Interferometric imaging of a rotating sphere using synthetic aperture techniques

Interferometry has been used for decades to image distant electromagnetic sources at long wavelengths. However, the long data collection intervals have prevented imaging rotating objects such as planets. We show that one can craft an interferometric imaging algorithm using synthetic aperture beamforming techniques by linear beamforming in the correlation domain data rather than the signal-domain data. We then use this analogy to show how it is possible to create previously unrealized interferometric images of a rotating spherical blackbody