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The effects of relative source strength and signal-to-noise ratio on angular resolution of antennas

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1 Author(s)
B. D. Steinberg ; University of Pennsylvania, Philadelphia, Pa.

High angular resolution is a desirable property of mapping and reconnaissance radar systems. The synthetic-aperture principle reduced the beamwidth of airborne radar by as much as two orders of magnitude. Notwithstanding the long interest in the subject, a quantitative relationship is lacking between beamwidth and resolution. This paper is an attempt to overcome this deficiency. Among its several results, it is shown that the angular resolution of synthetic-aperture radar can be considerably poorer than expected. It is also shown that a modest tapering of the synthetic aperture in those cases offers significant improvement.

Published in:

Proceedings of the IEEE  (Volume:62 ,  Issue: 6 )