'METHOD OF OPTICAL TELEDETECTION OF COMPOUNDS IN A MEDIUM'

摘要

The invention relates to a method of optical teledetection of compounds in a medium in which: - a detection measurement is carried out by emitting into the medium, short pulses of light at least 3 nm wide, and detecting a part of the light back-scattered by the medium by means of a detection unit with temporal resolution, - a reference measurement in which the light emitted or the light back-scattered is filtered by virtue of addressable filtering means, simulating the optical spectrum of the light at the working wavelengths of at least one given compound to be searched for, - a comparison of a detection measurement and of a reference measurement, so as to deduce therefrom the possible presence of the compound or compound(s) searched for in the medium, - the addressable filtering means are modified dynamically, and a series of reference measurements and a series of corresponding comparisons are performed for a series of various compounds liable to be present in the medium, as well as a device adapted for implementing such a method. (Figure to be published: none)