A synthesis of a spatial filter
DOI:
https://doi.org/10.1109/ICATT.1997.1235181Abstract
Any radar station (radio, hydro, etc.) can be divided into two parts: a direction finder and processing system which are being synthesized separately.
Receiving signal is a spatial-domain field that is characterized by spatial distribution of energy in accordance with location of objects and interferences masking these objects. Thus a direction finder must include a device that transforms spatial information about object's coordinates containing in the field parameters into electric signal. For radio and hydroacoustic direction finders an antenna is such a device.
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