Other
Scientific paper
Apr 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995icap.conf..149k&link_type=abstract
International Conference on Antennas and Propagation, Ninth, April 4-7, 1995, p. 149-153
Other
Scientific paper
Holographic antenna metrology has been proved successful for diagnosing parabolic reflector antennas, in particular large earth station reflectors. Inversion of the complex far-field data by Fourier transformation can reveal surface imperfections, feed misalignments, and other phase error terms. We address the problem of direct far-field measurements in which the data is essentially the Fourier modulus. If the aperture amplitude could be measured, then the Gerchberg and Saxton (1972) algorithm could be applied directly. The problem is therefore to find an acceptable aperture estimate and measurement conditions from which a modified algorithm will deliver the phase. A convenient far-field source is a geostationary satellite, which could be a direct broadcasting satellite. Antennas have already successfully been diagnosed using a geostationary source by holographic techniques or more recently using the Misell algorithm. Our ultimate objective is to demonstrate aperture phase recovery using a single intensity data scan from a satellite source. We report our progress with simulated data and far field data obtained via cylindrical near field measurements.
Anderson P. A.
Cook G. C.
Kunze A. R.
Orton R.
No associations
LandOfFree
Phaseless metrology of earth station antennas from satellite borne sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Phaseless metrology of earth station antennas from satellite borne sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phaseless metrology of earth station antennas from satellite borne sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1829612