传感技术学报Issue(6)：871-877,7.DOI:10.3969/j.issn.1004-1699.2013.06.023
一种从饱和正弦信号中恢复原信号幅值与相位的方法
An Amplitude and Phase Recovery Method from Saturated Sinusoidal Signal
摘要
Abstract
An amplitude and phase extraction method from the saturated sinusoidal signal is proposed for the electro-magnetic coupling sensing system. This method makes use of the characteristics of “zero-crossing” and signal variation of the sinusoidal signals,so as to extract the valid samples among the total samples including saturated and unsaturated samples. Then the least square fitting method( LSM) is applied to linearly compute the sine and cosine components, as well as the amplitude and phase of the signal. The method is evaluated by the simulations corresponding to the effects of the saturation level on the recovered amplitude and phase parameters. The results show that if there are enough samples,this method can recover the signal with large range(10 times of the saturated level) of the saturation and achieve high signal accuracy and high execution speed. This provides the foundation to accurately extract the signal with a large range measurement even with high saturation.关键词
传感信号处理/电磁耦合/饱和正弦信号/幅值与相位最小二乘恢复Key words
sensor signal processing/electro-magnetic coupling/saturated sinusoidal signal/amplitude and phase LSM recovery分类
信息技术与安全科学引用本文复制引用
胡超,冯忠晴,张智焕,屈稳太..一种从饱和正弦信号中恢复原信号幅值与相位的方法[J].传感技术学报,2013,(6):871-877,7.基金项目
国家自然科学基金项目(61273332) （61273332）
