CN206226446U - A kind of underwater acoustic channel noise jamming detection means - Google Patents
A kind of underwater acoustic channel noise jamming detection means Download PDFInfo
- Publication number
- CN206226446U CN206226446U CN201621274864.3U CN201621274864U CN206226446U CN 206226446 U CN206226446 U CN 206226446U CN 201621274864 U CN201621274864 U CN 201621274864U CN 206226446 U CN206226446 U CN 206226446U
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- China
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- channel
- unit
- judgement comparator
- underwater acoustic
- noise
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Abstract
The utility model is related to a kind of underwater acoustic channel noise jamming detection means, including：Signal receiver, modulo operation unit, threshold settings unit, judgement comparator and processor unit；Wherein described signal receiver is used to receiving the noise signal of detected channel, and including：The narrow band filter composition that receive transducer is connected with the receive transducer；The modulo operation unit is used to calculate the noise power value of tested channel and analog quantity is converted into digitized energy value, and digitized energy value is input into the first input end of judgement comparator；The threshold settings unit is used to set a threshold value, and is connected with the second input of judgement comparator；The output end of the judgement comparator is connected with processor unit；The processor unit is used to select detected channel, and decides whether to use the channel transmission data according to the output result of judgement comparator.
Description
Technical field
The utility model is related to a kind of underwater acoustic channel noise jamming detection means.
Background technology
Subsurface communication is mainly used in military field at the beginning, recently as marine resources constantly by human development profit
With for example to environmental system pollution monitoring, marine resources and hydrologic exploration, under water frogman's operation etc. so that subsurface communication should
It is more and more openr with prospect.
Subsurface communication technology commonly uses sound wave as telecommunication media, complicated yet with underwater acoustic channel environment, is nature
One of maximum radio communication channel of boundary's intractability, the communication spectrum that it can be used for data transfer is extremely limited, is focusing only on
In the range of more than ten KHzs to hundreds of KHzs, and the frequency range is easily influenceed by ambient noise high under water, therefore, transmission letter
Number inevitably it is interfered.If transmitting data using the underwater acoustic channel that there is noise jamming, data transfer can be influenceed
Stability, or even can also cause the loss of information.
Utility model content
The purpose of this utility model is to provide a kind of underwater acoustic channel noise jamming detection means, to the free time before data transfer
Underwater acoustic channel detected, select the low underwater acoustic channel of noise jamming degree for underwater data transmit, so as to avoid access
The underwater acoustic channel of strong noise interference, has ensured the stability of underwater sound communication.
In order to solve the above-mentioned technical problem, the utility model provides a kind of underwater acoustic channel noise jamming detection means, bag
Include：Signal receiver, modulo operation unit, threshold settings unit, judgement comparator and processor unit；Wherein described letter
Number receiver is used to receive the noise signal of detected channel, and including：Receive transducer is narrow with what the receive transducer was connected
Band filter is constituted；The modulo operation unit is used to calculate the noise power value of tested channel and analog quantity is converted into numeral
Change energy value, and digitized energy value is input into the first input end of judgement comparator；The threshold settings unit is used for
A threshold value is set, and is connected with the second input of judgement comparator；The output end and processor list of the judgement comparator
Unit is connected；The processor unit is used to select detected channel, and determines to be according to the output result of judgement comparator
It is no to use the channel transmission data.
Further, the modulo operation unit includes：Square-law detector, integrator and the A/D samplers being sequentially connected with.
Effect of the utility model relative to prior art：The utility model is before data transfer to idle underwater acoustic channel
Detected, the noise signal of channel is detected by receiving to calculate the noise power value of the channel, by noise power value
Threshold value with setting is compared, and selects the low underwater acoustic channel of noise jamming degree and is transmitted for underwater data, so as to avoid
The underwater acoustic channel of strong noise interference is accessed, the stability of underwater sound communication has been ensured.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the theory diagram of underwater acoustic channel noise jamming detection means of the present utility model.
It is entitled shown in label in accompanying drawing：1 signal receiver；101 receive transducers；102 narrow band filters；2 moduluses are transported
Calculate unit；201 square-law detectors；202 integrators；203A/D samplers；3 threshold settings units；4 judgement comparators；At 5
Reason device unit.
Specific embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Basic structure of the present utility model is only illustrated in a schematic way, therefore it only shows the composition relevant with the utility model.
As shown in figure 1, the utility model provides a kind of underwater acoustic channel noise jamming detection means, including：Signal is received
Device 1, modulo operation unit 2, threshold settings unit 3, judgement comparator 4 and processor unit 5.The signal receiver 1,
It is made up of receive transducer 101 and narrow band filter 102, the noise signal for receiving detected channel；The reception transducing
Device 101, is piezoelectric transducer.The modulo operation unit 2, by the square-law detector 201, the integrator 202 that are sequentially connected with
Constituted with A/D samplers 203, for calculating the noise power value of tested channel and analog quantity being converted into digitized energy value.
The threshold settings unit 3, is connected, with judgement comparator 4 for setting a threshold value.The judgement comparator 4, two defeated
Enter end to be connected with modulo operation unit 2, threshold settings unit 3 respectively, output end is connected with processor unit；The judgement ratio
Compared with device 4, the comparing for being digitized energy value and threshold value, and court verdict is exported to processor unit 5.The treatment
Device unit 5, is connected with signal receiver 1 and judgement comparator 4；The processor unit 5, for selecting detected channel,
And according to judgement comparator 4 output result come decide whether use the channel transmission data；The processor unit 5, uses
Microcontroller implementation.
This detection means detects that its workflow is as follows before data transfer to idle underwater acoustic channel：
First, processor unit 5 randomly chooses an idle underwater acoustic channel, and the band information of tested underwater acoustic channel is sent out
Signal receiver 1 is delivered to, adjustment narrow band filter 102 is received window by signal receiver 1 after receiving the information, in detection
It is interior, the noise signal of detected channel is received by receive transducer 101；
Then, the modulus being made up of the square-law detector 201, integrator 202 and the A/D samplers 203 that are sequentially connected with is transported
Unit completion is calculated to digitizing the calculating of energy value, meanwhile, threshold settings unit 3 is by according to required by completing signal transmission
Signal to noise ratio snr size, sets a noise energy threshold value；
Then, the threshold value set by the energy value and threshold settings unit 3 of the gained of modulo operation unit 2 will be fed into sentencing
Certainly comparator 4 is compared.If energy value is not less than threshold value, judge that noise jamming degree is higher, the channel is unavailable (to use 0
Represent)；If energy value is less than threshold value, judge that noise jamming degree is smaller, the channel is available channel (being represented with 1)；
Finally, processor unit 5 by according to judgement comparator 4 output result (0 or 1) come decide whether use the letter
Transmit data in road.Select the low underwater acoustic channel of noise jamming degree by this mode to be transmitted for underwater data, so as to avoid
The underwater acoustic channel of strong noise interference is accessed, the stability of underwater sound communication has been ensured.
With above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this utility model technological thought completely.This reality
The content on specification is not limited to new technical scope, it is necessary to its technology is determined according to right
Property scope.
Claims (2)
1. a kind of underwater acoustic channel noise jamming detection means, it is characterised in that including：
Signal receiver, modulo operation unit, threshold settings unit, judgement comparator and processor unit；Wherein
The signal receiver is used to receiving the noise signal of detected channel, and including：Receive transducer and the reception transducing
The connected narrow band filter composition of device；
The modulo operation unit is used to calculate the noise power value of tested channel and analog quantity is converted into digitized energy value,
And be input into digitized energy value to the first input end of judgement comparator；
The threshold settings unit is used to set a threshold value, and is connected with the second input of judgement comparator；
The output end of the judgement comparator is connected with processor unit；
The processor unit is used to select detected channel, and decides whether to make according to the output result of judgement comparator
Use the channel transmission data.
2. underwater acoustic channel noise jamming detection means according to claim 1, it is characterised in that
The modulo operation unit includes：Square-law detector, integrator and the A/D samplers being sequentially connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274864.3U CN206226446U (en) | 2016-11-25 | 2016-11-25 | A kind of underwater acoustic channel noise jamming detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274864.3U CN206226446U (en) | 2016-11-25 | 2016-11-25 | A kind of underwater acoustic channel noise jamming detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226446U true CN206226446U (en) | 2017-06-06 |
Family
ID=58786908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621274864.3U Expired - Fee Related CN206226446U (en) | 2016-11-25 | 2016-11-25 | A kind of underwater acoustic channel noise jamming detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226446U (en) |
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2016
- 2016-11-25 CN CN201621274864.3U patent/CN206226446U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20191125 |