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1. 发明授权

US06389365B1 Method for operating a spectrum analyzer to display a marker of a signal of interest 有权
标题翻译：用于操作频谱分析仪以显示感兴趣信号的标记的方法
公开(公告)号：US06389365B1
公开(公告)日：2002-05-14
申请号：US09383065
申请日：1999-08-25
申请人： Corydon J. Boyan , Tosya Shore , David Del Castillo
发明人： Corydon J. Boyan , Tosya Shore , David Del Castillo
IPC分类号： G01R2316
CPC分类号： G01R23/18
摘要： A method for operating a spectrum analyzer to provide a marker that follows a peak from sweep to sweep in a spectrum display. The method operates on first and second measured spectrums. The first measured spectrum includes a plot of the signal amplitude against frequency during a first time interval in which the marker has been assigned to a peak at a first frequency and first amplitude. The present invention assigns the marker to a peak in the second spectrum measured during a subsequent time interval in which the marker is to be assigned. Initially, a first frequency range is defined in the second measured spectrum centered on the first frequency. The first frequency range is searched for candidate peaks having amplitudes within a first range centered on the first amplitude. If more than one such candidate peak is found by the search, the marker is assigned to the candidate peak closest to the first frequency. If a candidate peak is not found, a second frequency range is defined centered on the first frequency, and the process is repeated with a different amplitude range. If more than one such candidate peak is found by the search, the marker is assigned to the candidate peak farthest from the first frequency. If no candidate peak is found, a third frequency range in the second measured spectrum is defined and this frequency range is searched for all candidate peaks regardless of amplitude. The marker is assigned to one of the candidate peaks based on a weighted sum of the differences in amplitude and frequency of the candidate peaks and the first amplitude and frequency.
摘要翻译：一种用于操作频谱分析仪以提供在频谱显示中从扫描到扫描之后的峰值的标记的方法。该方法在第一和第二测量光谱上操作。第一测量频谱包括在第一时间间隔期间信号幅度与频率的曲线图，其中标记已经被分配到在第一频率处的峰值和第一幅度。本发明将标记分配给在标记被分配的后续时间间隔期间测量的第二频谱中的峰值。首先，以第一频率为中心的第二测量频谱中定义第一频率范围。搜索第一频率范围，该候选峰的幅度在第一幅度为中心的第一范围内。如果通过搜索找到多于一个这样的候选峰，则将标记分配给最接近第一频率的候选峰。如果未找到候选峰，则以第一频率为中心定义第二频率范围，并以不同的幅度范围重复该过程。如果通过搜索找到多于一个这样的候选峰值，则将标记分配给距离第一频率最远的候选峰。如果没有找到候选峰，则定义第二测量光谱中的第三频率范围，并且无论幅度如何，都搜索所有候选峰的该频率范围。基于候选峰值的振幅和频率的差异与第一幅度和频率的加权和，将标记分配给候选峰之一。

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