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Hybrid interferometry for high-resolution DOA measurement

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1 Author(s)
Baghdady, Elie J. ; EJB Res. Assoc., Weston, MA, USA

The author introduces and examines a novel approach to long-baseline, phase-comparison, paired antenna interferometry. In this approach, high-resolution (or `fine') direction-of-arrival (DOA) measurement is based, as usual, on direct measurement of the phase difference between the outputs of two widely spaced antennas, but the attendant long-baseline ambiguity is resolved by a different (`coarse') method of DOA measurement. The result, hybrid interferometry, permits the design of DOA determination systems that combine desirable characteristics (such as high resolution and accuracy, simplicity, low cost, self-calibration, etc.) of different methods of extracting DOA data from the simultaneous outputs of antenna elements that are positioned in diverse arrangements for realizing complementary apertures

Published in:

Aerospace and Electronics Conference, 1989. NAECON 1989., Proceedings of the IEEE 1989 National

Date of Conference:

22-26 May 1989