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Deep sea remote water sound communication method

An underwater acoustic communication and deep-sea technology, which is applied in the field of communication to achieve the effects of robust long-distance communication, increased aggregation gain, and increased communication rate

Inactive Publication Date: 2008-04-23
HARBIN ENG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, the study of deep-sea channel characteristics has not yet been regarded as an important research link for the realization of deep-sea long-distance underwater acoustic communication.

Method used

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  • Deep sea remote water sound communication method
  • Deep sea remote water sound communication method
  • Deep sea remote water sound communication method

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Embodiment Construction

[0024] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0025] 1. M-ary spread spectrum pattern delay difference coding communication

[0026] M-element spread spectrum communication is multi-ary spread spectrum communication. Multiple information bits are transmitted with one spread spectrum code. Compared with traditional spread spectrum communication, it improves the transmission rate and is suitable for underwater acoustic environments with strict bandwidth restrictions. Strong anti-interference ability.

[0027] In this communication method, the M-element spread spectrum communication is combined with the Pattern delay difference coding underwater acoustic communication system, which not only obtains the characteristics of spread spectrum communication that can be used for long-distance communication, but also effectively improves the spread spectrum communication rate. The Pattern Time Delay Shift Coding (PDS) u...

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Abstract

This invention provides a blue water remote underwater communication method including: 1, combining frequency-expansion communication with a Pattern time delay difference coding underwater communication system and applying a work mode of M members, 2, applying a single array element PTRM channel balance technology at the receiving end, 3, analyzing character of blue-water tracks and pointing out that when a sound source is near a track shaft, regions along the shaft are gathered regions. Advantages: 1, communication rate is increased due to the frequency-expansion and the Pattern time delay difference coding method, 2, the single array element passive time reversing mirror can use multi-use expansion signals to suppress interference among codes and get gathered gain , 3, realizing stable remote communication by the character of blue-water communication.

Description

(1) Technical field [0001] The present invention relates to a communication technology, in particular to an underwater acoustic communication technology, more precisely, to a method for realizing deep-sea long-distance underwater acoustic communication. (2) Background technology [0002] Informatization development of deep sea resources and energy development is a century-old plan related to the sustainable development of our country. Exploitation and utilization of deep-water oil and gas resources as soon as possible is related to whether my country's increasingly serious shortage of oil resources can be effectively alleviated, and it is related to the security of national oil resources and economic security. The development of deep-sea oil and gas resources requires more complex technologies, requiring the coordinated operation of mother ships, underwater operating robots, and deep-sea fixed development base stations. Deep-sea long-range underwater acoustic communication ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B13/02H04B1/707H04L25/03H04B1/711
Inventor 殷敬伟惠俊英王逸林郭龙祥
Owner HARBIN ENG UNIV
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