If we look on large enough scales, matter should be distributed evenly, with no preferred direction within the cosmos. This is known as the cosmological principle.

This paper presents the optimization performance of non-uniform linear antenna array with optimized inter-element spacing and excitation amplitude using Particle Swarm Optimization (PSO). The aim of ...

Abstract: Rigorous phased array calibration is critical to ensure accurate array radiation performance. This communication presents a novel phased array calibration method based on extrapolation of ...

A coprime array with fewer sensors can achieve the same resolution as a uniform linear array. However, when detecting co-frequency targets, there can be prominent false alarms due to overlaps between ...

Abstract: Sparse arrays offer evident advantages over their uniform linear counterparts, including larger aperture and higher angular resolution. Despite their benefits, typical sparse arrays, such as ...

A ruptured front obtained from high-frequency energy radiation is the key to understand the complex source. It is commonly observed that rupture fronts derived from different arrays often show some ...

1 Electrical Engineering Department, Cross River University of Technology, Calabar, Nigeria. 2 Faculty of Engineering, University of Calabar, Calabar, Nigeria. 3 Niger Delta University, Wilberforce ...

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