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題 名 | Analysis and Performance Evaluation of a Recursive Integration Scheme=遞迴式積分近似法之分析與性能評估 |
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作 者 | 徐學群; 孫郁興; | 書刊名 | Journal of the Chinese Institute of Electrical Engineering |
卷 期 | 6:1 1999.02[民88.02] |
頁 次 | 頁79-86 |
分類號 | 448.6 |
關鍵詞 | 遞迴式積分; 積分參數; 偵測性能; Recursive integration; Integration parameter; Detection performance; |
語 文 | 英文(English) |
中文摘要 | 積分是經常應用在信號處理中之一種增加信號雜訊比的方法。傳統的積分方法, 如直接積分與二元積分,經常要使用大量的記憶裝置以儲存其結果。本文因此提出一個不需 大量記憶裝置的一次遞迴式積分方法,藉由本遞迴與直接積分結果差異之平均值與變異量定 出遞迴積分與直接積分之等效積分參數,並證明此等效積分參數是與雜訊之分佈無關的。各 積分器之性能則藉由在 Rayleigh 分佈之雜訊中偵測一個定振幅之目標信號之能力進行評估 與比較,結果顯示遞迴積分器之性能優於其他兩種積分器,故其具有最佳之價格性能值。 |
英文摘要 | Integration is a technique to increase the signal-to-noise ratio in many signal processing applications. Traditional integrating schemes, e.g., direct integration and binary integration, often need large amounts of memory. In this paper, a first-order recursive integration scheme is designed whose integration parameter is derived by minimizing the mean and variance valuse of differences between each recursive and direct integration process. These parameters are proved to be independent of the distribution of noise. The performances of detecting a constant amplitude target within noise of Rayleigh distribution by the recursive, direct, and binary integrators are evaluated and compared. The result indicates that the detection performance of the recursive integrator is better than other two integrators. Hence the recursive integrator is the most cost-effective one. |
本系統中英文摘要資訊取自各篇刊載內容。