CN204362059U - Utilize the hidden underwater communication device of the camouflage of whale sound - Google Patents
Utilize the hidden underwater communication device of the camouflage of whale sound Download PDFInfo
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Abstract
The utility model belongs to field of underwater acoustic communication, utilizes the hidden underwater communication device of the camouflage of whale sound for providing a kind of, realizes pretending covert communications under water.For this reason, the technical scheme that the utility model is taked is, utilizes the hidden subsurface communication method of the camouflage of whale sound and device, comprising: be made up of two communication nodes 1 or 22, but be not limited to two communication nodes, or comprises a lot of communication nodes; And each communication node is by the 23rd signal transmitting module (23) or the 26th signal transmitting module (26), the 24th signal receiving module (24) or the 25th signal receiving module (25) composition; 23rd signal transmitting module (23) transmits control module (2), the 31st pattern time-delay coding device (31), the 3rd power amplifier (3) and the 4th voicing sensor (4) by the 2nd and forms.The utility model is mainly used in underwater sound communication.
Description
Technical field
The utility model belongs to field of underwater acoustic communication, specifically, relates to and utilizes the hidden underwater communication device of the camouflage of whale sound.
Background technology
In military channels, disguised most important, it is related to survival ability and the survival duration of military system.All the more so in communication system under water, such as adopt the submarine of covert communications can reduce the probability detected by enemy.In underwater communications system, overwhelming majority employing take sound wave as the communication mode of transmission medium.When communicating, originator needs to utilize emission sensor (such as launching hydrophone array) outwards to launch powerful acoustic signals; And the acoustic signals of routine mainly contains rectangular pulse waveform, chirp waveform etc., the envelope simple (for pulse rectangle) of these signals, and signal envelope internal modulation signal is generally the sine wave of single frequency sinusoidal ripple or frequency linearity change, these signal characteristics cause them to be easy to by the identification of enemy's reconnaissance system and location, thus causing originator to be exposed, this forms serious threat by the survival ability of originator.
The utility model provides a kind of and utilizes the hidden subsurface communication method of the camouflage of whale sound; The utility model adopts whale sound, and (the clicks pulse signal (see document [1]) of whale is as the transmitted waveform of underwater acoustic communication originator, pattern time-delay coding (see document [2]) communication mode is adopted to send whale acoustical signal, adopt random fit filter (stochastic matched filter, see document [3]) matched filtering process is carried out to whale acoustical signal, thus realize pretending covert communications under water.
List of references:
[1]Jaquet,N；Dawson,S；Douglas,L,Vocal behavior of male sperm whales why do they click[J],Journal of the Acoustical Society of America,109(5):2254-2259,May 2001.
[2] Wen Zhoubin, Feng Hai rise, Hui Junying, a kind of new underwater sound communication system [J], acoustic journal, 18 (5): 345-351,1993;
[3]Philippe Courmontagne,The Stochastic Matched Filter and Its Applications to Detection and De-Noising,InTechOpen,Published on:2010-08-17.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model is intended to overcome the shortcoming that existing underwater acoustic communication originator easily exposes self-position, provides a kind of and utilizes the hidden subsurface communication method of the camouflage of whale sound, realizes pretending covert communications under water.For this reason, the technical scheme that the utility model is taked is, utilizes the hidden underwater communication device of the camouflage of whale sound, comprising: be made up of at least one receipts, two communication nodes; And each communication node is by the 23rd signal transmitting module (23) or the 26th signal transmitting module (26), the 24th signal receiving module (24) or the 25th signal receiving module (25) composition; 23rd signal transmitting module (23) transmits control module (2), the 31st pattern time-delay coding device (31), the 3rd power amplifier (3) and the 4th voicing sensor (4) by the 2nd and forms; Similarly, the 26th signal transmitting module (26) transmits control module (18), the 33rd pattern time-delay coding device (33), the 17th power amplifier (17) and the 16th voicing sensor (16) by the 18th and forms; 24th signal receiving module (24) is made up of the 7th receiving sensor (7), the 6th signal conditioner (6), the 32nd delay inequality decoder (32) and the 5th collection of letters control module (5); Similarly, the 25th signal receiving module (25) is made up of the 21st receiving sensor (21), the 20th signal conditioner (20), the 34th delay inequality decoder (34) and the 19th collection of letters control module (19);
2nd transmits control module (2) by the information of required transmission, whale ping is produced with the coded system of delay inequality by the 31st pattern time-delay coding device (31), these pulse signals are sent to after the 3rd power amplifier (3) carries out power amplification, be resent to the 4th voicing sensor (4), the whale ping through amplifying sends by the 4th voicing sensor (4) again;
21st receiving sensor (21) is sent to the 20th signal conditioner (20) after converting the whale ping transmitted with sound wave form to the signal of telecommunication;
After 20th signal conditioner (20) carries out matched filtering process by random fit filter to the whale ping received, signal is outputted to the 34th delay inequality decoder (34), to extract the delay inequality information between whale ping, then these delay inequality information are sent to the 19th collection of letters control module (19);
19th collection of letters control module (19) identifies the delay inequality information that the 20th signal conditioner (20) sends, and recovers the 2nd and transmits the information that control module (2) sends;
18th transmits control module (18) by the information of required transmission, whale ping is produced with the coded system of delay inequality by the 33rd pattern time-delay coding device (33), these pulse signals are sent to after the 17th power amplifier (17) carries out power amplification, be resent to the 16th voicing sensor (16), the whale ping through amplifying sends by the 16th voicing sensor (16) again;
7th receiving sensor (7) is sent to the 6th signal conditioner (6) after converting the whale ping transmitted with sound wave form to the signal of telecommunication;
After 6th signal conditioner (6) carries out matched filtering process by random fit filter to the whale ping received, signal is outputted to the 32nd delay inequality decoder (32), to extract the delay inequality information between whale ping, then these delay inequality information are sent to the 5th collection of letters control module (5);
5th collection of letters control module (5) identifies the delay inequality information that the 6th signal conditioner (6) sends, and recovers the 18th and transmits the information that control module (18) sends.
Compared with the prior art, technical characterstic of the present utility model and effect:
The utility model provides a kind of and utilizes the hidden subsurface communication method of the camouflage of whale sound, it can not only overcome the shortcoming that general communication ping is easy to be identified and locate, the superior function such as also have that camouflage is disguised strong, communication distance is far away, traffic rate is high and communication reliability is high.
The utility model tool has the following advantages: (1) utilizes whale ping (clicks) to pretend underwater acoustic communication originator, improves the disguise of originator; (2) adopt pattern time-delay coding mode to carry out subsurface communication, effectively can overcome many ways impact of subsurface communication, ensure remote, two-forty and the high reliability of subsurface communication; (3) for the feature of whale acoustical signal, adopt random fit filter (stochastic matched filter) to carry out matched filtering process to whale acoustical signal, improve the processing accuracy of whale acoustical signal, ensure the reliability of communication; (4) frequency of pulse signal that sends compared with other aquatic organism of the frequency of whale ping is lower, thus whale ping can transmit farther, be a kind of good camouflage acoustical signal carrier realizing telecommunication.
Accompanying drawing explanation
Fig. 1 shows the universal model figure of the communication system described in the utility model.
Fig. 2 shows the pattern time-delay coding mode schematic diagram of the applicable whale sound feature described in the utility model.
In Fig. 1: 1 is communication node, 3 is power amplifier, 4 is voicing sensor, 5 is collection of letters control module, 6 is signal conditioner, 7 is receiving sensor, 8 is whale ping, 9 is whale ping, 10 is whale ping, 11 is whale ping, 12 is whale ping, 13 is whale ping, 14 is whale ping, 15 is whale ping, 16 is voicing sensor, 17 is power amplifier, 18 for transmitting control module, 19 is collection of letters control module, 20 is signal conditioner, 21 is receiving sensor, 22 is communication node, 23 is signal transmitting module, 24 is signal receiving module, 25 is signal receiving module, 26 is signal transmitting module, 31 is pattern time-delay coding device, 32 is delay inequality decoder, 33 is pattern time-delay coding device, 34 is delay inequality decoder.
In Fig. 2: 27 is frame-synchronizing impulse, 28 is leading code, and 29 is information code, and 30 is maximum time interval and minimal time delay interval schematic diagram.
Embodiment
The purpose of this utility model overcomes the shortcoming that existing underwater acoustic communication originator easily exposes self-position, provides a kind of and utilize the hidden subsurface communication method of the camouflage of whale sound; The utility model adopts whale sound as the transmitted waveform of underwater acoustic communication originator, pattern time-delay coding communication mode is adopted to send whale acoustical signal, adopt random fit filter (stochastic matched filter) to carry out matched filtering process to whale acoustical signal, thus realize pretending covert communications under water.
For overcoming the deficiencies in the prior art, the utility model provides a kind of and utilizes the hidden subsurface communication method of the camouflage of whale sound, and it can overcome conventional subsea sound communication originator and be easy to be identified and the shortcoming of locating.
The utility model tool has the following advantages: (1) utilizes whale ping (clicks) to pretend underwater acoustic communication originator, improves the disguise of originator; (2) adopt pattern time-delay coding mode to carry out subsurface communication, effectively can overcome many ways impact of subsurface communication, ensure remote, two-forty and the high reliability of subsurface communication; (3) for the feature of whale acoustical signal, adopt random fit filter (stochastic matched filter) to carry out matched filtering process to whale acoustical signal, improve the processing accuracy of whale acoustical signal, ensure the reliability of communication; (4) frequency of pulse signal that sends compared with other aquatic organism of the frequency of whale ping is lower, thus whale ping can transmit farther, be a kind of good camouflage acoustical signal carrier realizing telecommunication.
The technical scheme that the utility model is taked is, utilizes the hidden subsurface communication method of the camouflage of whale sound, comprising:
The first step: the universal model determining communication system.
Utilize the universal model of the hidden subsurface communication method of the camouflage of whale sound as shown in Figure 1, it forms primarily of communication node 1 or 22, but is not limited to two communication nodes, can comprise a lot of communication nodes; And each communication node is made up of signal transmitting module 23 or 26 and signal receiving module 24 or 25; Signal transmitting module 23 forms by transmitting control module 2, pattern time-delay coding device 31, power amplifier 3 and voicing sensor 4; Similarly, signal transmitting module 26 forms by transmitting control module 18, pattern time-delay coding device 33, power amplifier 17 and voicing sensor 16; Signal receiving module 24 is made up of receiving sensor 7, signal conditioner 6, delay inequality decoder 32 and collection of letters control module 5; Similarly, signal receiving module 25 is made up of receiving sensor 21, signal conditioner 20, delay inequality decoder 34 and collection of letters control module 19;
Further, transmit control module 2 by the information of required transmission, whale clicks ping is produced with the coded system of delay inequality (as shown in Figure 2) by pattern time-delay coding device 31, these pulse signals are sent to after power amplifier 3 carries out power amplification, be resent to voicing sensor 4, the whale clicks ping 8,9,10 or 11 through amplifying sends by voicing sensor 4 again;
Further, receiving sensor 21 is sent to signal conditioner 20 after converting the whale clicks ping 8,9,10 or 11 transmitted with sound wave form to the signal of telecommunication;
Further, after signal conditioner 20 carries out matched filtering process by random fit filter (principle of stochastic matched filter refers to document [3]) to the whale clicks ping received, signal is outputted to delay inequality decoder 34, to extract the delay inequality information between whale clicks ping, then these delay inequality information are sent to collection of letters control module 19;
Further, the delay inequality information that collection of letters control module 19 pairs of signal conditioners 20 send identifies, recovers the information transmitting control module 2 and send;
Further, comparatively the frequency of pulse signal that sends of other aquatic organism (such as dolphin) is lower for the frequency of whale ping (as pulse signal 8,9,10 or 11), so whale ping can transmit farther, be a kind of good camouflage acoustical signal carrier realizing telecommunication;
Similarly, further, transmit control module 18 by the information of required transmission, whale clicks ping is produced with the coded system of delay inequality (as shown in Figure 2) by pattern time-delay coding device 33, these pulse signals are sent to after power amplifier 17 carries out power amplification, be resent to voicing sensor 16, the whale clicks ping 12,13,14 or 15 through amplifying sends by voicing sensor 16 again;
Further, receiving sensor 7 is sent to signal conditioner 6 after converting the whale clicks ping 12,13,14 or 15 transmitted with sound wave form to the signal of telecommunication;
Further, after signal conditioner 6 carries out matched filtering process by random fit filter (principle of stochastic matched filter refers to document [3]) to the whale clicks ping received, signal is outputted to delay inequality decoder 32, to extract the delay inequality information between whale clicks ping, then these delay inequality information are sent to collection of letters control module 5;
Further, the delay inequality information that collection of letters control module 5 pairs of signal conditioners 6 send identifies, recovers the information transmitting control module 18 and send;
Second step: the pattern time-delay coding mode determining applicable whale sound feature.
As shown in Figure 2, a data frame format is made up of a framing lock-out pulse 27, leading code 28, many information codes 29 pattern time-delay coding mode;
Further, frame-synchronizing impulse 27, leading code 28, information code 29 are all for carrier with whale clicks ping;
Further, the time duration te of frame-synchronizing impulse 27, the time duration ta of leading code 28 and the time interval tc between frame-synchronizing impulse 27 and leading code 28 can be arranged according to actual needs, to ensure the reliability communicated;
Further, in information code 29, the time interval t between adjacent whale ping
1, t
2..., t
i-1all be not more than t
p, and t
pfor the maximum time interval between adjacent whale ping;
Further, t
p=mt
d, and m represents mbit information; t
drepresent the minimal time delay interval between two adjacent whale pings, as shown at 30 in figure 2;
Further, 0<t is worked as
i-1=kt
d+ t
y<t
p, during 0≤k<m (wherein, i be greater than 1 positive integer), t
i-1information representated by the time interval is k;
Further, by selecting whale ping, make the correlation in information code 29 between whale ping less, to ensure the highly reliable recognition capability of each whale ping; Meanwhile, the number of the whale ping that correlation is less is q;
Further, the size of q determines the amount of information entrained by each whale ping, and therefore, the large I of q needs to select according to practical application;
3rd step: the Signal Matching filtering method determining applicable whale sound feature.
The ping (such as single-frequency rectangular pulse signal, chirp pulse signal etc.) that whale ping is launched with conventional sound system has larger difference; The envelope change at random of whale ping, do not have fixing rule, envelope internal modulation signal is complicated broadband signal, and signal is non-stationary signal, have comparatively complicated time-frequency characteristic, this causes the more difficult design and implimentation of the more conventional ping of the matched filtering method of whale acoustical signal;
Further, for the matched filtering difficult point of above-mentioned whale acoustical signal, the utility model selects random fit filter (stochastic matched filter) to carry out matched filtering process to whale ping;
Further, random fit filter (stochastic matched filter) has the performance better suppressing multipath, and has well comparatively fruit to the reception of whale acoustical signal, can obtain very high handling property; Concrete principle and the application example of random fit filter (stochastic matched filter) can see document [3].
The utility model has following technique effect:
(1) utilize whale ping (clicks) to pretend underwater acoustic communication originator, improve the disguise of originator;
(2) adopt pattern time-delay coding mode to carry out subsurface communication, effectively can overcome many ways impact of subsurface communication, ensure remote, two-forty and the high reliability of subsurface communication;
(3) for the feature of whale acoustical signal, adopt random fit filter (stochastic matched filter) to carry out matched filtering process to whale acoustical signal, improve the processing accuracy of whale acoustical signal, ensure the reliability of communication;
(4) frequency of pulse signal that sends compared with other aquatic organism of the frequency of whale ping is lower, thus whale ping can transmit farther, be a kind of good camouflage acoustical signal carrier realizing telecommunication.
For overcoming the deficiencies in the prior art, the utility model provides a kind of and utilizes the hidden subsurface communication method of the camouflage of whale sound, it can not only overcome the shortcoming that general communication ping is easy to be identified and locate, the superior function such as also have that camouflage is disguised strong, communication distance is far away, traffic rate is high and communication reliability is high.
The utility model tool has the following advantages: (1) utilizes whale ping (clicks) to pretend underwater acoustic communication originator, improves the disguise of originator; (2) adopt pattern time-delay coding mode to carry out subsurface communication, effectively can overcome many ways impact of subsurface communication, ensure remote, two-forty and the high reliability of subsurface communication; (3) for the feature of whale acoustical signal, adopt random fit filter (stochastic matched filter) to carry out matched filtering process to whale acoustical signal, improve the processing accuracy of whale acoustical signal, ensure the reliability of communication; (4) frequency of pulse signal that sends compared with other aquatic organism of the frequency of whale ping is lower, thus whale ping can transmit farther, be a kind of good camouflage acoustical signal carrier realizing telecommunication.
The utility model is achieved in that
The first step: the universal model of communication system.
Utilize the universal model of the hidden subsurface communication method of the camouflage of whale sound as shown in Figure 1, it forms primarily of communication node 1 or 22, but is not limited to two communication nodes, can comprise a lot of communication nodes; And each communication node is made up of signal transmitting module 23 or 26 and signal receiving module 24 or 25; Signal transmitting module 23 forms by transmitting control module 2, pattern time-delay coding device 31, power amplifier 3 and voicing sensor 4;
Further, similarly, signal transmitting module 26 forms by transmitting control module 18, pattern time-delay coding device 33, power amplifier 17 and voicing sensor 16; Signal receiving module 24 is made up of receiving sensor 7, signal conditioner 6, delay inequality decoder 32 and collection of letters control module 5; Similarly, signal receiving module 25 is made up of receiving sensor 21, signal conditioner 20, delay inequality decoder 34 and collection of letters control module 19;
Further, transmit control module 2 by the information of required transmission, whale clicks ping is produced with the coded system of delay inequality (as shown in Figure 2) by pattern time-delay coding device 31, these pulse signals are sent to after power amplifier 3 carries out power amplification, be resent to voicing sensor 4, the whale clicks ping 8,9,10 or 11 through amplifying sends by voicing sensor 4 again;
Further, receiving sensor 21 is sent to signal conditioner 20 after converting the whale clicks ping 8,9,10 or 11 transmitted with sound wave form to the signal of telecommunication;
Further, after signal conditioner 20 carries out matched filtering process by random fit filter (principle of stochastic matched filter refers to document [3]) to the whale clicks ping received, signal is outputted to delay inequality decoder 34, to extract the delay inequality information between whale clicks ping, then these delay inequality information are sent to collection of letters control module 19;
Further, the delay inequality information that collection of letters control module 19 pairs of signal conditioners 20 send identifies, recovers the information transmitting control module 2 and send;
Similarly, further, transmit control module 18 by the information of required transmission, whale clicks ping is produced with the coded system of delay inequality (as shown in Figure 2) by pattern time-delay coding device 33, these pulse signals are sent to after power amplifier 17 carries out power amplification, be resent to voicing sensor 16, the whale clicks ping 12,13,14 or 15 through amplifying sends by voicing sensor 16 again;
Further, receiving sensor 7 is sent to signal conditioner 6 after converting the whale clicks ping 12,13,14 or 15 transmitted with sound wave form to the signal of telecommunication;
Further, after signal conditioner 6 carries out matched filtering process by random fit filter (stochastic matched filter) to the whale clicks ping received, signal is outputted to delay inequality decoder 32, to extract the delay inequality information between whale clicks ping, then these delay inequality information are sent to collection of letters control module 5;
Further, the delay inequality information that collection of letters control module 5 pairs of signal conditioners 6 send identifies, recovers the information transmitting control module 18 and send;
Second step: the pattern time-delay coding mode determining applicable whale sound feature.
As shown in Figure 2, a data frame format is made up of a framing lock-out pulse 27, leading code 28, many information codes 29 pattern time-delay coding mode;
Further, frame-synchronizing impulse 27, leading code 28, information code 29 are all for carrier with whale clicks ping;
Further, the time duration te of frame-synchronizing impulse 27, the time duration ta of leading code 28 and the time interval tc between frame-synchronizing impulse 27 and leading code 28 can be arranged according to actual needs, to ensure the reliability communicated;
Further, in information code 29, the time interval t between adjacent whale ping
1, t
2..., t
i-1all be not more than t
p, and t
pfor the maximum time interval between adjacent whale ping;
Further, t
p=mt
d, and m represents mbit information; t
drepresent the minimal time delay interval between two adjacent whale pings, as shown at 30 in figure 2;
Further, 0<t is worked as
i-1=kt
d+ t
y<t
p, during 0≤k<m (wherein, i be greater than 1 positive integer), t
i-1information representated by the time interval is k;
Further, by selecting whale ping, make the correlation in information code 29 between whale ping less, to ensure the highly reliable recognition capability of each whale ping; Meanwhile, the number of the whale ping that correlation is less is q;
Further, the size of q determines the amount of information entrained by each whale ping, and therefore, the large I of q needs to select according to practical application;
3rd step: matched filtering process is carried out to whale ping.
Further, for the matched filtering difficult point of above-mentioned whale acoustical signal, the utility model selects random fit filter (stochastic matched filter) to carry out matched filtering process to whale ping;
Further, random fit filter (stochastic matched filter) has the performance better suppressing multipath, and has well comparatively fruit to the reception of whale acoustical signal, can obtain very high handling property; Concrete principle and the application example of random fit filter (stochastic matched filter) can see document [3].
Claims (1)
1. utilize the hidden underwater communication device of the camouflage of whale sound, it is characterized in that, comprising: be made up of at least one receipts, two communication nodes; And each communication node is by the 23rd signal transmitting module (23) or the 26th signal transmitting module (26), the 24th signal receiving module (24) or the 25th signal receiving module (25) composition; 23rd signal transmitting module (23) transmits control module (2), the 31st pattern time-delay coding device (31), the 3rd power amplifier (3) and the 4th voicing sensor (4) by the 2nd and forms; Similarly, the 26th signal transmitting module (26) transmits control module (18), the 33rd pattern time-delay coding device (33), the 17th power amplifier (17) and the 16th voicing sensor (16) by the 18th and forms; 24th signal receiving module (24) is made up of the 7th receiving sensor (7), the 6th signal conditioner (6), the 32nd delay inequality decoder (32) and the 5th collection of letters control module (5); Similarly, the 25th signal receiving module (25) is made up of the 21st receiving sensor (21), the 20th signal conditioner (20), the 34th delay inequality decoder (34) and the 19th collection of letters control module (19);
2nd transmits control module (2) by the information of required transmission, whale ping is produced with the coded system of delay inequality by the 31st pattern time-delay coding device (31), these pulse signals are sent to after the 3rd power amplifier (3) carries out power amplification, be resent to the 4th voicing sensor (4), the whale ping through amplifying sends by the 4th voicing sensor (4) again;
21st receiving sensor (21) is sent to the 20th signal conditioner (20) after converting the whale ping transmitted with sound wave form to the signal of telecommunication;
After 20th signal conditioner (20) carries out matched filtering process by random fit filter to the whale ping received, signal is outputted to the 34th delay inequality decoder (34), to extract the delay inequality information between whale ping, then these delay inequality information are sent to the 19th collection of letters control module (19);
19th collection of letters control module (19) identifies the delay inequality information that the 20th signal conditioner (20) sends, and recovers the 2nd and transmits the information that control module (2) sends;
18th transmits control module (18) by the information of required transmission, whale ping is produced with the coded system of delay inequality by the 33rd pattern time-delay coding device (33), these pulse signals are sent to after the 17th power amplifier (17) carries out power amplification, be resent to the 16th voicing sensor (16), the whale ping through amplifying sends by the 16th voicing sensor (16) again;
7th receiving sensor (7) is sent to the 6th signal conditioner (6) after converting the whale ping transmitted with sound wave form to the signal of telecommunication;
After 6th signal conditioner (6) carries out matched filtering process by random fit filter to the whale ping received, signal is outputted to the 32nd delay inequality decoder (32), to extract the delay inequality information between whale ping, then these delay inequality information are sent to the 5th collection of letters control module (5);
5th collection of letters control module (5) identifies the delay inequality information that the 6th signal conditioner (6) sends, and recovers the 18th and transmits the information that control module (18) sends.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486006A (en) * | 2014-12-02 | 2015-04-01 | 天津大学 | Method and device for carrying out camouflaged covert underwater communication by utilizing whale sound |
| CN105044727A (en) * | 2015-08-04 | 2015-11-11 | 天津大学 | Underwater hidden sonar signal waveform construction method by utilizing sound emitted by sperm whale |
| CN110460393A (en) * | 2019-06-28 | 2019-11-15 | 天津大学 | The communication means of encoding and decoding is carried out using whale/dolphin cry number of pulses difference |
| CN110545124A (en) * | 2019-08-09 | 2019-12-06 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN111064527A (en) * | 2019-12-24 | 2020-04-24 | 天津大学 | Camouflage hidden wireless networking communication method based on dark green bird-scaring |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486006A (en) * | 2014-12-02 | 2015-04-01 | 天津大学 | Method and device for carrying out camouflaged covert underwater communication by utilizing whale sound |
| CN105044727A (en) * | 2015-08-04 | 2015-11-11 | 天津大学 | Underwater hidden sonar signal waveform construction method by utilizing sound emitted by sperm whale |
| CN105044727B (en) * | 2015-08-04 | 2017-08-08 | 天津大学 | The Sonar Signal waveform construction method hidden under water called using sperm whale |
| CN110460393A (en) * | 2019-06-28 | 2019-11-15 | 天津大学 | The communication means of encoding and decoding is carried out using whale/dolphin cry number of pulses difference |
| CN110545124A (en) * | 2019-08-09 | 2019-12-06 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN110545124B (en) * | 2019-08-09 | 2021-07-27 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN111064527A (en) * | 2019-12-24 | 2020-04-24 | 天津大学 | Camouflage hidden wireless networking communication method based on dark green bird-scaring |
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