Synthetic Thinned Array Radiometers
Spatial interferometers cross-correlate signals originating from two separated antennas in order to sample Fourier components of the angular brightness temperature distribution.   This was first attempted for radio astronomy imagers and later for Earth remote sensing.  The STAR approach is currently being used by the European Space Agency for their Soil Moisture Ocean Salinity (SMOS) Mission. 

We are involved in numerous aspects of the development of technology, system engineering and image reconstruction related to the realization of the STAR concept as a practical high-quality imaging radiometer for accurate science applications.  Recent activities are concentrated on development of the GeoSTAR ground based prototype of a Geosynchronous temperature and water vapor sounder and the Lightweigth Rainfall Radiometer aircraft prototype of a low earth orbiting precipitation imager.