Closed-form eigenstructure-based direction finding using arbitrarybut identical subarrays on a sparse uniform Cartesian array grid

Authors:
M.D. Zoltowski;K.T. Wong
Affiliations:
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN;-
Venue:
IEEE Transactions on Signal Processing
Year:
2000

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Abstract

A sparse uniform Cartesian-grid array suffers cyclic ambiguity in its Cartesian direction-cosine estimates due to the spatial Nyquist sampling theorem. The proposed MUSIC-based or MODE-based algorithm improves and generalizes previous disambiguation schemes that populate the thin array grid with identical subarrays-such as electromagnetic vector sensors, underwater acoustic vector hydrophones, or half-wavelength spaced subarrays