Title :
In flight phased array alignment
Abstract :
A method is proposed to perform an in-flight phase alignment on an airborne side-looking phased array when it is subjected to radome errors and scattering by the wings and engine nacelles. The capabilities of the Doppler radar processor are required to reduce the effects of clutter, and the factory alignment of the array is required to provide a useful transmit beam. The root-mean-square errors of the phase corrections are expected to be about 3.4 degrees .<>
Keywords :
aircraft instrumentation; antenna phased arrays; errors; radar antennas; radar equipment; Doppler radar processor; airborne side-looking phased array; aircraft wings; clutter; electromagnetic scattering; engine nacelles; factory alignment; in-flight phase alignment; phase corrections; radome errors; root-mean-square errors; Antenna measurements; Apertures; Discrete Fourier transforms; Error correction; Feeds; Phase measurement; Phase shifters; Phased arrays; Testing; Transmitters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175047
