Distributed Acoustic Sensor (DAS) has potential in applications such as hydroacoustic detection. In this paper, a dual-pulse heterodyne distributed acoustic sensor (DAS) system using a semiconductor ...

The final, formatted version of the article will be published soon. This study presents a portable near-infrared laser heterodyne radiometer specifically designed for measuring the column abundance of ...

Abstract: The Rydberg atomic heterodyne technique and resonant structures represent two prominent approaches that can notably enhance the sensing sensitivity of Rydberg atomic receivers in the atomic ...

SFL Missions Inc. has been awarded a competitive bid contract by the Canadian Space Agency (CSA) to conduct a conceptual ...

Abstract: The frequency upconverter provides one of the basic building blocks of heterodyne radio systems. In the TD-3 repeater, two waveguide modulators based on a balanced tee hybrid structure ...

This was verified using an approach called heterodyne detection. “An experienced musician with a good ear can tell the difference when two instruments are out of tune,” Chapman added.

The approach used reference signals generated by lasers to continuously check the transmitted polarization, detected with an ultrasensitive method known as heterodyne detection. APCs reduce data ...