Patent ID: 7149513

Claim:
Process for analysing the ambient electromagnetic field in which, to determine the field level of one or more cellular telecommunication networks, the process comprising the steps according to which: with the aid of detection means ( 4 ), the intensity of the electromagnetic field is measured over time for several frequencies of a frequency range which is sampled, a processing unit ( 1 ) determines for each frequency, from the measurements thus performed, at least one characteristic parameter of the electromagnetic field, the processing unit ( 1 ) determines from the values of this characteristic parameter, the frequencies which correspond to the signals of beacon pathways of at least one base station, by applying a selection criterion based on statistical properties of the field radiated on the beacon pathways; and wherein one of the characteristic parameters determined is chosen from the following parameters: the mean intensity of the electromagnetic field, the standard deviation of the variation in the intensity of the electromagnetic field, the period of variation of the electromagnetic field, the minimum intensity of the electromagnetic field, the half-sum of quartiles 1 and 3 of the intensity of the electromagnetic field, the difference between quartile 2 and the discrepancy between quartiles 1 and 3 of the intensity of the electromagnetic field.