F. AhmadG.J. FrazerS.A. KassamM.G. AminIEEEInternational Conference on Acoustics, Speech, and Signal ProcessingS. Kassam, F. Ahmad, G. Frazer, and M. Amin, "A new approach for near- field wideband synthetic aperture beamforming," in Proc. IEEE ICASSP, Hong Kong, Apr. 2003, pp. ...
Near-field broadband array beamforming using wave equation transformation Given a broadband frequency versus angle beampattern specification in the near field, a methodology is developed to yield a filter?bank design for an array... RA Kennedy,P Thushara,D Abhayapala,... - 《Journal of the Acous...
91Low-Complexity Precoding for Extremely Large-Scale MIMO Over Non-Stationary ChannelsXu, Bokai, etal. 92Multi-Beam Design for Extremely Large-Scale RIS Aided Near-Field Wireless CommunicationsLinglong Dai, etal. 93Active RISs: Signal modeling, asymptotic analysis, and beamforming designLinglong Dai,...
Antennas that can operate across multiple communication standards have remained a challenge. To address these limitations, we propose a Field-Programmable Radio Frequency Surface (FPRFS), which is based on manipulating current flow on its surface to achi
for filtering and phase-shifting, which can realize the two-dimensional (2D) beam-steering performance. In Supplementary Information Note7, the design of the element and its simulated properties are presented. Through simulations, the 2D beamforming is also verified by using an array with 10×10...
One simple approach to estimating the worst-case execution time is to analyze the maximum number of eBPF instructions a codelet can exe- cute. This information is inferred through static analysis for the codelet's longest path, taking into account bounded loops. However, it is very difficult to...
The large array aperture in comparison to the model scale produces a low depth of field, which in return leads to an increased depth resolution, and permits the use of three-dimensional beamforming focus grids. Further, we discuss the selection of measurement configurations that allow separating ...
Far-field pattern of three reflected beams redirected from normal incidence. The beam direction is measured with reference to the normal to the RIS. Full size image Conclusion In this paper, we proposed a reconfigurable metasurface with integrated reflecting and sensing capabilities, which was designed...
beamformer- a beamforming example with several different beamforming options. binauraliser- convolves input audio with interpolated HRTFs, which can be optionally loaded from a SOFA file. dirass- a sound-field visualiser based on re-assigning the energy of beamformers. This re-assignment is based...
16. This must be a near field beamformer since the distance from one end of the geophone array 132 to the other (the aperture of the array 132) could be significant compared to the distance from the earth surface to the seismic source, the drill bit 122. The waves received by the ...