To address the issue of phase mismatch, mainlobe broadening, image defocusing, and high computational complexity caused by spherical wavefront propagation in near-field imaging of uniform linear array (ULA) imaging sonar, this paper proposes an interpolation-free near-field frequency-domain beamforming algorithm for uniform linear arrays. Under the considered operating conditions, the exact range history is approximated as the...

In recent decades, species distribution models have emerged as essential tools for analyzing the potential effects of climate change on species distributions. This study employed an ensemble model to predict future changes in the distributions of small yellow croaker ( Larimichthys polyactis ) across seasons for the years 2030, 2050, and 2100 under the SSP1-2.6 and SSP2-4.5 climate scenarios of the Sixth Phase of the Coupled M...