國立臺灣大學電信工程學研究所李枝宏2006-07-262018-07-052006-07-262018-07-052003-07-31http://ntur.lib.ntu.edu.tw//handle/246246/20275本計劃已完成預期之研究工作一(1) 研究發展分析應用信號週期穩態特性可適 性陣列波束成型器對所欲信號之週期頻率 誤差之敏感性，並藉此推導一新而有效之 性能變差之數學理論公式。以期望能獲得 具體之數學理論公式來表示可適性陣列波 束成型器性能變差之現象，而且可明確的 由實驗模擬來加以驗證。 (2) 研究發展分析應用信號週期穩態 特性具有信號選擇能力的信號方位估測器 對所欲信號之週期頻率誤差之敏感性，並 藉此推導一新而有效之性能變差之數學理 論公式。以期望能獲得具體之數學理論公 式來表示具有信號選擇能力的信號方位估 測器性能變差之現象，而且可明確的由實 驗模擬來加以驗證。 電腦模擬實驗已驗證本計畫成果之有 效性。This project has accomplished research work for the development of the theory in evaluating the performance of (1) the conventional SCORE algorithms and (2) conjugate cyclic MUSIC in the presence of cycle frequency error (CFE) regarding the Signals Of Interest (SOI). Using the theory of Fourier transform, the problem formulation for the SCORE algorithms under CFE has been completed. This results in an analytical formula which demonstrates the behavior of the performance degradation for the SCORE algorithms. It is shown that the output SINR of an adaptive array beamformer using the SCORE algorithms deteriorates like a sinc function as the number of data snapshots increases. The similar problem for conjugate cyclic MUSIC has been also completed. From the theoretical analyses, we note that the performance of the conjugate cyclic MUSIC also degrades like a sinc function as the number of data snapshots increases. The validity of the obtained theoretical results is demonstrated by several simulation examples.application/pdf175845 bytesapplication/pdfzh-TW國立臺灣大學電信工程學研究所週期穩態信號波束成型方位 估測Cyclostationary SignalsBeamformingBearing Estimationreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/20275/1/912219E002037.pdf