Multi-beam wide covering sea floor relief and geomorphy surveying device

Abstract

The invention relates to multi-wave packet wide cover undersea topography landform detecting device. It includes above and under water extensions, cable. The above water extension is made up of embedding type integration industrial personal computer, signal processing, collecting, pre-processing, and adjusting devices, storage. The under water extension is made up of signal generating and emitting devices, multi channel emitting and receiving transducer arrays, signal amplifying device. The invention adopts multi channel emitting and receiving transducer array and advanced signal processing technique to gain wide cover undersea topography and landform information to increase marine charting efficiency and precision. Thus it can be widely used in water traffic transportation safety guard, laying submarine cable, and sinks salvaging etc.

Description

(1) Technical field [0001] The invention relates to the detection field, in particular to a multi-beam detection device for efficiently acquiring wide-coverage seabed topography and landform information. (2) Background technology [0002] With the development of modern science and technology, people have obtained relatively fine topography and landforms of the land parts of the earth where humans live through space telemetry technology, and based on this, they have guided people to transform nature and develop various land resources to serve the development of human society. However, our understanding of the topography of the seabed, which accounts for about 71% of the earth's surface area, and the underwater topography of a large number of rivers and lakes is far from what people expected. Topographic and geomorphic information requires the use of multi-beam detection equipment. [0003] Foreign countries have been developing underwater terrain detection equipment since th...

AI Technical Summary

Problems solved by technology

The appearance of this prototype, which was born in the 1950s, once brought great convenience to the development and utilization of oceans, rivers and lakes for human beings, but today, their defects have greatly restricted the increasingly frequent water accidents in our society. Activity

[0004] The working principle of the single-beam depth sounder is as follows: a single-beam ultrasonic wave is emitted directly below the surveying ship, and then the single-beam receives the scattered echo of the bottom of the water, and the depth of the water body is measured by measuring the time difference between the transmitted and received signals, but cannot give terrain information

In order to avoid the influence of measuring the pitch and roll of the ship, a relatively wide single beam (usually around ±10°) is required, which leads to low measurement accuracy; In order to get a more comprehensive understanding of the water body information, the distance between the two measuring lines must be greatly reduced by using a single beam to measure the water depth, which leads to a great waste of manpower and material resources

This extremely low measurement efficiency directly leads to the increase of measurement cost, and the obtained measurement results cannot achieve full coverage measurement

The limitations of these two aspects determine that the single-beam echo sounder is no longer suitable for the urgent needs of various water activities in the current society.

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