HUDSON, R.S.PSALTIS, D.ANDREWS, A.K.2010-11-252010-11-252010-11-25199510.1364/OL.20.002327https://infoscience.epfl.ch/handle/20.500.14299/58909WOS:A1995TD68900023During the past five years, delay-Doppler radar has become the primary technique for studying the structure of Earth-crossing asteroids. None of these objects has yet been visited by spacecraft, so ground-truth test cases are lacking. A laboratory system is described that provides optical-radar images at 0.1-mm resolution. These data are analogous to the highest-resolution asteroid radar images currently available and provided realistic test cases for developing signal-processing techniques. The system can be thought of as a 1/188,000 scale model of the Arecibo radar, or a 1/52,800 scale model of the Goldstone radar. (C) 1995 Optical Society of Americatext::journal::journal article::research article