METHOD FOR PROFILING OF BOTTOM DEPOSITS Russian patent published in 2010 - IPC G01V1/38 

FIELD: mining.

SUBSTANCE: method for profiling of bottom deposits includes installation of receiving-radiating antenna of profile recorder onto towed device and it's towing above bottom, radiation of pulse acoustic phase-manipulated signal modulated with M-sequence, reception of reflected signal, its correlation processing with copy of radiated acoustic phase-manipulated signal. At the same time antenna of profile recorder is towed above bottom so that its height h over bottom and suggested depth of profiling H are linked with the ratio h=H/c₁₂, where: C₁₂=c₁/c₂, C₁, C₂ - speed of sound in water and in sedimentary layer of sea bottom accordingly, and full width of profile recorder antenna directional characteristic in vertical plane at the level of 3 dB equals double critical angle θ_0.7-2θ_kp, θ_Kp=arcsin(c₁₂). Then graphic building of bottom deposits profile is carried out by time of reflected signal delay.

EFFECT: increased depth of bottom deposits profiling with preservation of high resolution.

3 dwg