Focusing and defocusing light without a lens: First demonstration of the structured Montgomery effect in free space

Applied physicists in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated a new way to structure light in custom, repeatable, three-dimensional patterns, ...
IEEE

Diffraction and Scattering Aware Radio Map and Environment Reconstruction Using Geometry Model-Assisted Deep Learning

Abstract: Machine learning (ML) facilitates rapid channel modeling for 5G and beyond wireless communication systems. Many existing ML techniques utilize a city map to construct the radio map; however, ...

Did Russia really witness two suns? Inside the rare Sundog phenomenon that stunned Sakhalin residents

Residents of Russia's Sakhalin region were treated to a surreal sight recently: what looked like two suns rising side by side in the morning sky. The .
IEEE

Machine Learning-Based Path Loss Prediction With Novel Diffraction and Morphology Features

Abstract: Several machine learning (ML) algorithms have been applied to predict path loss values, and various features have been proposed as input features in ML models. This study proposed two new ...