Radar for detecting and tracking short range airborne targets using a
non-scanning beam to illuminate the entire search space, and processing
the return signals from a plurality of spaced apart receive antennas.
Target angle in one plane may be determined by coherent processing of the
returns from the plurality of receive antennas. Spacing the receive
antennas apart in three dimensions allows determining of two angles, such
as azimuth and elevation. Processing of the returns may be coherent or
noncoherent, or returns may be processed both coherently and
noncoherently. Programmability of the processing algorithms and
parameters provide flexibility in applications, as well as flexibility
based on such things as the target type and its range. Exemplary
applications are disclosed.