Real-Time Signal Analysis Techniques in Wireless Measurements: Two Important Capabilities
Applikationsberichte
A real-time spectrum analyzer (RTSA) can find elusive signals and trigger on multiple elements of signal behavior, making it a powerful tool for solving known problems, discovering unknown problems, and optimizing RF designs. (Real-time analysis is defined here as measurements in which all signal samples are processed). Two key RTSA capabilities are (1) comprehensive spectrum displays such as density and spectrogram and (2) frequency-mask triggering using spectral results.
Visualizing Agile Signals and Complex Signal Environments
As signals become more agile and signal environments become more complex, it’s increasingly useful to represent a large amount of measurement data on a single screen, as pictured in Figure 1. These new displays take advantage of the high-speed digital signal processing in RTSAs that generate millions of spectra every second — significantly more than can be discerned individually by the human eye. In such cases, the most informative displays are created by compiling statistics and displaying how often a particular measurement value occurs (e.g., a specific amplitude at a specific frequency). The histogram in Figure 1 is a spectrum measurement enhanced to show frequency of occurrence.