Business Wire

AST SpaceMobile Successfully Completes Unfolding of BlueBird 6, the Largest Commercial Communications Array Antenna Ever Deployed in Low Earth Orbit

MIDLAND, Texas--(BUSINESS WIRE)--AST SpaceMobile, Inc. (“AST SpaceMobile”) (NASDAQ: ASTS), the company building the first and only space-based cellular broadband network accessible directly by ...
IEEE

A Variable Step-size Optimization Method for Non-uniform Antenna Array Aperture Synthetic Radiometers

Abstract: The Aperture Synthetic Radiometer (ASR) is widely used in the field of remote sensing, and antenna array design is a crucial technique for ASR, which determines the final image quality to a ...
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Silent guardians: US submarines in the Taiwan Strait

The Taiwan Strait, a narrow 100-mile stretch of water separating mainland China from Taiwan, represents one of the world’s most dangerous flashpoints. While surface warships and fighter jets grab ...
IEEE

Coarray DOA Estimation with Sparse Arrays Using Variable Window Size Spatial Smoothing

Abstract: In this work, we introduce a variable window size (VWS) spatial smoothing framework that enhances coarray-based direction of arrival (DOA) estimation for sparse linear arrays. By compressing ...