Phys.org  June 25, 2021 Light-in-flight sensing has emerged as a promising technique in image reconstruction applications at various wavelengths. A team of researchers in the US (NIST, industry, University of Colorado) has developed a microwave imaging system that uses an array of transmitters and a single receiver operating in continuous transmit-receive mode. Captures take a few microseconds, and the corresponding images cover a spatial range of tens of square meters with spatial resolution of 0.1 meter. The images are the result of a dot product between a reconstruction matrix and the captured signal with no prior knowledge of the scene. […]