The Defense Advanced Research Projects Agency (DARPA) today announced that researchers have, for the first time, produced a synthetic aperture image from an airborne laser radar (also known as "ladar"). Up until this time, only radar has been able to generate a synthetic aperture image. Synthetic apertures use digital signal processing and aircraft motion to generate very high-resolution imagery from relatively small physical apertures.
The achievement is the culmination of the first phase of DARPA’s Synthetic Aperture Ladar for Tactical Imaging (SALTI) program, which is aimed at applying radar image collection and processing technology to optical wavelengths.
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