This article describes the use of a commercial software-defined radio (SDR) to generate an intentional interfering signal for protection against drones. The system aims to counter unauthorized and ...

Abstract: High-gain reflector antennas commonly used to make observations in radio astronomy are especially susceptible to the reception of undesirable radiation through their sidelobes. One source of ...

Abstract: This paper present design and build a low-cost and portable ground station to receive NOAA satellite APT images. Many believe that building a ground station requires expensive and special ...