy C-mean (FCM) algorithm [14] in the case of considering the computational error. This algorithm sets the estimated value of the ...
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Analytical calculation of intrinsic shielding effectiveness for isotropic and anisotropic materials based on measured electrical parameters
... the near field so- lution and the model from Moser contains an exact solution for the magnetic near field ...for calculation of shielding effectiveness of parallel- plate-shields, was ...
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Optical Near Field Study of Ag Nanowires by the Differential Method
... magnetic field distributions can be ob- tained by summation over all the ...by calculation of the energy conservation and the convergence of the extinction while increasing the num- ber of ...
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E-Field Extraction from h -Near-Field in Time-Domain by Using Pws Method
... EM- field calculation technique is carried out by taking into account the evanescent wave ...the near-field approach, the arbitrary distance z 0 between the EM-field mapping plan and ...
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Application of the Cosine Window Function with the Parameters Optimized by Genetic Algorithm in Bistatic Planar Near-Field Scattering Measurements
... planar near- field scattering measurements so as to effectively improve the mea- surement ...planar near-field scattering mea- surement technique is studied by the method of computer ...
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The Ionized Field Calculation Under Different Haze Weather Levels Based on Improved Upstream Meshless Method
... field near high voltage direct current (HVDC) transmission ...Petrov-Galerkin method (MLPG) is proposed to investigate the distribution of ionized electric field, and example of an actual transmission line is ...
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Safety Distance Determination for 500 kV AC Transmission Line’s Helicopter Inspection
... inspection method, helicopter line patrol is gradually more and more used in trans- mission lines inspection, promoting the elaborate operation of transmission lines and reducing the management ...conductor' ...
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A SRR-Based Near Field RFID Antenna
... bandwidth of antenna prototype is 13 MHz (914.5–927.5 MHz) with reflection coefficient less than −10 dB, which covers the China RFID band II (920–925 MHz). Simulation shows that the proposed antenna achieves a strong and ...
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Calculation of permanent distortions aggregated by the alize method and the finished elements method
... Traditional roadway sizing methods appear to be too simplistic in a set of situations where the elastic layers model has no justification. For roadway constituent materials, it is necessary to include quite realistic ...
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Assessment of Developing of the Grain Market Stability
... monographic, method of analysis and synthesis, settlement and constructive method, economic and statistical methods) allowed to obtain results which are characterized by its ...
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Near field/far field interface of a near surface low level radioactive waste site
... In order to model the processes occurring at the interface it is essential to understand the properties and evolution of the near-field leachates that are ingressing into the far-field. Trench wastes ...
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A fully probe corrected near-field far-field transformation technique employing plane-wave synthesis
... For the spherical NFFF transformation the filter of Fig. 3 is directly applied to the acquired near-field data of Fig. 8. Eval- uating Eq. (9) for the cyclically rotated versions of the filter coefficients ...
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Vol 11, No 6 (2020)
... sub near-field space of a Γ -near-field space over near-field, Fuzzy Kalangi non-associated Γ -semi sub near-field space ideal, Fuzzy Kalangi non-associated Γ -semi ...
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Calculation Method about Brittleness Index in Qijia Oil Field Tight Sandstone Reservoir Daqing China
... this method cannot completely really reflect the rock under formation factor influence brittle index, and poor continuity, therefore, must establish the relationship between rock brittleness index and logging ...
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A Super-Resolution Near-Field Scattering Centers Extraction Method for Spherical Wavefront Curvature Compensation
... The geometry of the turntable target imaging is illustrated in Fig. 1, in which a target consists of independent and non-directional scattering centers, and its scattering reflectivity is g (x, y) with coordinate (x, y). ...
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Near field effect on elasticity measurement for cartilage-bone structure using Lamb wave method
... Shear wave elastography (SWE) is a newly developed non-invasive detection method based on elasticity detection [7, 8]. It has been widely used in the elasticity detection of vari- ous tissue lesions, such as liver ...
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Near-field measurement of continuously modulated fields employing the time-harmonic near- to far-field transformation
... Figure 1. The long-time measurement approach consists of four steps (a) where the field signal is present in different forms. The NF signal is measured in the time-domain and the frequency spectrum is calculated ...
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