A circular array includes a plurality of antenna\nelements which are spaced apart from each other and situated in\na conical arrangement and in parallel rows circumferentially\nabout the longitudinal axis of the conical arrangement. The\ncircumferential spacing between the phase centers of adjacent\n...
In this study, a model of two nonlinear spring masses subjected to a smooth friction-velocity curve is examined. The second order governing system of motio... T Amer,MO Shaker,HA Dahab - 《Journal of Low Frequency Noise Vibration & Active Control》 被引量: 0发表: 2023年 Synchronization Ge...
Working in collaboration, the 313 sun-gazers will form a huge virtual telescope at a frequency range from 150 to 450 megahertz, to achieve high-precision imaging of solar events. The DSRT has since March last year conducted a number of scientific observations and acquired a large number of sol...
Purpose – Frequency diverse array (FDA) radar with uniform frequency offset between antenna elements has been proposed and investigated, which exhibits a... H Ling,L Xiang,C Peng,... - 《Compel International Journal for Computation & Mathematics in Electrical & Electronic Engineering》 被引量: ...
Visualize the pattern for the linear array in 3-D space at the design frequency. pattern3Dfig = figure; pattern(dipole_array,freq) Plot 2-D Radiation Pattern The 3-D pattern of the array shows the maximum of the beam at an azimuthal angle of 90 deg. Plot the 2-D radiation pattern in...
correlationCorrelation coefficient between two antennas in array currentCurrent distribution on antenna or array surface designDesign prototype antenna or arrays for resonance around specified frequency or create AI-based antenna from antenna catalog objects ...
Currently, shortwave broadcasting in the range of 5.9–26.1 MHz remains a relatively large blind spot within 900 km owing to the limitations of ionospheric characteristics. Reducing the emission frequency is a feasible approach for covering bli
The Frequency Diverse Array (FDA) has a beampattern depending on both range and azimuth so it has great potential in active sensing applications. However, the range and azimuth is coupling in FDA. Especially in multiple target scenario, the existing methods suffer from problems such as coupling ...
In addition to the individual activities, our 3D high-density MEA made it possible to measure the frequency of the in vitro burst activity, i.e., the repeated high-frequency firing of neurons. Burst activity is an essential factor in neuronal communications both in vitro and in vivo45,46. ...
Turbopause determination, climatology, and climatic trends using medium frequency radars at 52°N and 70°N [1] We explore methods for identifying the turbopause in its various guises using results from the medium frequency (MF) radars at Saskatoon (52°N) and... CM Hall,CE Meek,AHM And...