A Novel High-accuracy Digitalized Measuring Phase Method

摘要：

To measure sampled sequencesphase values accurately,the phase spectrum of all-phase DFT (apDFT for short) is deeply studied in this paper,and apDFTs property of ‘phase invariantis distinctly expounded.Thus the ‘apDFT measuring phase methodis proposed,which can achieve high-accuracy phase measurement without any correcting spectrum operations that the computation amount is decreased greatly.Simulation experiment proves that the measurement accuracy of the proposed method is 5 amount levels higher than that of the type-1 phase difference method in noiseless circumstances,and the mean square error is at least 1/4～1/3 of that of type-1 phase difference method in low-SNR circumstances.

关键词： measuring phase all-phase FFT correct spectrum phase invariant

作者: Xiangdong Huang Zhaohua Wang Limian Ren Yifang Zeng Xiaoyan Ruan

作者单位: School of Electronics and Information Engineering,Tianjin University,Tianjin,300072,China

会议类型: 国际会议

会议名称: 9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）