摘要
针对数字相位信号的检测特点,以矢量内积的理论为基础,提出了一种在数字信号处理(DSP)芯片上采用矢量内积的检相原理实现相位差测量的新方法熏并介绍了这种检相系统的设计,给出了仿真结果,分析了检测误差。该系统不仅可消除信号幅值变化带来的影响,保证测量精度,提高系统的稳定性,且可实现实时在线处理,具有很高的实用性。
A new way of digital phase detector applied to the phase difference measurement is introduced in accordance with the characteristic of phase signal and the theory of inner product in this paper, which is realized on DSP chip TMS320VC5402.The system can improve the system's stability and enhance the measurement precision through eliminating the effect that is caused by the range changing of signal, also can realize process in real time online .The measurement result shows this method has high potential of application.
出处
《电测与仪表》
北大核心
2004年第10期16-18,共3页
Electrical Measurement & Instrumentation
基金
湖北省教育厅重点科研基金资助项目(2003A002)
关键词
矢量内积
DSP
相位差测量
inner product
DSP
phase difference measurement
