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A carrier frequency adaptive underwater communication method and device thereof

A carrier frequency and underwater communication technology, applied in the direction of electrical components, transmission systems, etc., to achieve the effect of strong anti-interference ability, stable performance, and fast frequency conversion speed

Active Publication Date: 2017-10-13
CHANGZHOU INST OF MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the traditional frequency shift keying communication method used in underwater acoustic communication, the carrier frequency is fixed, which has caused great limitations in adapting to complex and changeable underwater acoustic channels in different ocean environments

Method used

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  • A carrier frequency adaptive underwater communication method and device thereof
  • A carrier frequency adaptive underwater communication method and device thereof
  • A carrier frequency adaptive underwater communication method and device thereof

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Embodiment Construction

[0022] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0023] Such as figure 1 The block diagram of the communication between the underwater communication terminal and the land communication device shown;

[0024] Generally speaking, the underwater mobile communication terminal is a measuring or detecting device, which is used to measure or monitor underwater information, such as temperature, pressure, sound, etc. As the relay point of underwater communication and water communication, the relay platform can be fixed, such as a fixed device on the shore; it can also be mobile, such as some relay platforms are located on a moving mother ship. The underwater mobile communication ...

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Abstract

The present invention relates to a carrier frequency self-adaptive underwater communication method and its device, using an underwater mobile communication terminal to communicate with a relay platform through an underwater acoustic channel; the data obtained by the relay platform communicates with land through a wired channel or a wireless channel The device communicates and sends the collected information to the land communication device for storage and analysis. The invention makes the carrier frequency value configurable and can be adjusted according to the specific conditions of the channel to adapt to the characteristics of the channel; and the invention has stable performance, high precision, fast frequency conversion speed, continuous phase output when the frequency changes, and strong anti-interference ability.

Description

technical field [0001] The invention relates to the field of underwater acoustic communication, in particular to a carrier frequency self-adaptive underwater communication method and device thereof. Background technique [0002] The actual underwater acoustic channel is very complex, and it has two interfaces, the water surface and the bottom. Due to the influence of temperature, salinity and static pressure, the speed of sound is different at different depths in water, and there is a vertical distribution of sound speed, which will cause the refraction of sound waves. The reflection of the upper and lower boundaries and the refraction in water make the actual underwater acoustic channel not a single-path channel but a multi-path channel. In order to reduce the impact of multipath interference, non-coherent detection methods are usually used. The frequency shift keying communication method can be realized by non-coherent detection method. Therefore, frequency shift keying...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B13/02
Inventor 陶国正乔宏哲刘翠梅
Owner CHANGZHOU INST OF MECHATRONIC TECH