Electromagnetic Spectrum Analysis

 

Radiofrequency Sweep or Scanning

https://en.wikipedia.org/wiki/Radio-frequency_sweep

 

"Radio frequency sweep or "Frequency sweep" or "RF sweep" refer to scanning a radio frequency band for detecting signals being transmitted there. This is implemented using a radio receiver having a tunable receiving frequency. As the frequency of the receiver is changed to scan (sweep) a desired frequency band, a display indicates the power of the signals received at each frequency."

 

 

Video demonstrating sweep of the FM band

https://www.youtube.com/watch?v=CSpcbLSbdbQ&feature=youtu.be&t=1m3s

 

 

 

Analyse du spectre électromagnétique 

 

Analyse par balayage (scanning) fréquentiel (pour exploration spectrale)

Il faut noter que la vitesse de balayage influence la résolution spectrale.

 

Analyseur de champ électromagnétique

https://fr.wikipedia.org/wiki/Analyseur_de_champ_%C3%A9lectromagn%C3%A9tique

Un analyseur de champ électromagnétique est un instrument de mesure regroupant deux capteurs :