REMOTE SUBSTANCE DETECTION METHOD Russian patent published in 2008 - IPC G01R33/20 G01N24/08 G01V3/14 

FIELD: physics; measurements.

SUBSTANCE: present invention pertains to physical measurements, which use magnetic resonance for searching for and detecting mainly narcotic drugs and explosive substances. A generated ultrabroadband signal is used to irradiate the presumed place where the narcotic drugs are hidden. The reflected signal is received, and gradually stored. The antenna assembly is moved parallel the investigated surface at a fixed distance. At each observation point, at least two successive measurements of the reflected pulses are taken. The pulse, corresponding to the previous measurement, is held until it is compared with the next pulse. Their difference is determined, and the differential signal is integrated. The differential signal is divided by the integrated differential signal. The normal signal is compared to the threshold value of the signal. A narcotic substance is present if the threshold value is exceeded.

EFFECT: wider functional capabilities of the method by way of searching for and detecting narcotic drugs, packed in non-metallic covers and inside concealment environments.

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