A multi-sector multi-beam echo intensity processing method and processing terminal

Abstract

The present invention relates to a multi-sector multi-beam echo intensity processing method and a processing terminal. The method includes the following steps: Step 1: Obtain echo intensity data, and use an angle-intensity sequence to characterize the multi-sector beam pattern according to the data , the beam emission angle is calculated using the corresponding formula; Step 2: Select the modeling data according to the preset conditions; Step 3: Establish a multi-sector echo intensity normalization model based on the substrate, including the sequential sector intensity curve statistics, Backscattering intensity curve fitting and beam mode correction value calculation; Step 4: Use the corresponding formula to perform beam mode correction on all beam points of all survey lines. The present invention carries out echo intensity processing and correction at the intersection positions of a plurality of multi-beam strips, and the effect of the multi-beam echo intensity is obviously improved, and the quality of the multi-beam echo intensity and the reflection to seabed topography are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of seismic echo intensity processing, in particular to a multi-sector multi-beam echo intensity processing method and a processing terminal. Background technique [0002] The impact of sound waves on different seabed substrates will produce different echo emphasis, based on which the correlation between the echo emphasis and the substrate can be established, so that the substrate can be classified acoustically and a seabed landform image can be constructed. Due to the acoustic beam mode, the echo intensity in the same Ping sector is unbalanced. Therefore, it is necessary to study and improve the normalization of the echo intensity of the Ping sector. [0003] Existing echo intensity processing is mainly aimed at single-sector multi-beam echo intensity. Since the influence of different sector beam patterns and frequency differences during multi-beam multi-sector measurement is not considered, the multi-sector...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a multi-sector multi-beam echo intensity processing method, which can solve the problem of considering multi-sector multi-echo intensity processing under the beam mode;

[0005] The second purpose of the present invention is to provide a processing terminal, which can solve the problem of multi-sector multi-echo intensity processing considering the beam mode

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