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Difference-Frequency MUSIC for DOAs
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DOI：10.1109/LSP.2022.3230365.png)
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摘要
En 中文
The direction-of-arrivals (DOAs) of plane waves in a high-frequency region are estimated without spatial aliasing using multi-frequency processing. The method exploits the difference frequency (DF), the difference between two high frequencies. This enables processing data in a feasible region without spatial aliasing. We analyze DOA characteristics upon DF processing and propose a MUSIC-based method dealing with multi-DF and multi-snapshot. Multiple DFs having the same frequency difference allow processing multi-DF equivalently to multi-snapshot. We propose a method that considers all DFs and snapshots jointly and a joint DF method providing a single snapshot DF-MUSIC that does not require stationary DOAs. Numerical examples validate the effectiveness of the proposed method and its DOA performance is discussed.
Keyword:
Array signal processing
direction of arrival (DOA) estimation
wideband sources
difference frequency
期刊
IF:
9.6
论文数:
1.1W
被引数:
1.7W
机构
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