CN106961639A - A kind of underwater communications system of interphone communication method under water and application this method - Google Patents
A kind of underwater communications system of interphone communication method under water and application this method Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000005236 sound signal Effects 0.000 claims description 38
- 238000012545 processing Methods 0.000 claims description 29
- 238000009432 framing Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 21
- 230000004807 localization Effects 0.000 claims description 16
- 230000006837 decompression Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
- H04Q5/245—Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
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Abstract
The invention discloses a kind of interphone communication method under water and the underwater communications system of application this method, it realizes the underwater operations such as mutual distance measurement between frogman under water between communication, underwater hiding-machine between communication, multiple nodes by the switching of the real-time estimating system messaging parameter of self adaptation and mode of operation.The present invention possesses adaptive ability to underwater acoustic channel, and can neatly carry out parameter configuration, pattern switching, distance selection, compression bit rate switching；Decoded reduction sound effect is clear, and tone color is natural.And the communication system of the present invention is easy to the system integration, it is easy to the advantages of transplanting then more for miniaturization, modularization.
Description
Technical field
The present invention relates to a kind of interphone communication method and system under water, more particularly to digital handset voice communication,
Ranging（Positioning）, by the switching of the real-time estimating system messaging parameter of self adaptation and mode of operation, realize and lead between frogman under water
The underwater operations such as the mutual distance measurement between letter, underwater hiding-machine between communication, multiple nodes.
Background technology
In recent years, as human development utilizes the quickening of marine resources paces, underwater voice communication system and method is ground
Study carefully and be increasingly valued by people, application field is numerous.For example：Communication, subsurface communication section between frogman's communication, underwater hiding-machine
The underwater operations such as the positioning between point.But the communication technology applied to land can not be entirely applied to subsurface communication neck
Domain, this has the characteristics such as limited communication bandwidth and its time-varying, space-variant mainly due to underwater acoustic channel, it is therefore desirable to using a kind of
Voice communication is carried out suitable for the communication mode of underwater acoustic channel.Orthogonal frequency division multiplexi is a kind of multi-carrier modulation technology, by
There is the weak performance of good anti-multipath and availability of frequency spectrum height in it and ground as one in wireless communication field in recent years
Study carefully focus.The characteristics of its is maximum is that transmission rate is high, to intersymbol interference and channel selectivity decline with very strong resistivity,
Research emphasis as field of underwater acoustic communication in recent years, but it is used for subsurface communication and is then still within the starting stage at present.
With the extensive use developed rapidly with large scale integrated circuit technology of Digital Signal Processing, data signal
Processor increasingly favored with its efficient computing capability and flexible programming mode by developer, and voice communication is also progressively
The high-speed digital communication epoch using digital signal processor as core are entered, digital vaccum tube voltmeter has then been embodied just
In encrypting, the superior function of digitized processing such as minimize, be easily integrated.
The present invention is exactly as background, with AMBE-3000（Phonetic codec chip）Chip and TMS320C6455
（Signal processor）Chip for body design voice communication system and on this basis with the modulation of orthogonal frequency division multiplexi
Mode realizes that speech real time communication and polynary frequency shift keying realize the positioning of submarine target node.
The content of the invention
An object of the present invention is to provide a kind of underwater voice communication method and localization method, and digital speech can be achieved
Modulation /demodulation and positioning.The present invention also aims to provide a kind of application this method and the more stable portable underwater of communication
Digital handset communication system, can complete power management, voice collecting, encoding and decoding speech, Voice command, underwater sound signal transmitting,
The functions such as underwater sound signal reception, speech play.
A kind of digital underwater interphone communication method proposed by the present invention, including：Voice communication method and localization method, its
It is characterised by：
（One）The transmitting terminal of described voice communication method includes the steps：
1）Firstly generate audio digital signals；
2）To above-mentioned steps 1）The audio digital signals of generation are encrypted；
3）To through above-mentioned steps 2）Audio digital signals after encryption carry out coded treatment；
4）To through above-mentioned steps 3）Audio digital signals data after coded treatment are interleaved processing；
5）To through above-mentioned steps 4）Data after intertexture carry out phase-modulation；
6）To through above-mentioned steps 5）Data after phase-modulation carry out pilot frequency sequence addition processing；
7）To through above-mentioned steps 6）Data after pilot frequency sequence addition processing carry out signal modulation and add synchronous head；
8）Will be through above-mentioned steps 7）Data after modulation are launched, and are transmitted in underwater acoustic channel；
（Two）The receiving terminal of described voice communication method comprises the following steps：
1）Receive the underwater sound signal in the underwater acoustic channel；
2）To above-mentioned steps 1）The underwater sound signal received carries out time synchronizing；
3）To through above-mentioned steps 2）Underwater sound signal output result after processing carries out signal demodulation process；
4）To through above-mentioned steps 3）The demodulation output data of processing carries out channel equalization；
5）To through above-mentioned steps 4）Data after channel equalization carry out phase demodulating processing；
6）To through above-mentioned steps 5）Data after phase demodulating are deinterleaved processing；
7）To through above-mentioned steps 6）Data after deinterleaving carry out decoding process；
8）To through above-mentioned steps 7）Processing is decrypted in decoded data, and carries out data convert；
（Three）The transmitting terminal of described localization method comprises the following steps：
1）Signal instruction is generated；
2）To above-mentioned steps 1）The data of middle signal instruction generation are encoded；
3）To through above-mentioned steps 2）Data after coding carry out M member quadrature carrier modulations；
4）Will be through above-mentioned steps 3）Data after modulation are timed synchronization process and launched, and are passed in described underwater acoustic channel
It is defeated；
（Four）The receiving terminal of described localization method comprises the following steps：
1）Underwater sound signal in underwater acoustic channel is captured, signal extraction is then synchronized；
2）To through above-mentioned steps 1）Data after synchronization are demodulated；
3）To through above-mentioned steps 2）Data after demodulation carry out decoding process；
4）To through above-mentioned steps 3）Data after decoding process carry out signal instruction recovery.
The spy of application this method that the present invention is provided and the more stable portable underwater digital handset communication system of communication
Levy and be：The system includes：
Signal acquisition/playing module, including transmitter, codec and loudspeaker, for realizing the language to the transmitter
Sound input signal is carried out being quantized into audio digital signals, or the speech data after being decompressed by the codec is gone back
Original is played or the location information destination node is acquired and reduced broadcasting；
Coding/decoding module, for realizing to the audio digital signals or framing signal after described quantization（Between destination node
Location information）Compression and decompressing function；
Control module, for realizing to the signal after coding/decoding module compression or decompression（Including audio digital signals
Or framing signal）Control, the power supply of programmable logic device and data interaction and the control of sensor etc., running parameter
（Including electricity, volume, distance, pattern）Control；
Modulation /demodulation control module, including programmable logic device, signal processor, compress for realizing to the coding/decoding module
Or the signal after decompression（Including audio digital signals or framing signal）Modulation or demodulation；
Analog front-end module, including transmitter unit and receiving unit, the receiving unit include preamplifier, signal conditioning circuit
And analog-digital converter, the input of signal, amplification and collection are received to complete transducer end；The transmitter unit includes digital-to-analogue conversion
Device, audio frequency power amplifier, transformer, matching inductance and transducer, to complete the tune after being modulated through the modulation /demodulation control module
The electricity of signal processed and the conversion of acoustical signal.
Data memory module, including programmable logic device and storage card, complete to gather the signal acquisition/playing module
The initial data arrived（The collection signal of transmission signal and transmitter input including transmitting terminal）Storage；
Power management module, including to high pressure and the two-part power management of low pressure, the high voltage power supply can be supplied directly to emitter
Electricity, the low-tension supply is mainly used in providing power supply to the simulation of the system, numerical portion.
Further, above-mentioned portable underwater digital handset communication system also includes：
Sensor：The sensor includes temperature sensor/humidity sensor/EGC sensor etc., is mainly used to monitor the system
Humiture state and Heart Rate States etc..
Memory：Mainly to store data etc. in the middle of the data processing in the signal processor.
Flash memory：Mainly to solidify the programming program code in the signal processor, the off line of signal processor is realized
Self-starting function.
Interphone communication system can realize voice signal respectively and fixed to the portable digital that the invention described above is provided under water
Position signal sends and receives function, and its course of work is as follows：
（One）Voice communication course
Transmitting terminal：Signal acquisition/playing module collects analog voice signal at transmitter first, then by the analog voice
Signal quantization gives the control into audio digital signals, and by the audio digital signals after coding/decoding module is compressed
Molding block, the control module again gives the audio digital signals after compressing compiling in described modulation /demodulation control module
The audio digital signals are then given the signal transacting in modulation /demodulation control module by journey logic device, the programmable logic device
Device, the signal processor is received after the audio digital signals, and the audio digital signals are encrypted first, then again should
Audio digital signals after encryption are modulated into underwater sound signal, and underwater sound signal of the modulation after complete is transmitted into described may be programmed again
Logic device, the programmable logic device is launched the transmitter unit that the underwater sound signal gives the AFE(analog front end).
Receiving terminal：Underwater sound signal is given in the modulation /demodulation control module by the receiving unit of the AFE(analog front end)
Programmable logic device, is given the underwater sound signal by the programmable logic device signal transacting in the modulation /demodulation control module
Device, generates audio digital signals after being demodulated by the signal processor to the underwater sound signal, and by the digital language after demodulating
Message number is decrypted, and the audio digital signals after the decryption give the programmable logic device, will by the programmable logic device
The audio digital signals give control module, and then the audio digital signals are given the coding/decoding module by the control module again
Decompressed, the audio digital signals after the decompression are delivered to the collection/playing module and reduced, then through raising one's voice
Device is played.
（Two）Positioning and communicating process
Transmitting terminal：The framing signal for the positioning that described control module produces the control module gives the modulatedemodulate regulation and control
Programmable logic device in molding block, is given the framing signal in the modulation /demodulation control module by the programmable logic device
Signal processor, after the framing signal is encrypted first for the signal processor, the framing signal after this is encrypted is modulated into
Underwater sound signal, and underwater sound signal of the modulation after complete is transmitted to the programmable logic device again, then should by the programmable logic device
The transmitter unit that underwater sound signal gives the analog front-end module is launched.
Receiving terminal：Underwater sound signal gives the programmable logic device by the receiving unit of the analog front-end module, so
The underwater sound signal is given the signal processor by the programmable logic device afterwards, then, and the signal processor is to the underwater sound signal
It is demodulated, then, the framing signal after demodulation is decrypted by the signal processor, the framing signal after decryption is given
The framing signal is given the single-chip microcomputer by the programmable logic device, then, the programmable logic device, and the single-chip microcomputer passes through school
The framing signal got is tested, the distance of submarine target node is then calculated.
The advantage of the portable digital that the present invention is provided interphone communication method under water is：Possess adaptive to underwater acoustic channel
Should be able to power, and can neatly carry out parameter configuration, pattern switching, distance selection, compression bit rate switching；Decoded reduction
Sound effect is clear, and tone color is natural.And the portable digital intercommunication under water for applying the digital underwater interphone communication method to design
Machine communication system then more for miniaturization, modularization, is easy to the system integration, it is easy to the advantages of transplanting.
Brief description of the drawings
Fig. 1 is voice communication method embodiment flow chart in underwater digit interphone communication method of the present invention；
Fig. 2 is localization method embodiment flow chart in underwater digit interphone communication method of the present invention；
Fig. 3 is portable underwater digital handset communications system embodiment structural schematic block diagram of the present invention；
Fig. 4 a, Fig. 4 b are modulation /demodulation processing software in portable underwater digital handset communications system embodiment of the present invention respectively
Design flow diagram, wherein, Fig. 4 a are the Software for Design flows of modulated terminal, and Fig. 4 b are the Software for Design flows of demodulating end.
Embodiment
To make the public further appreciate that the present invention technology, means and its advantage for being used, especially exemplified by embodiment and match somebody with somebody
Close accompanying drawing describe in detail it is as follows, it is believed that specifically understand when can be able to by it deep.
Digital underwater interphone communication and localization method that the present embodiment is provided, can be applied to the voice of underwater communications system
Communication and positioning, it includes voice communication method and localization method, and voice communication method and localization method each include dividing
Specific embodiment is described in detail to transmitting terminal and the method and step of receiving terminal in safety pin individually below：
It is the corresponding voice communication method reality of voice communication method in the present embodiment underwater digit interphone communication method shown in Fig. 1
Flow chart is applied, wherein：
The transmitting terminal of described voice communication method includes the steps：
1）Firstly generate audio digital signals；
2）To above-mentioned steps 1）The audio digital signals of generation are encrypted；
3）To through above-mentioned steps 2）Audio digital signals after encryption carry out coded treatment；
4）To through above-mentioned steps 3）Audio digital signals data after coded treatment are interleaved processing；
5）To through above-mentioned steps 4）Data after intertexture carry out phase-modulation；
6）To through above-mentioned steps 5）Data after phase-modulation carry out pilot frequency sequence addition processing；
7）To through above-mentioned steps 6）Data after pilot frequency sequence addition processing carry out signal modulation and add synchronous head；
8）Will be through above-mentioned steps 7）Data after modulation are launched, and are transmitted in underwater acoustic channel；
The receiving terminal of described voice communication method comprises the following steps：
1）Receive the underwater sound signal in the underwater acoustic channel；
2）To above-mentioned steps 1）The underwater sound signal received carries out time synchronizing；
3）To through above-mentioned steps 2）Underwater sound signal output result after processing carries out signal demodulation process；
4）To through above-mentioned steps 3）The data of the demodulation output of processing carry out channel equalization；
5）To through above-mentioned steps 4）Data after channel equalization carry out phase demodulating processing；
6）To through above-mentioned steps 5）Data after phase demodulating are deinterleaved processing；
8）To through above-mentioned steps 6）Data after deinterleaving carry out decoding process；
8）To through above-mentioned steps 7）Processing is decrypted in decoded data, and carries out data convert；
It is the corresponding localization method steps flow chart of localization method in the present embodiment underwater digit interphone communication method shown in Fig. 2
Figure, wherein：
The transmitting terminal of described localization method comprises the following steps：
1）Signal instruction is generated；
2）To above-mentioned steps 1）The data of middle signal instruction generation are encoded；
3）To through above-mentioned steps 2）Data after coding carry out M member quadrature carrier modulations；
4）Will be through above-mentioned steps 3）Data after modulation are timed synchronization process and launched by transducer, in underwater sound letter
Transmitted in road；
The receiving terminal of described localization method comprises the following steps：
1）Underwater sound signal in underwater acoustic channel is captured, signal extraction is then synchronized；
2）To through above-mentioned steps 1）Underwater sound signal data after synchronization are demodulated；
3）To through above-mentioned steps 2）Data after demodulation carry out decoding process；
4）To through above-mentioned steps 3）Data after decoding process carry out signal instruction recovery.
Fig. 3 is a kind of portable underwater digital intercom provided using above-mentioned digital underwater interphone communication and localization method
Machine communication system architecture block diagram, what the system can realize voice signal and framing signal respectively sends and receives function, such as Fig. 3
Shown, the portable underwater digital handset communication system mainly includes power management module, signal acquisition/playing module, volume
Decoder module, control module, modulation /demodulation module, analog front-end module and data memory module etc., wherein：
Power management module, including high pressure, low pressure two parts power management.High voltage power supply can be supplied directly to the emitter of transmitting terminal
Electricity.Low-tension supply is obtained after high voltage power supply step-down, it mainly gives the simulation of the present embodiment system, numerical portion to provide power supply.This
The control source of embodiment possesses wide pressure scope（24V to 36V）, can directly be powered for emitter, can be by voltage division processing
Signal processor, programmable logic device and single-chip microcomputer etc. provide low-voltage power supply.
Signal acquisition/playing module, is mainly made up of transmitter, codec, loudspeaker, for realizing to transmitter
Voice input signal is carried out being quantized into audio digital signals, or the speech data progress reduction after codec decompression is broadcast
Put or the location information destination node is acquired and reduced broadcasting.The present embodiment uses noise-reducing microphone, its spirit
Sensitivity is -66 ± 3dB（1000Hz 0dB=1V/μpar）, frequency response is 200~4000Hz, the Europe of impedance about 180；Codec
For TLV320AIC12K, it is a low cost, low-power consumption, high performance single-channel voice codec chip, contains 1 tunnel 16
Position A/D and 16,1 tunnel D/A.TLV320AIC12k realizes intelligent time division multi-path serial port（SMARTDM）, it is a synchronization
4 line serial ports, continuous data transmission mode and dynamic reconfiguration mode are supported in the port.TLV320AIC12k can nothing
Seam is connected to any SMARTDM cascade units, forms multichannel decoder-coder；Loudspeaker is by D audio frequency amplifier SSM2375 structures
Into it has the advantages that high efficiency, high power, low harmonics distortion and low quiescent current.
Coding/decoding module, is mainly made up of vocoder, for realizing to the numeral after signal acquisition/playing module quantization
Voice signal or framing signal（Location information between destination node）Compression and decompressing function.The encoding and decoding of the present embodiment
Module is made up of the AMBE3000 vocoders of DVSI companies, and it still keeps fairly good voice matter in speed as little as 2000bps
Amount, it can be in half-duplex and full duplex operation, in addition, AMBE3000 has the 2kbps~9.6kbps, stepping 50bps can
The code rate of control, variable forward error correction speed is 50bps~7.2kbps, can improve error code transmission.
Control module, is mainly made up of single-chip microcomputer, for realizing after the compression to the coding/decoding module or decompression
Signal（Including audio digital signals or framing signal）The control of output, the power supply of programmable logic device and data interaction with
And the control of sensor etc., running parameter（Including electricity, volume, distance, pattern）Control.The single-chip microcomputer of the present embodiment is TI
The single-chip microcomputer of the MSP430 series of production, the RISC of 16, the DMA of 3 passages, 2 groups of USCI multifunctional universal strings with 25MHZ
The features such as mouth.
Modulation /demodulation control module, is mainly made up of programmable logic device, signal processor etc., is compiled for realizing to described
Signal after decoder module compression or decompression（Including audio digital signals or framing signal）Modulation or demodulation.This implementation
The FPGA that programmable logic device in example is produced by Lattice companies is constituted, and model is ECP3-70EA-484, main to complete letter
Number collection, collecting sensor signal, emitter control and auxiliary calculate work.ECP3-70EA-484 is made using BGA package
The volume for obtaining it is smaller, and signal integrity is higher, and FPGA scale has reached 67K logic units, and with 128 18 × 18
Enhanced DSP unit；Signal processor uses the fixed point DSP TMS320C6455 produced by TI.Wherein, the fixed point is believed
Number processor TMS320C6455 includes：The S29AL032D70TA of a piece of ST companies production NORflash, capacity is 32Mbit,
Bit wide is 8；The MT47H64M16HR of 2 MICRON companies production DDR2, monolithic capacity is 1024Mbit, and bit wide is 16
Position；Daughter card module possesses the HPC interfaces of 400 pin.
Analog front-end module, mainly includes transmitter unit and receiving unit.Receiving unit is by preamplifier, signal condition
Circuit and analog-digital converter are constituted, and the input of signal, amplification and collection are received to complete transducer end.Transmitter unit is by digital-to-analogue
Converter, audio frequency power amplifier, transformer, matching inductance and transducer are constituted, to complete to adjust through the modulation /demodulation control module
The electricity of modulated signal after system and the conversion of acoustical signal.The analog front-end module of the present embodiment uses pre-amplification circuit, band logical
Wave filter and auto-gain circuit（AGC）, also rear class ADC analog-digital converters composition, analog front-end module use positive negative electricity
Source powers.The amplifier of bandpass filter realizes that auto-gain circuit is realized using VCA810 using AD8656 operational amplifiers.And
The AD7980 that the analog-digital converter ADC at rear portion is produced using ADI companies is realized.ADC uses SPI serial bus controls by FPGA.
The power consumption of whole analog front-end module is less than 260mW.
Data memory module, is mainly made up of the programmable logic device and storage card in the modulation /demodulation control module,
For the initial data for completing to collect the signal acquisition/playing module（Transmission signal and transmitter including transmitting terminal
The collection signal of input）Storage.
Power management module, signal acquisition/playing module, coding/decoding module, control module, modulation in above the present embodiment
Demodulation module, analog front-end module and data memory module etc., can be realized, therefore do not go to live in the household of one's in-laws on getting married herein using current prior art
State.
Further, the above-mentioned portable underwater digital handset communication system shown in Fig. 3 also sets up sensor, memory
And flash memory etc..The sensor includes temperature sensor/humidity sensor/EGC sensor etc., is mainly used to monitor the system
Humiture state and Heart Rate States etc..Memory is mainly to store number in the middle of the data processing in the signal processor
According to etc..And flash memory then mainly can be used to solidify the programming program code in the signal processor, the de- of signal processor is realized
Machine self-starting function.
It is the corresponding modulation /demodulation processing software flow schematic block of system of above-mentioned the present embodiment respectively shown in Fig. 4 a, Fig. 4 b
The flow of modulated terminal and demodulating end in figure, difference corresponding modulating demodulation module, the design cycle is simultaneously suitable for Position Modulation
Demodulation module and voice modulation demodulation module.The wherein handling process of modulated terminal such as Fig. 4 a, it includes：It is initial to module first
Change, then wait external interrupt（Key control is pressed by PPT）If producing, being waited for without interrupting；If there is interruption to produce,
Then start DMA and carry out data receiver, when caching less than, then continue waiting for, if caching is full, determine whether voice modulation, if
Voice modulation module is then called for voice modulation, Position Modulation module is otherwise called；Launch data with DMA if completion is modulated,
Otherwise continue waiting for；If data transmitting is completed, external interrupt is continued waiting for, data transmitting completion is otherwise continued waiting for.Demodulation
The handling process at end such as Fig. 4 b, it includes：First to module initialization, judge that data, to no, DMA are started if having data arrival
Data are received, data arrival is otherwise continued waiting for；Judge whether caching is full when to receive need after data, if continuation etc. less than if
Treat, otherwise synchronize detection；If synchronous detect successfully, it is true to judge that communication system chooses whether, if very, then calling voice
Demodulation module, otherwise calls positioning demodulation module；Then judge whether demodulation completes, starting DMA if completing is launched, no
Then wait；Wait new data to arrive if completion is launched, otherwise continue waiting for.
The portable digital that the invention described above is provided under water interphone communication system in the transmitting terminal as voice signal or
Implementation process during person's receiving terminal and in the transmitting terminal or receiving terminal as framing signal is as described below：
（One）Voice communication implementation process
Transmitting terminal：Signal acquisition/playing module collects analog voice signal at noise-reducing microphone first, then by the mould
Intend voice signal and be quantized into audio digital signals, and by the audio digital signals after AMBE3000 vocoders are compressed,
MSP430 single-chip microcomputers are given by serial ports, the MSP430 single-chip microcomputers are again by universal serial bus by the audio digital signals after compressing
The ECP3-70EA-484 programmable logic devices in described modulation /demodulation control module are given, the ECP3-70EA-484 may be programmed
Logic device then gives the audio digital signals by multichannel buffered serial port the signal transacting in modulation /demodulation control module
Device TMS320C6455, the TMS320C6455 signal processors are received after the audio digital signals, first by the digital speech
Signal is encrypted, and the audio digital signals after encrypting then are modulated into underwater sound signal, and the water by the modulation after complete again
Acoustical signal is transmitted to described programmable logic device ECP3-70EA-484, the programmable logic device by multichannel buffered serial port again
The transmitter unit for giving the AFE(analog front end) by the underwater sound signal is launched.
Receiving terminal：Underwater sound signal programmable is patrolled by what the receiving unit of the AFE(analog front end) was given in modulation /demodulation module
Device ECP3-70EA-484 is collected, the underwater sound signal is passed through into multichannel buffered serial port by programmable logic device ECP3-70EA-484
The signal processor TMS320C6455 in the modulation /demodulation control module is given, by the TMS320C6455 signal processors pair
The underwater sound signal generates audio digital signals after being demodulated, and the audio digital signals after demodulating is decrypted, the solution
Audio digital signals after close give the programmable logic device ECP3-70EA-484 by multichannel buffered serial port, can by this
The audio digital signals are given MSP430 single-chip microcomputers by programmed logic device by universal serial bus, and then the MSP430 single-chip microcomputers lead to again
Cross serial ports and give the AMBE3000 vocoders by the audio digital signals and decompressed, the digital speech after the decompression
Signal is delivered to voice collecting/playing module and reduced, and is then played through loudspeaker.
（Two）Positioning and communicating implementation process
Transmitting terminal：The positioning letter for the positioning that described MSP430 single-chip microcomputers are produced the MSP430 single-chip microcomputers by universal serial bus
The ECP3-70EA-484 programmable logic devices in modulation /demodulation control module number are given, by programmable logic device ECP3-
70EA-484 gives the framing signal by multichannel buffered serial port the signal processor in modulation /demodulation control module
TMS320C6455, after the framing signal is encrypted first for the TMS320C6455 signal processors, determining after this is encrypted
Underwater sound signal of the modulation after complete is transmitted to this by multichannel buffered serial port again and may be programmed by position signal modulation into underwater sound signal
Logic device ECP3-70EA-484, then the underwater sound signal is given to by the programmable logic device transmitting of the analog front-end module
Unit is launched.
Receiving terminal：Underwater sound signal gives programmable logic device ECP3-70EA- by the receiving unit of analog front-end module
484, then programmable logic device ECP3-70EA-484 give signal processor by multichannel buffered serial port by underwater sound signal
TMS320C6455, then, signal processor TMS320C6455 are demodulated to the underwater sound signal, then, and signal processor will
Framing signal after demodulation is decrypted, and the framing signal after decryption gives programmable logic device by multichannel buffered serial port,
Then, the framing signal is given MSP430 single-chip microcomputers by programmable logic device by universal serial bus, and MSP430 single-chip microcomputers pass through school
The framing signal got is tested, the distance of submarine target node is then calculated.
Claims (5)
1. a kind of digital underwater interphone communication method, including：Voice communication method and localization method, it is characterised in that：
（One）The transmitting terminal of described voice communication method includes the steps：
1）Firstly generate audio digital signals；
2）To above-mentioned steps 1）The audio digital signals of generation are encrypted；
3）To through above-mentioned steps 2）Audio digital signals after encryption carry out coded treatment；
4）To through above-mentioned steps 3）Audio digital signals data after coded treatment are interleaved processing；
5）To through above-mentioned steps 4）Data after intertexture carry out phase-modulation；
6）To through above-mentioned steps 5）Data after phase-modulation carry out pilot frequency sequence addition processing；
7）To through above-mentioned steps 6）Data after pilot frequency sequence addition processing carry out signal modulation and add synchronous head；
8）Will be through above-mentioned steps 7）Data after modulation are launched, and are transmitted in underwater acoustic channel；
（Two）The receiving terminal of described voice communication method comprises the following steps：
1）Receive the underwater sound signal in the underwater acoustic channel；
2）To above-mentioned steps 1）The underwater sound signal received carries out time synchronizing；
3）To through above-mentioned steps 2）Underwater sound signal output result after processing carries out signal demodulation process；
4）To through above-mentioned steps 3）The demodulation output data of processing carries out channel equalization；
5）To through above-mentioned steps 4）Data after channel equalization carry out phase demodulating processing；
6）To through above-mentioned steps 5）Data after phase demodulating are deinterleaved processing；
To through above-mentioned steps 6）Data after deinterleaving carry out decoding process；
8）To through above-mentioned steps 7）Processing is decrypted in decoded data, and carries out data convert；
（Three）The transmitting terminal of described localization method comprises the following steps：
1）Signal instruction is generated；
2）To above-mentioned steps 1）The data of middle signal instruction generation are encoded；
3）To through above-mentioned steps 2）Data after coding carry out M member quadrature carrier modulations；
4）Will be through above-mentioned steps 3）Data after modulation are timed synchronization process and launched, and are passed in described underwater acoustic channel
It is defeated；
（Four）The receiving terminal of described localization method comprises the following steps：
1）Underwater sound signal in underwater acoustic channel is captured, signal extraction is then synchronized；
2）To through above-mentioned steps 1）Data after synchronization are demodulated；
3）To through above-mentioned steps 2）Data after demodulation carry out decoding process；
4）To through above-mentioned steps 3）Data after decoding process carry out signal instruction recovery.
2. a kind of portable underwater digital handset communication system, it is characterised in that：The system includes：
Signal acquisition/playing module, including transmitter, codec and loudspeaker, for realizing the language to the transmitter
Sound input signal is carried out being quantized into audio digital signals, or the speech data after being decompressed by the codec is gone back
Original is played or the location information destination node is acquired and reduced broadcasting；
Coding/decoding module, for realizing to the audio digital signals after described quantization or the compression of framing signal and decompression work(
Energy；
Control module, for realizing the control to the signal after coding/decoding module compression or decompression, FPGA
The power supply of device and data interaction and the control of sensor, the control of running parameter；
Modulation /demodulation control module, including programmable logic device, signal processor, compress for realizing to the coding/decoding module
Or the modulation or demodulation of the signal after decompression；
Analog front-end module, including transmitter unit and receiving unit, the receiving unit include preamplifier, signal conditioning circuit
And analog-digital converter, the input of signal, amplification and collection are received to complete transducer end；The transmitter unit includes digital-to-analogue conversion
Device, audio frequency power amplifier, transformer, matching inductance and transducer, to complete the tune after being modulated through the modulation /demodulation control module
The electricity of signal processed and the conversion of acoustical signal；
Data memory module, including programmable logic device and storage card, completion are collected to the signal acquisition/playing module
The storage of initial data；
Power management module, including to high pressure and the two-part power management of low pressure, the high voltage power supply can be supplied directly to emitter
Electricity, the low-tension supply is mainly used in providing power supply to the simulation of the system, numerical portion.
3. portable underwater digital handset communication system according to claim 2, it is characterised in that：The system is also wrapped
Include sensor.
4. portable underwater digital handset communication system according to claim 2, it is characterised in that：The system is also wrapped
Include memory.
5. portable underwater digital handset communication system according to claim 2, it is characterised in that：The system is also wrapped
Include flash memory.
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