REMOTE LASER METHOD OF DETECTION OF OIL FILM ON WATER SURFACE Russian patent published in 1999 - IPC

FIELD: measurement technology. SUBSTANCE: invention can be employed for proximate test of spreads of oil and oil products in seas and internal water basins. Remote laser method of detection of oil film on water surface includes sounding of examined water surface by pulse optical beam, recording of energy and duration of echo pulse reflected from water surface and comparison of energy and duration of echo pulse reflected from examined and clean water surfaces. Presence of oil film on water surface is evaluated by simultaneous realization of two relations: W>W₀, τ < τ₀, where W, W₀ and τ,τ₀ are correspondingly energy and duration of echo pulse recorded by detector from examined and clean water surfaces. EFFECT: increased authenticity of detection. 1 dwg