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Multi-beam sounding system based on chirp signal

A chirp signal, multi-beam technology, applied in radio wave measurement system, measurement device, sound wave re-radiation and other directions, can solve the problem of not being able to have both, to ensure work performance, high distance resolution, and solve the detection range. and the effect of resolution

Active Publication Date: 2017-06-09
江苏中海达海洋信息技术有限公司
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Problems solved by technology

Therefore, for a system that uses a single-frequency signal as a detection signal, the detection range and resolution are mutually restricted, and the two cannot have both

Method used

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  • Multi-beam sounding system based on chirp signal
  • Multi-beam sounding system based on chirp signal
  • Multi-beam sounding system based on chirp signal

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Embodiment Construction

[0025] The present invention and its effects will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as figure 1 As shown, the multi-beam sounding system based on chirp signals consists of a transmitting wet end, a receiving wet end, a signal processor and a display and control computer. The transmitting wet end is composed of a transmitting transducer and a transmitting electronic cabin. The transmitting circuit in the transmitting electronic cabin is formed, which is converted into an acoustic signal by the transmitting transducer and propagated in the water; the receiving wet end is composed of the receiving transducer and the receiving electronic cabin, and the receiving transducer receives the acoustic signal and converts it into a digital signal. The signal is processed by the receiving circuit in the receiving electronic cabin; the receiving wet end is connected to the signal processor on the water through the connect...

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Abstract

The invention discloses a multi-beam sounding system based on a chirp signal. The multi-beam sounding system based on a chirp signal includes an emission wet end, a reception wet end, a signal processor and a display control computer, wherein the emission wet end emits a chirp signal as a detection signal of the system; the detection signal is received by the reception wet end, and is uploaded to the signal processor after accepting signal pre-processing; the signal processor further processes the data after pre-processing by combination of the data of an auxiliary sensor, and extracts the seabed depth and the orientation information and sends the seabed depth and the orientation information to the display control computer; and the display control computer is used for controlling emission and reception of system signals, and completing processing and display of images and storage of data. The multi-beam sounding system based on a chirp signal utilizes a chirp signal as a multi-beam seabed detection signal, thus guaranteeing higher object measuring resolution while satisfying the demand of the operating range of multi-beam sonar detection, can resolve the contradiction between the operating range of a traditional single frequency signal multi-beam system and the object resolution, and can effectively improve the working performance of the multi-beam system.

Description

technical field [0001] The invention belongs to the technical field of marine exploration, and relates to a multi-beam sounding instrument, in particular to a multi-beam sounding system based on linear frequency modulation signals. Background technique [0002] The multi-beam echo sounder is an instrument for measuring the topography of the seabed. It mainly emits sound waves through the transmitting transducer. After the sound waves reach the seabed, they are backscattered and received by the receiving transducer array. Formation and bottom detection processing to complete the measurement of seabed topography. The traditional single-beam bathymetry system can only obtain one seabed depth value vertically below the survey ship for each measurement. Compared with it, multi-beam sounding can obtain the seabed depth values ​​of multiple measurement points in a strip coverage area, which realizes The leap from "point-line" measurement to "line-surface" measurement has greatly i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/34G01S15/88
CPCG01S15/34G01S15/88
Inventor 刘冲罗宇邬松
Owner 江苏中海达海洋信息技术有限公司
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