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題名 | Passive Localization of Near-Field Wide-Band Sources by Coherent Signal-Subspace Processing=以同調訊號子空間法進行被動式近場寬頻訊號源定位 |
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作者姓名(中文) | 洪賢昇; 劉為光; | 書刊名 | 中國工程學刊 |
卷期 | 22:2 1999.03[民88.03] |
頁次 | 頁211-220 |
分類號 | 448.6 |
關鍵詞 | 訊號源定位; 同調訊號子空間處理; 近場; 矩陣波束構成器; Source localization; Coherent signal-subspace processing; Near field; Matrix beamformer; |
語文 | 英文(English) |
中文摘要 | 本論文提出一方法,利用感測器陣列接收的資料來進行近場寬頻訊號源之方位, 仰角,和源距估測。此方法乃調整同調訊號子空間法,使其適用於近場寬頻訊號源之定位。 對於訊號源集中於多重群集時,此法使用降低維數的矩陣波束構成器來簡化寬頻處理。矩陣 波束構成器的設計準則,係對於訊號源可能的群集的區域,使訊雜比平均值最大化。此方法 結合束波和聚頻的訊號處理,可視為同調訊號子空間的細胞空間域版本。電腦模擬驗證所提 方法可有效估測近場寬頻訊號源之位置。 |
英文摘要 | In this paper, the bearing, elevation, and range estimation of near- field wide-band sources from data observed across an array of sensors is consideered. Cherent signal-subspace processing for bearing estimation is tailored for localization of wide-band sources located in the near field. For sources located in multiple groups (clusters) , a matrix beamformer for dimensionalty reduction is utilized to simplify wideband processing. The matrix beamformer is used to maximize the average signal-to-noise ratio over cells where sources are likely located. A version of coherent signal subspace processing in cell space, which combines beamforming and focusing, are developed and comparative performances are carried out by means of Monte Carlo simulations. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。