Synthetically thinned aperture radar

Synthetic thinned aperture radiometry (STAR) is a method of radar in which the coherent product (correlation) of the signal from pairs of antennas is measured at different antenna-pair spacings (baselines).wikipedia
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Radar

radar stationradarsradar system
Synthetic thinned aperture radiometry (STAR) is a method of radar in which the coherent product (correlation) of the signal from pairs of antennas is measured at different antenna-pair spacings (baselines).

Fourier transform

continuous Fourier transformFourierFourier transforms
These products yield sample points in the Fourier transform of the brightness temperature map of the scene, and the scene itself is reconstructed by inverting the sampled transform.

Signal-to-noise ratio

signal to noise ratioSNRsignal-to-noise
A disadvantage is the reduction of radiometric sensitivity (or increase in rms noise) of the image due to a decrease in signal-to-noise ratio for each measurement compared to a filled aperture.

Beamforming

beam formingbeamformerAntenna beamforming