Phys.org April 2, 2019
Researchers in Israel have demonstrated a ranging system which possesses superior range resolution that is almost completely free of bandwidth limitations. By sweeping over the coherence length of the transmitted signal, the partially coherent radar experimentally demonstrates an improvement of over an order of magnitude in resolving targets, compared to standard coherent radars with the same bandwidth. They developed a theoretical framework to show that the resolution could be further improved without a bound, revealing a tradeoff between bandwidth and sweep time. This concept offers solutions to problems which require high range resolution and accuracy, but available bandwidth is limited, as is the case for the autonomous car industry, optical imaging, and astronomy…read more. Open Access TECHNICAL ARTICLEÂ
Partially coherent radar operation schematics. Credit: Nature Communications, ttps://www.nature.com/articles/s41467-019-09380-x