near field-far field transform
Near-field measurement of continuously modulated fields employing the time-harmonic near- to far-field transformation
... the field signal in the time-domain for such a long time that all relevant frequency components can be resolved and distinguished, followed by a Fourier ...Fourier transform is performed for every ...
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NUFFT-Accelerated Plane-Polar (Also Phaseless) Near-Field/Far-Field Transformation
... Fourier Transform (NUFFT) routines in “complex” ...phaseless Near-Field/Far-Field ...non-regular field sampling prevents the use of standard ...
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A New Approach to Telescope Fourier Optics
... (both near-field and far-field) we have proven the existence of and derived exact near and far-field equations for the Fourier transform of the electric ...
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Application of the Cosine Window Function with the Parameters Optimized by Genetic Algorithm in Bistatic Planar Near-Field Scattering Measurements
... of near-field to far-field transformation in bistatic planar near-field scattering measurements, the far-field scattering characteristics of the target can be ...
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Spherical Near Field Far Field Transformation for Quasi Planar Antennas from Irregularly Spaced Data
... Fourier transform (FFT) [19] has been proposed to compensate the posi- tioning errors in the plane-rectangular [20] and spherical [21] ...EM field, wherein the NF data needed by the corresponding classi- ...
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Phase Shifting Holography for THz Near-Field/Far-Field Prediction
... Off-axis near-field holography requiring the entire hologram pattern was experimentally demonstrated at 94 GHz in ...Fourier transform version of holography by Leith & Upatnieks [2], but requires ...
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Efficient Localization Algorithm of Mixed Far-Field and Near-Field Sources Using Uniform Circular Array
... There has been considerable interest in the passive sources localization with an array of spatially separated sensors, which has many important application areas such as radar, guidance systems and sonar [1]. Various ...
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A comparison of software- and hardware-gating techniques applied to near-field antenna measurements
... typical near-field measure- ment setup within the GSM 1800 range this is approximately 3–4 ns depending on the settling time of the AUT and the probe, ...
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Tailoring Thermal Radiation from Near Field to Far Field
... and near field radiative heat flux modulator by phase changing under different temperatures ...on near field to study radiative heat transfer that is controlled via external electrical ...
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Electronic and Satellite Navigation
... Ez plane of far field,of radiation pattern The plane wave excitation is observed in magnetic field from the near field of matlab simulation of the electronic and satellite na[r] ...
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Multilayer Dielectric Resonator Antenna Transmitarray for Near-Field and Far-Field Fixed RFID Reader
... for far-field RFID ...9 near-field focused DRA transmitarray for fixed RFID at ...the near field-focused transmitarray are compared with that of the far field ...
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Cosmic Wireless Power Transfer System and the Equation for Everything E=mc2=vc2/60=a3/T=G(M1+ M2)/4π2=(KE+PE)/1 0E15=Q=PA/F=λ/hc=1/2q=VI=1/2LI2=1/2CV=I2R=…
... Electromagnetic Field” [8], establishing a theory that unified electrostatic and magnetism to electromagnetism, predicting the existence of electromagnetic waves as the “wireless” carrier of electromagnetic ...
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Exploring surface wave interaction with angled defects in the near and far field
... Abstract. This paper explores some effects that occur when using laser ultrasound to scan defective samples. Surface defects can often propagate at an angle to the surface; however, for calibration, slots machined normal ...
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Jrdf Algorithm for Joint Range-DOA-Frequency Estimation of Mixed Near-Field and Far-Field Sources
... with far- field sources (FFSs) [2–5] or near-field sources (NFSs) ...in near-field (NF) or far-field (FF) since speakers’ positions keep ...
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Performance of Intez Tank Under Near Fault And Far Field Earthquake Motion
... The aim of the study is analyses seismic effect on different shape and types elevated water tank due to near fault and far field earthquakes. So it is very important to select proper supporting ...
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An Analytic Expression for Near-Field Angular Glint Prediction of Radar Sensor Using Far-Field Scattering Centers Models
... In this paper, we focus on the calculation of angle glint at near field. Based on the phase gradient method, we derive the exact expression of angle glint, which is applicable for the ...
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Near and far field aerodynamics in insect hovering flight: an integrated computational study
... Fig.·3Aiv,v,Biv,v,Civ,v,Diii shows that removing the body changes the vortex wake structure only slightly. Specifically, the trace of the shed TEV seems to expand slightly now that the barrier formed by the body is ...
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Performance of profiled single noise barriers covered with quadratic residue diffusers
... There are a number of methods that can be applied to improve the efficiency of barriers, such as increasing a barrier’s height, utilising sound absorbing materials and different profiles at the top edge. The performance ...
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Frequency-Domain Blind Source Separation of Many Speech Signals Using Near-Field and Far-Field Models
... We have proposed a robust and precise method by com- bining the DOA-based method and the correlation-based method, which almost completely solves the permutation problem for two sources that come from different directions ...
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Influence of Passive Isolator Parameters on Seismic Response Control of Multi-Span Bridges
... different near-field and far-field earthquakes, to study the effect of the isolator parameters on the seismic response of the isolated bridge and to investigate the optimum parameters of the ...
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