Photonic correlators for passive imaging using synthetic aperture radiometry in the microwave band

Correlation radiometers in the microwave and millimeter wave range constitute a useful tool in Earth Observation Science targeting climate change and environmental effects monitoring, and natural hazards assessment. They also play a key role in radiotelescopes aiming at determining the age and composition of the Universe by measurement of the Cosmic Microwave Background, and find application in security screening, substances detection and in the automotive industry as radar image acquisition systems. They basically consist on an array of receivers whose output signals are