后勤工程学院学报
後勤工程學院學報
후근공정학원학보
JOURNAL OF LOGISTICAL ENGINEERING UNIVERSITY
2014年
1期
84-88
,共5页
仝建武%刘良兵%李子豪%杨国瑞
仝建武%劉良兵%李子豪%楊國瑞
동건무%류량병%리자호%양국서
同频融合%分层算法%相位差测量%全相位谱%实时性
同頻融閤%分層算法%相位差測量%全相位譜%實時性
동빈융합%분층산법%상위차측량%전상위보%실시성
identical-frequency fusion%hierarchy algorithm%phase difference measure%all-phase spectrum%real-time
同频融合算法在处理频率快速变化的信号等应用中具有精度高、抗噪性好的优点,然而该算法实时性较差且精度受相位差测量影响较大。提出了基于全相位的同频融合分层算法,通过设计分层算法以减少多重循环中的冗余计算单元,可在不牺牲精度的前提下成倍降低运算量;采用全相位谱分析法降低相位差测量误差,明显改善了相位差补偿效果。理论分析与对比实验表明,该算法对同频融合过程有显著的改进效果。
同頻融閤算法在處理頻率快速變化的信號等應用中具有精度高、抗譟性好的優點,然而該算法實時性較差且精度受相位差測量影響較大。提齣瞭基于全相位的同頻融閤分層算法,通過設計分層算法以減少多重循環中的冗餘計算單元,可在不犧牲精度的前提下成倍降低運算量;採用全相位譜分析法降低相位差測量誤差,明顯改善瞭相位差補償效果。理論分析與對比實驗錶明,該算法對同頻融閤過程有顯著的改進效果。
동빈융합산법재처리빈솔쾌속변화적신호등응용중구유정도고、항조성호적우점,연이해산법실시성교차차정도수상위차측량영향교대。제출료기우전상위적동빈융합분층산법,통과설계분층산법이감소다중순배중적용여계산단원,가재불희생정도적전제하성배강저운산량;채용전상위보분석법강저상위차측량오차,명현개선료상위차보상효과。이론분석여대비실험표명,해산법대동빈융합과정유현저적개진효과。
For the signal with fast changing frequency,the identical-frequency fusion algorithm is of high precision and strong noise immunity,but its real-time performance is poor and its precision is largely affected by the error of initial phase measurement. So the identical-frequency fusion and hierarchy algorithm based on all-phase is proposed,in which the all-phase spectrum analysis algorithm is adopted to decrease the initial phase error,and the hierarchy algorithm is designed to reduce the large amount of real-time computation in the multi-loop,which is reduced several times without decrease in precision. As shown in theoretical analysis and comparison experiments,the algorithm can improve the identical-frequency fusion process obviously.