Published November 2016
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Two-Dimensional Sparse Arrays with Hole-Free Coarray and Reduced Mutual Coupling
- Creators
- Liu, Chun-Lin
- Vaidyanathan, P. P.
Abstract
Two-dimensional sparse arrays with hole-free difference coarrays, like billboard arrays and open box arrays, can identify O(N^2) uncorrelated source directions (DOA) using N sensors. These arrays contain some dense ULA segments, leading to many sensor pairs separated by λ/2. The DOA estimation performance often suffers degradation due to mutual coupling between such closely-spaced sensor pairs. This paper introduces a new 2D array called the half open box array. For a given N, this array has the same hole-free coarray as an open box array. At the same time, the number of sensor pairs with small separation is significantly reduced.
Additional Information
© 2016 IEEE. This work was supported in parts by the ONR grant N00014-15-1-2118, the California Institute of Technology, and the Taiwan/Caltech Ministry of Education Fellowship.Attached Files
Submitted - Chun-LinAsil2016.pdf
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Additional details
- Eprint ID
- 71893
- Resolver ID
- CaltechAUTHORS:20161109-150012043
- N00014-15-1-2118
- Office of Naval Research (ONR)
- Caltech
- Ministry of Education (Taipei)
- Created
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2016-11-09Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field