Cramér-Rao Bound for DOA Estimation Exploiting Multiple Frequency Pairs
نویسندگان
چکیده
The Cramér-Rao bound (CRB) for direction of arrival (DOA) estimation exploiting both auto-correlation and cross-correlation information within multiple frequencies the received array signals is derived. It provides a tighter than existing CRB dual-frequency scenario. For frequencies, it much lower its counterpart, also exists greater number sources, thereby validating that frequency pairs can improve accuracy target resolvability.
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ژورنال
عنوان ژورنال: IEEE Signal Processing Letters
سال: 2021
ISSN: ['1558-2361', '1070-9908']
DOI: https://doi.org/10.1109/lsp.2021.3088051