- 期刊
Signal Subspace Transformation for Direction-of-Arrival Estimation of Wideband Sources in Near Field
並列摘要
A novel adaptive signal subspace transformation for direction-of-arrival (DOA) estimation of wideband sources in the near-field is proposed in this paper. The method is composed of two transformations: signal subspace focusing (SSF) and far-field transformation (FFT). SSF aliens the signal subspaces for different frequencies in the bandwidth of the sources based on focusing matrices. EFT transforms the near-held steering vector to be the far-field steering vector with same direction-of-arrival (DOA) allocation. By the way, we simplify the location estimation of wideband sources in the near-field to be narrowband sources in the far field. The proposed method can track the DOAs and ranges of near-field wideband sources, simultaneously. Simulation results and water-tank experiments confirm the feasibility and efficiency of the proposed adaptive DOA estimation method in underwater environments.
延伸閱讀
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