Calculation of the frequency-shifted signal parameter based on the polynomial phase model

摘要：

In this paper,a polynomial model was used to describe the phase of a frequency-shifted signal and the harmonic wavelet.The sinc function was applied to the signal as a window function.The coefficient of the modified harmonic wavelet transform was used as a target function.We use the Anneal-Simulation arithmetic in finding the global maximum value of the target function.Then the parameter of the signal,including the initial phase and different orders of the phase changing rate,such as the frequency,the first order of the frequency-changing rate,and higher order of the frequency-changing rate,can be calculated.Even when noise exists,the main parts of the changing-rate of the signal phase can be got precisely.Applying this method on short signal,we can expect much better resolution than ordinary arithmetic based on FFT.

作者: YuZhi.Tang YuanLiang.Ma ZhongYi.Cai

会议类型: 国际会议

会议名称: Asia Simulation Conference 2008/the 7th International Conference on System Simulation and Scientific Computing(2008亚洲仿真会议/第七届系统仿真和科学计算国际会议)(ICSC2008)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-10（万方平台首次上网日期，不代表论文的发表时间）