The article demonstrates a super high frequency (SHF) radiometer that can be used for detecting seats of forest fires. The analysis of current approaches and methods for forest fire monitoring is briefly discussed. Comparing to common use of optical or infrared radiation detectors, measuring instruments working at microwave range are more efficient in conditions of insufficient visibility (dense smoke, thick tree crowns, meteorological environment). The paper shows the structure and technical characteristics of the designed radiometer. The results of laboratory and field testing are also presented.

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