APER­TURE AR­RAY AND IN­TER­FER­OM­E­TRY

Cosmos - - Cover Story -

The aper­ture ar­ray can trace the source of a sig­nal by mea­sur­ing the de­lay with which it ar­rived at each an­tenna.

By in­tro­duc­ing dif­fer­ent elec­tronic de­lays at each an­tenna, they can be fo­cused on the same part of the sky.

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