摘要
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。
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.
出处
《后勤工程学院学报》
2014年第1期84-88,共5页
Journal of Logistical Engineering University
关键词
同频融合
分层算法
相位差测量
全相位谱
实时性
identical-frequency fusion
hierarchy algorithm
phase difference measure
all-phase spectrum
real-time
