A process for the recovery of the bottom relevant parameters in the case of the sediment localization with parametric acoustic sound sources

摘要

A process for the recovery of the bottom relevant parameters in the case of the sediment localization with parametric (non-linear) acoustic sound sources and evaluation of the pulses at the base and at the back scattered and reflected signals, characterised in that, simultaneously with in each case a vertically (1) and a bevel (5) directed against heavy seas movements electronically stabilized, strongly focused parametric sound source pulses with one or more frequencies are transmitted, that the receiving transducer (4) for the vertical sound waves at the site of the vertical transmitter (1) and the receiving transducer (8) of the oblique sound waves (7) at the location of maximum receive probability for the reflected sound waves is located, with the vertical in that from the ultrasound beam measured water - and sediment layers low and the distance between the transmitter (5) and receiver (8) of the optimum radiation angle α of the oblique, corresponding to electronically pivotable transmitter - acoustic lobe (6) is calculated, that from the over a plurality of transmitting periods averaged transit times of the individual sound waves of the bottom - and layer limits echoes t_Sbs, T_B2b, T₂₃₂, T₃₄₃, T_{Circuit sbe}, T_S2e, T_S3e, T_S4e, , etc, of the two transmitters..