专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5565764A Digital processing method for parameter estimation of synchronous, asynchronous, coherent or non-coherent signals 失效
标题翻译：用于同步，异步，相干或非相干信号参数估计的数字处理方法
公开(公告)号：US5565764A
公开(公告)日：1996-10-15
申请号：US435685
申请日：1995-05-05
申请人： Leslie A. Priebe , Michael C. Stephens , William D. Daniels
发明人： Leslie A. Priebe , Michael C. Stephens , William D. Daniels
IPC分类号： G01R23/16 , G01S7/02
CPC分类号： G01R23/16 , G01S7/021
摘要： The parameters of a digital signal are extracted by the application of autocorrelation and crosscorrelation techniques to effectively measure the frequency and time behavior of a digital signal. The method employs digital autocorrelation and crosscorrelation to determine these parameters. Autocorrelation allows the measurement of signal frequency by measurement of instantaneous signal phase. Crosscorrelation allows measurement of relative phase between two or more signals in two or more channels by measurement of instantaneous phase and by referencing the instantaneous phase to the autocorrelation function. The autocorrelation function and crosscorrelation function preserve relative amplitude and phase. Measurement of relative amplitude and phase allows direction finding calculation for any current class of system that uses amplitude and/or phase to derive angle or arrival. Signal time and frequency measurement at the output of a correlation receiver result in robust characterization of the parameters of the signal. Digital calculations are superior to current analog or hybrid analog and digital methods because errors due to component aging, drift and temperature effects are easily prevented.
摘要翻译：通过应用自相关和互相关技术提取数字信号的参数，以有效测量数字信号的频率和时间行为。该方法采用数字自相关和互相关来确定这些参数。自相关允许通过测量瞬时信号相位来测量信号频率。互相关允许通过测量瞬时相位并通过参考与自相关函数的瞬时相位来测量两个或更多个通道中的两个或更多个信号之间的相对相位。自相关函数和相关函数保存相对幅度和相位。相对幅度和相位的测量允许使用振幅和/或相位导出角度或到达的任何当前类别的系统的方向测量计算。在相关接收机的输出端的信号时间和频率测量结果可以显着地描述信号的参数。数字计算优于当前的模拟或混合模拟和数字方法，因为易于防止由于组件老化，漂移和温度影响引起的错误。

IPRDB

热门服务

关于我们

友情链接

联系方式