CN104579500A - Underwater communication system - Google Patents
Underwater communication system Download PDFInfo
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- CN104579500A CN104579500A CN201310526397.3A CN201310526397A CN104579500A CN 104579500 A CN104579500 A CN 104579500A CN 201310526397 A CN201310526397 A CN 201310526397A CN 104579500 A CN104579500 A CN 104579500A
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Abstract
The invention discloses an underwater communication system which comprises a signal transmitting unit and a signal receiving unit, wherein a signal receiving module of the signal transmitting unit is used for receiving an information source signal and used for transmitting the information source signal to a signal encoding encryption module for encoding encryption; after being demodulated by a signal modulating module, the encrypted signal is compiled by a laser signal transmitting module and is transmitted out through a transmitting antenna; after being received by a receiving antenna of the signal receiving unit, the encrypted laser signal is converted into an electric signal through a photovoltaic conversion module and is subsequently transmitted to the signal demodulating module for signal demodulation; the demodulated signal is decoded by a signal decoding module, and the information of the signal is read. By adopting the underwater communication system, the signal is prevented from loss to cause secret leakage and can be transmitted at fixed points according to a preset signal channel selected by a user, thus being high in purposiveness; considering the problems of uncertainty of an underwater environment, frequency skipping and decoding faults of signals, and the like, the electric signal obtained through photovoltaic conversion can be subjected to balance noise reduction processing, and thus the decoding fault rate of the signal is reduced.
Description
Technical field
The invention belongs to subsurface communication technical field, relate to a kind of underwater communications system specifically.
Background technology
Along with the continuous innovation development of the communication technology, while the continuous renewal replacement of communicating landline device, equipment, for can the time underwater data transmission subsurface communication technique device have also been obtained significant progress, subsurface communication technology has become the mankind and has been engaged in Activities of Ocean, and even between land-land, data communication exchanges an indispensable part.
Now conventional underwater communications system has the feature such as long transmission distance, dependable performance, mainly comprise: underwater acoustic communication system, undersea optical communications system, utilize electromagnetic radio-frequency to realize the communication system of exchanges data, but all there is certain defect in above-mentioned communication system: although underwater acoustic communication system technology maturation, of many uses, but this type systematic is subject to the impact of wave and offshore installations noise, and the propagation rate of sound in water is not high; Undersea optical communications system is then subject to absorption, the heat dissipation characteristics impact of water, and interference free performance is poor; Utilize electromagnetic radio-frequency to realize the decay of communication system due to electromagnetic radio-frequency of exchanges data, its transmission range is restricted.
Summary of the invention
In view of the defect that prior art exists, the object of the invention is to provide a kind of underwater communications system based on laser communication, this system has long transmission distance, transmission rate is high and can realize the advantages such as point-to-point communication.
To achieve these goals, technical scheme of the present invention:
A kind of underwater communications system, comprise signal transmitter unit and signal receiving unit, it is characterized in that: described signal transmitter unit is made up of signal receiving module, Signal coding encrypting module, signal madulation module, laser signal transmitter module and transmitting antenna, this signal is delivered to Signal coding encrypting module and is carried out coding encrypting by described signal receiving module reception source signal, after signal after encryption is modulated by signal madulation module, by being gone out by transmission antennas transmit after the compiling of laser signal transmitter module; Described signal receiving unit is made up of reception antenna, photoelectric conversion module, signal receiving module, signal decoding module, after described reception antenna receives the laser signal of encryption, deliver to signal receiving module after converting the signal of telecommunication to by photoelectric conversion module and carry out signal receiving, the signal after demodulation reads signal message after being decoded by signal decoding module decrypts.
Described signal transmitter unit also comprises channel selection block, and for receiving the laser signal of described laser signal transmitter module compiling, the preset signals channel selected according to user, is gone out by transmission antennas transmit.
Described signal receiving unit also comprises signal equalization noise reduction module, carries out balanced noise reduction process for the signal of telecommunication changed for photoelectric conversion module.
Beneficial effect of the present invention:
The present invention is encrypted source signal by encryption technology, and the loss of effective anti-stop signal is divulged a secret; The preset signals channel fixed point that channel selection block can be selected according to user is simultaneously launched, and purpose is strong; In view of the uncertainty of underwater environment and the problem such as frequency hopping, decoding error of signal, in the balanced noise reduction module of signal receiving unit signalization, balanced noise reduction process is carried out to the signal of telecommunication of opto-electronic conversion, reduces the decoding error rate of signal.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of a kind of underwater communications system of the present invention;
Fig. 2 is the structural schematic block diagram of a kind of underwater communications system of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
Underwater communications system as shown in Figure 1, comprise signal transmitter unit and signal receiving unit, it is characterized in that: described signal transmitter unit is made up of signal receiving module, Signal coding encrypting module, signal madulation module, laser signal transmitter module and transmitting antenna, this signal is delivered to Signal coding encrypting module and is carried out coding encrypting by described signal receiving module reception source signal, after signal after encryption is modulated by signal madulation module, by being gone out by transmission antennas transmit after the compiling of laser signal transmitter module; Described signal receiving unit is made up of reception antenna, photoelectric conversion module, signal receiving module, signal decoding module, after described reception antenna receives the laser signal of encryption, deliver to signal receiving module after converting the signal of telecommunication to by photoelectric conversion module and carry out signal receiving, the signal after demodulation reads signal message after being decoded by signal decoding module decrypts.
In view of the transmit demand of channel of user is different, at described signal transmitter unit, channel selection block is set, for receiving the laser signal of described laser signal transmitter module compiling, the preset signals channel selected according to user, is gone out by transmission antennas transmit.
In view of the complexity of communication environment and the various situation of influencing factor, the problem of dtmf distortion DTMF of decoding is exported in order to reduce signal, in the balanced noise reduction module of described signal receiving unit signalization, the signal of telecommunication for changing for photoelectric conversion module carries out balanced noise reduction process, improves Signal transmissions reliability.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a underwater communications system, comprise signal transmitter unit and signal receiving unit, it is characterized in that: described signal transmitter unit is made up of signal receiving module, Signal coding encrypting module, signal madulation module, laser signal transmitter module and transmitting antenna, this signal is delivered to Signal coding encrypting module and is carried out coding encrypting by described signal receiving module reception source signal, after signal after encryption is modulated by signal madulation module, by being gone out by transmission antennas transmit after the compiling of laser signal transmitter module; Described signal receiving unit is made up of reception antenna, photoelectric conversion module, signal receiving module, signal decoding module, after described reception antenna receives the laser signal of encryption, deliver to signal receiving module after converting the signal of telecommunication to by photoelectric conversion module and carry out signal receiving, the signal after demodulation reads signal message after being decoded by signal decoding module decrypts.
2. underwater communications system according to claim 1, it is characterized in that: described signal transmitter unit also comprises channel selection block, for receiving the laser signal of described laser signal transmitter module compiling, the preset signals channel selected according to user, is gone out by transmission antennas transmit.
3. underwater communications system according to claim 1, is characterized in that: described signal receiving unit also comprises signal equalization noise reduction module, carries out balanced noise reduction process for the signal of telecommunication changed for photoelectric conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526397.3A CN104579500A (en) | 2013-10-29 | 2013-10-29 | Underwater communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526397.3A CN104579500A (en) | 2013-10-29 | 2013-10-29 | Underwater communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104579500A true CN104579500A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310526397.3A Pending CN104579500A (en) | 2013-10-29 | 2013-10-29 | Underwater communication system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104579500A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847894A (en) * | 2018-08-03 | 2018-11-20 | 郑州飞铄电子科技有限公司 | A kind of laser communication device |
| CN111711493A (en) * | 2020-06-16 | 2020-09-25 | 中国电子科技集团公司第三研究所 | Underwater communication equipment with encryption and decryption capabilities, transmitter and receiver |
-
2013
- 2013-10-29 CN CN201310526397.3A patent/CN104579500A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847894A (en) * | 2018-08-03 | 2018-11-20 | 郑州飞铄电子科技有限公司 | A kind of laser communication device |
| CN111711493A (en) * | 2020-06-16 | 2020-09-25 | 中国电子科技集团公司第三研究所 | Underwater communication equipment with encryption and decryption capabilities, transmitter and receiver |
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Application publication date: 20150429 |