CN108279418A - Utilize the combined detection and communication device and method of whale sound - Google Patents
Utilize the combined detection and communication device and method of whale sound Download PDFInfo
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- CN108279418A CN108279418A CN201810019923.XA CN201810019923A CN108279418A CN 108279418 A CN108279418 A CN 108279418A CN 201810019923 A CN201810019923 A CN 201810019923A CN 108279418 A CN108279418 A CN 108279418A
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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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/42—Simultaneous measurement of distance and other co-ordinates
-
- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/50—Systems of measurement, based on relative movement of the target
- G01S15/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
Abstract
The invention belongs to target acquisitions and the communications field, to propose a kind of combined detection using whale sound and signal of communication building method and treatment technology.Thus, the technical solution adopted by the present invention is, using combined detection and communication device and the method for whale sound, transmitting terminal is by cry pulse storehouse memorizer, communication burst generator, combined detection and the signal of communication generator, masking signal generator, signal projector, the Sonar Signal generator that are sequentially connected；Receiving terminal is made of signal receiver, low-pass filter, distance and the speed estimator, high-pass filter, communication decoder being sequentially connected.Present invention is mainly applied to target acquisitions and communication situation.
Description
Technical field
The invention belongs to target acquisition and the communications field, especially a kind of combined detection using whale sound and signal of communication structure
Make method and treatment technology.
Background technology
The Sonar Signal that traditional active sonar platform is launched is only used for realizing the detection of submarine target, these
Sonar Signal does not have the function of communication.Therefore, it is necessary to research and develop the technology communicated by sonar transmission signal.
Invention content
In order to overcome the deficiencies of the prior art, the present invention is directed to propose a kind of combined detection using whale sound and signal of communication structure
Make method and treatment technology.For this purpose, the technical solution adopted by the present invention is, the combined detection and communication means of whale sound, step are utilized
It is rapid as follows：
The first step：It is as follows using the combined detection and signal of communication building method of whale sound：
First, it is T to generate a time duration1, initial frequency f1, termination frequency be f2Sonar Signal s1
(t), this linear FM signal s then, is utilized1(t) it is used as Sonar Signal, realizes the active probe of submarine target；
Another is formed with M2The cry pulse library KU2 of a cry pulse；
Further, the time difference between cry pulse in the cry pulse library of two cry pulses is utilizedIt is communicated
Binary number encodes；More specifically, when between the central instant and the central instant of another cry pulse of a cry pulse
Time difference beWhen, this time differenceRepresent communication binary number " 0 "；And one cry pulse central instant with it is another
It is a cry pulse central instant between time difference beWhen, this time differenceRepresent communication binary number " 1 "；It presses
According to above-mentioned encoding law, communication burst s can be formed using a series of cry pulses2(t), the biography of the communication information is realized
It passs；
Further, by above-mentioned Sonar Signal s1(t) with communication burst s2(t) signal waveform carries out at corresponding addition
Reason, then, obtains combined detection and signal of communication s3(t)；
Further, one section of original sperm whale is selected to call train of pulse, it will be in the original sperm whale cry train of pulse
A period of time length be T1Cry train of pulse remove, then, then by combined detection and signal of communication s3(t) it is placed to and is moved
The length removed is T1Cry train of pulse where position, form train of pulse s4(t)；
Second step：Include two aspects using the combined detection and signal of communication treatment technology of whale sound, the first aspect is
Signal processing of sonar technology, the second aspect are signal of communication treatment technology；
It is Signal processing of sonar technology first：
The combined detection and signal of communication being reflected back by submarine target are received by the signal receiver on sonar contact platform
Afterwards, the whale in high band is filtered by a low-pass filter and calls pulse, then obtain waveform, obtained waveform pass through away from
After being handled with speed estimator, the distance of submarine target and the estimated value of speed parameter are obtained；
Followed by signal of communication processing step：
Low-pass filter is first passed around with signal of communication by the combined detection that subsurface communication receiving platform receives and filters height
The whale of frequency range calls pulse, waveform is then obtained, then, it is determined that the time duration T of waveform1, that is, Sonar Signal s1
(t) time span and the period occurred, on the basis of this period, the combination by high-pass filter to receiving
Detection carries out high-pass filtering with signal of communication, filters the Sonar Signal in low-frequency range, obtains the cry pulse in high band
Then communication burst, then is sent into communication decoder and is decoded processing by string, that is, communication burst, logical to decode
Letter information.
Sonar Signal s1(t) it can be pure-tone pulse signal, linear FM signal or Hyperbolic Frequency Modulation signal.
Further, Sonar Signal and communication burst are detached in order to facilitate signal receiving platform, so, it is desirable that
f2Meet following require：f2＜ fT。
Further, each cry pulse is singly intercepted out in original sperm whale cry string, it then, will be every
Itself is normalized in a cry pulse, finally, with one tool of all cry pulse shapings after normalized
There is M1The cry pulse library KU1 of a cry pulse；Further, energy is carried out to cry pulse each of in cry pulse library KU1
Spectrum analysis is measured, the total energy value E of each cry pulse is calculated1；Then, a frequency threshold f is setT, calculate each cry pulse
In frequency threshold fTThe energy value E of frequencies above section2；Then, then E is sought2With E1Ratio R1；If R1＞ 0.7, then retain pair
The cry pulse answered；, whereas if R1＜ 0.7 then removes corresponding cry pulse；Further, it is remained with all
Cry pulse shaping another with M2The cry pulse library KU2 of a cry pulse；
Further, original sperm whale cry string refers to the sperm whale cry recorded by sound recording apparatus
String；
Further,Certainly it is required to be much smaller than linear FM signal s1(t) time duration T1, andIt can root
It is adjusted according to the requirement of communication speed, when communication speed requires higher,What should be set is smaller, and when logical
When believing that rate request is lower,What should be set is larger；Specific size should according to actual communication speed demand into
Row adjustment.
Comprising the concrete steps that in one example：
(1) communication burst generator takes out pulse from cry pulse library KU2, then, according to communication number to be transmitted
According to, and according to the above-mentioned coding method using the time difference, generate communication burst s2(t)；
(2) according to the needs of actual detection target, Sonar Signal generator generates Sonar Signal s1(t)；
(3) combined detection receives with signal of communication generator and is transmitted through the communication arteries and veins come from communication burst generator respectively
Punching string s2(t) and reception is transmitted through the Sonar Signal s come from Sonar Signal generator1(t), then, the two signals are carried out pair
It should be added processing, obtain combined detection and signal of communication s3(t)；Masking signal generator from original sperm whale cry string with
One section of original sperm whale cry string is taken out to machine, the combination spy come is then transmitted through using combined detection and signal of communication generator
It surveys and signal of communication s3(t) the cry string for replacing same time length in original sperm whale cry string, forms train of pulse s4(t)；
Further, train of pulse s4(t) launched by signal projector.
Using the combined detection and communication device of whale sound, transmitting terminal by be sequentially connected cry pulse storehouse memorizer, communication
Pulse series generator, combined detection and signal of communication generator, masking signal generator, signal projector, Sonar Signal generate
Device；
Communication burst generator is used to utilize the time difference between two cry pulsesCommunication binary number is carried out to compile
Code；Specifically, it is when the time difference between the central instant and the central instant of another cry pulse of a cry pulse
When, this time differenceRepresent communication binary number " 0 "；And the central instant of a cry pulse and another cry pulse
Time difference between central instant isWhen, this time differenceRepresent communication binary number " 1 "；It is advised according to above-mentioned coding
Rule, can form communication burst s using a series of cry pulses2(t), by communication burst s2(t) it is sent to combined detection
With signal of communication generator；
Combined detection is used for signal of communication generator will be from the Sonar Signal s of Sonar Signal generator1(t) with communicate
Train of pulse s2(t) signal waveform carries out corresponding addition processing, then, obtains combined detection and signal of communication s3(t)；
Masking signal generator randomly takes out one section of original sperm whale from original sperm whale cry string and calls string,
Then the combined detection come and signal of communication s are transmitted through using combined detection and signal of communication generator3(t) what replacement was original smears perfume (or spice)
The cry string of same time length, forms train of pulse s in whale cry string4(t)；Train of pulse s4(t) launched by signal projector
It goes；
Receiving terminal by be sequentially connected signal receiver, low-pass filter, distance and speed estimator, high-pass filter,
Communication decoder is constituted；
The combined detection and signal of communication being reflected back by submarine target are received by the signal receiver on sonar contact platform
Afterwards, the whale in high band is filtered by a low-pass filter and calls pulse, then obtain waveform, the waveform is through distance and speed
After spending estimator processing, the distance of submarine target and the estimated value of speed parameter are obtained；
Combined detection and signal of communication first pass around the whale cry pulse that low-pass filter filters high band, then determining
To the time duration T of waveform1With the period occurred, T1Namely Sonar Signal s1(t) time span, with this
On the basis of period, high-pass filtering is carried out with signal of communication to the combined detection received by high-pass filter, filters and is in
The Sonar Signal of low-frequency range obtains the cry train of pulse in high band, that is, communication burst, then, then will communicate arteries and veins
Punching string is sent into communication decoder and is decoded processing, to decode the communication information.
The features of the present invention and advantageous effect are：
The present invention carries out detection using the combination of whale sound and is constructed with signal of communication, can improve the profit of flat pad hardware system
With rate；
Further, due in combined detection and signal of communication s3(t) front and back all adds original sperm whale cry
String realizes true Sonar Signal and communication burst so be used as blindage by using original sperm whale cry string
It is hidden；
Further, the ingenious corresponding addition for calling pulse with sperm whale by Sonar Signal is handled, and realizes theirs
It has the right to merge；By the combination of high band filter and low-pass filter, their separation is easily realized.
Description of the drawings：
Fig. 1 shows the waveform combination mistake that heretofore described Sonar Signal, communication burst are gone here and there with original sperm whale cry
Journey.
Fig. 2 shows heretofore described Sonar Signal, the combination flow charts of communication burst and original sperm whale cry string.
Fig. 3 shows reception and the processing procedure of heretofore described Sonar Signal.
Fig. 4 shows reception and the process flow of heretofore described Sonar Signal.
Fig. 5 shows reception and the processing procedure of heretofore described signal of communication.
In Fig. 2：1 is cry pulse library KU2；2 be communication burst generator；3 generate for combined detection and signal of communication
Device；4 be masking signal generator；5 be signal projector；6 call for original sperm whale；7 be Sonar Signal generator.
In Fig. 3：8 be signal receiver；10 be low-pass filter；9 be distance and speed estimator.
In Fig. 4：9 be the combined detection and signal of communication being reflected back by submarine target；10 be low-pass filter；11 be to be located
Sonar waveform after reason；12 be distance and speed estimator.
In Fig. 5：13 be the combined detection and signal of communication received by subsurface communication receiving platform；14 be low-pass filtering
Device；15 be high-pass filter；16 be cry train of pulse；17 is by treated sonar waveforms；18 be communication decoder.
Specific implementation mode
The present invention proposes a kind of combined detection using whale sound and signal of communication building method and treatment technology；The present invention
By traditional Sonar Signal (such as linear FM signal (LFM signals) or Hyperbolic Frequency Modulation signal (HFM signals)) and sperm whale
Cry pulse is combined, and constructs a kind of signal waveform of combination；The combination signal waveform not only serves as active sonar letter
Number, it realizes the detection of submarine target, and signal of communication can also be used as simultaneously, realizes the communication between underwater platform；Meanwhile this hair
The signal processing method that bright offer matches with heretofore described combined waveform.
The invention is realized in this way：
The first step：It is as follows using the combined detection and signal of communication building method of whale sound：
First, it is T to generate a time duration1, initial frequency f1, termination frequency be f2Sonar Signal s1
(t), this linear FM signal s then, is utilized1(t) it is used as Sonar Signal, realizes the active probe of submarine target；The sonar
Signal s1(t) it can be pure-tone pulse signal, linear FM signal, Hyperbolic Frequency Modulation signal etc.；Such as one is given in Fig. 1 (a)
The example of a linear FM signal；
Further, each cry pulse is singly intercepted out in original sperm whale cry string, it then, will be every
Itself is normalized in a cry pulse, finally, with one tool of all cry pulse shapings after normalized
There is M1The cry pulse library KU1 of a cry pulse；Further, energy is carried out to cry pulse each of in cry pulse library KU1
Spectrum analysis is measured, the total energy value E of each cry pulse is calculated1；Then, a frequency threshold f is setT, calculate each cry pulse
In frequency threshold fTThe energy value E of frequencies above section2；Then, then E is sought2With E1Ratio R1；If R1＞ 0.7, then retain pair
The cry pulse answered；, whereas if R1＜ 0.7 then removes corresponding cry pulse；Further, it is remained with all
Cry pulse shaping another with M2The cry pulse library KU2 of a cry pulse；
Further, original sperm whale cry string refers to the sperm whale cry recorded by sound recording apparatus
String；
Further, the time difference between two cry pulses is utilizedCarry out communication binary number coding；More specifically,
It is when the time difference between the central instant and the central instant of another cry pulse of a cry pulseWhen, this time
DifferenceRepresent communication binary number " 0 "；And one cry pulse central instant with another cry pulse central instant it
Between time difference beWhen, this time differenceRepresent communication binary number " 1 "；According to above-mentioned encoding law, can use
A series of cry pulses form communication burst s2(t), the transmission of the communication information is realized；One is given in Fig. 1 (b) specifically
Example, in Fig. 1 (b), first cry pulse and second cry pulse between time difference beSo this when
Between difference represent communication binary number " 1 "；At the same time, the time difference between second cry pulse and third cry pulse isSo this time difference represents communication binary number " 0 "；
Further, Sonar Signal and communication burst are detached in order to facilitate signal receiving platform, so, it is desirable that
f2Meet following require：f2＜ fT；
Further,Certainly it is required to be much smaller than linear FM signal s1(t) time duration is T1, andIt can root
It is adjusted according to the requirement of communication speed, when communication speed requires higher,What should be set is smaller, and when logical
When believing that rate request is lower,What should be set is larger；Specific size should according to actual communication speed demand into
Row adjustment；
Further, by above-mentioned Sonar Signal s1(t) with communication burst s2(t) signal waveform carries out at corresponding addition
Reason, then, obtains combined detection and signal of communication s3(t)；For example, Fig. 1 (a) is carried out with the signal waveform in Fig. 1 (b) corresponding
Addition is handled, and can obtain the combined detection in Fig. 1 (c) and signal of communication；
Further, one section of original sperm whale is selected to call train of pulse, it will be in the original sperm whale cry train of pulse
A period of time length be T1Cry train of pulse remove, then, then by combined detection and signal of communication s3(t) it is placed to and is moved
The length removed is T1Cry train of pulse where position, form train of pulse s4(t)；For example, can will be in Fig. 1 (d) in dotted line frame
It calls train of pulse to remove, is then placed in the combined detection in Fig. 1 (c) where removed cry train of pulse with signal of communication
Position, and form the train of pulse in Fig. 1 (e)；Further, by combined detection and signal of communication s3(t) it is placed to original
It calls in train of pulse, is to pretend combined detection and signal of communication s using original cry train of pulse3(t), enemy is induced
It goes combined detection and signal of communication s3(t) be categorized into whale cry and realize detection with communicate it is hidden；
Further, the execution flow of the above-mentioned combined detection using whale sound and signal of communication building method can be described as
Under：
(1) the communication burst generator 2 in Fig. 2 takes out pulse from cry pulse library KU2, then, according to be transmitted
Communication data, and according to the above-mentioned coding method using the time difference, generate communication burst s2(t)；
(2) according to the needs of actual detection target, Sonar Signal generator 7 generates Sonar Signal s1(t)；
(3) combined detection receives with signal of communication generator 3 and is transmitted through the communication come from communication burst generator 2 respectively
Train of pulse s2(t) and reception is transmitted through the Sonar Signal s come from Sonar Signal generator 71(t), then, by the two signals into
The corresponding addition processing of row, obtains combined detection and signal of communication s3(t)；Masking signal generator 4 is called from original sperm whale
One section of original sperm whale cry string is randomly taken out in string 6, then using combined detection and signal of communication generator 3 be transmitted through come
Combined detection and signal of communication s3(t) the cry string for replacing same time length in original sperm whale cry string, forms arteries and veins
Punching string s4(t)；Further, train of pulse s4(t) launched by signal projector；
Second step：Include two aspects using the combined detection and signal of communication treatment technology of whale sound, the first aspect is
Signal processing of sonar technology, the second aspect are signal of communication treatment technology；
It is Signal processing of sonar technology first：
The combined detection being reflected back by submarine target and signal of communication 9, are connect by the signal receiver 8 on sonar contact platform
After receipts, the whale in high band is filtered by a low-pass filter 10 and calls pulse, then obtains the waveform 11 in Fig. 4, it should
Waveform obtains the distance of submarine target and the estimated value of speed parameter after distance and speed estimator 12 are handled；
Followed by signal of communication treatment technology：
Low-pass filter 14 is first passed around by the combined detection that subsurface communication receiving platform receives with signal of communication 13 to filter
The whale cry pulse for falling high band, then obtains waveform 17, then, it is determined that the time duration T of waveform 171(namely sound
Signal s1(t) time span T1) and period for occurring, it is right by high-pass filter 15 on the basis of this period
The combined detection received carries out high-pass filtering with signal of communication 13, filters the Sonar Signal in low-frequency range, obtains in height
The cry train of pulse 16 of frequency range, that is, communication burst 16, then, then by communication burst 16 be sent into communication decoder 18 into
Row decoding process, to decode the communication information.
Further, due to Sonar Signal s1(t) and communication burst s2(t) combined detection can be combined into and communicate letter
Number s3(t) emitted afterwards with a signal projector, thus it is possible to solve Sonar Signal simultaneously using a unified transmitter
With the transmitting problem of signal of communication, the utilization rate of flat pad hardware system is improved；
Further, due in combined detection and signal of communication s3(t) front and back all adds original sperm whale cry
String realizes true Sonar Signal and communication burst so be used as blindage by using original sperm whale cry string
It is hidden；
Further, the ingenious corresponding addition for calling pulse with sperm whale by Sonar Signal is handled, and realizes theirs
It has the right to merge；By the combination of high band filter and low-pass filter, their separation is easily realized.
Claims (6)
1. a kind of combined detection and communication means using whale sound, characterized in that steps are as follows：
The first step：It is as follows using the combined detection and signal of communication building method of whale sound：
First, it is T to generate a time duration1, initial frequency f1, termination frequency be f2Sonar Signal s1(t), so
Afterwards, this linear FM signal s is utilized1(t) it is used as Sonar Signal, realizes the active probe of submarine target；
Another is formed with M2The cry pulse library KU2 of a cry pulse；
Further, the time difference between cry pulse in the cry pulse library of two cry pulses is utilizedCarry out communication two into
Number encoder processed；More specifically, when one call pulse central instant and another cry pulse central instant between when
Between difference beWhen, this time differenceRepresent communication binary number " 0 "；And the central instant of a cry pulse is named with another
Time difference between the central instant of ping isWhen, this time differenceRepresent communication binary number " 1 "；According to upper
Encoding law is stated, communication burst s can be formed using a series of cry pulses2(t), the transmission of the communication information is realized；
Further, by above-mentioned Sonar Signal s1(t) with communication burst s2(t) signal waveform carries out corresponding addition processing, so
Afterwards, combined detection and signal of communication s are obtained3(t)；
Further, one section of original sperm whale is selected to call train of pulse, by one in the original sperm whale cry train of pulse
Section time span is T1Cry train of pulse remove, then, then by combined detection and signal of communication s3(t) it is placed to removed
Length is T1Cry train of pulse where position, form train of pulse s4(t)；
Second step：Include two aspects using the combined detection and signal of communication treatment technology of whale sound, the first aspect is sonar
Signal processing technology, the second aspect are signal of communication treatment technology；
It is Signal processing of sonar technology first：
The combined detection and signal of communication being reflected back by submarine target, after being received by the signal receiver on sonar contact platform,
The whale in high band is filtered by a low-pass filter and calls pulse, then obtains waveform, obtained waveform is through distance
After speed estimator processing, the distance of submarine target and the estimated value of speed parameter are obtained；
Followed by signal of communication processing step：
Low-pass filter is first passed around with signal of communication by the combined detection that subsurface communication receiving platform receives and filters high band
Whale call pulse, waveform is then obtained, then, it is determined that the time duration T of waveform1, that is, Sonar Signal s1(t)
Time span and the period occurred, on the basis of this period, by high-pass filter to the combined detection that receives
High-pass filtering is carried out with signal of communication, filters the Sonar Signal in low-frequency range, obtains the cry train of pulse in high band,
It is exactly communication burst, then, then communication burst is sent into communication decoder and is decoded processing, decodes communication letter
Breath.
2. utilizing the combined detection and communication means of whale sound as described in claim 1, characterized in that Sonar Signal s1It (t) can be with
It is pure-tone pulse signal, linear FM signal or Hyperbolic Frequency Modulation signal.
3. utilizing the combined detection and communication means of whale sound as described in claim 1, characterized in that further, for side
Notelet receiving platform detaches Sonar Signal and communication burst, so, it is desirable that f2Meet following require：f2＜ fT。
4. utilizing the combined detection and communication means of whale sound as described in claim 1, characterized in that further, from original
Sperm whale cry string in singly intercept out each cry pulse, then, each cry pulse returns itself
One change is handled, and finally, with all cry pulse shapings after normalized, one has M1The cry arteries and veins of a cry pulse
Rush library KU1；Further, energy spectrum analysis is carried out to cry pulse each of in cry pulse library KU1, calculates each cry arteries and veins
The total energy value E of punching1；Then, a frequency threshold f is setT, each cry pulse is calculated in frequency threshold fTFrequencies above section
Energy value E2；Then, then E is sought2With E1Ratio R1；If R1＞ 0.7 then retains corresponding cry pulse；, whereas if
R1＜ 0.7 then removes corresponding cry pulse；Further, with another tool of all cry pulse shapings remained
There is M2The cry pulse library KU2 of a cry pulse；
Further, original sperm whale cry string refers to calling string by the sperm whale that sound recording apparatus is recorded；
Further,Certainly it is required to be much smaller than linear FM signal s1(t) time duration T1, andIt can be according to communication
The requirement of speed and be adjusted, when communication speed require it is higher when,What should be set is smaller, and works as communication speed
It is required that when lower,What should be set is larger；Specific size should be adjusted according to actual communication speed demand
It is whole.
5. utilizing the combined detection and communication means of whale sound as described in claim 1, characterized in that specific in an example
Step is：
(1) communication burst generator takes out pulse from cry pulse library KU2, then, according to communication data to be transmitted, and
According to the above-mentioned coding method using the time difference, communication burst s is generated2(t)；
(2) according to the needs of actual detection target, Sonar Signal generator generates Sonar Signal s1(t)；
(3) combined detection receives with signal of communication generator and is transmitted through the communication burst come from communication burst generator respectively
s2(t) and reception is transmitted through the Sonar Signal s come from Sonar Signal generator1(t), the two signals then, are subjected to corresponding phase
Add processing, obtains combined detection and signal of communication s3(t)；Masking signal generator is called in string randomly from original sperm whale
Take out one section of original sperm whale cry string, then using combined detection and signal of communication generator be transmitted through the combined detection come and
Signal of communication s3(t) the cry string for replacing same time length in original sperm whale cry string, forms train of pulse s4(t)；Into one
Step ground, train of pulse s4(t) launched by signal projector.
6. a kind of combined detection and communication device using whale sound, characterized in that transmitting terminal is by the cry pulse library that is sequentially connected
Memory, communication burst generator, combined detection and signal of communication generator, masking signal generator, signal projector, sound
Signal generator；
Communication burst generator is used to utilize the time difference between two cry pulsesCarry out communication binary number coding；Tool
Body, it is when the time difference between the central instant and the central instant of another cry pulse of a cry pulseWhen, this
Time differenceRepresent communication binary number " 0 "；And when the central instant of a cry pulse and the center of another cry pulse
Time difference between quarter isWhen, this time differenceRepresent communication binary number " 1 "；According to above-mentioned encoding law, energy
Communication burst s is formed using a series of cry pulses2(t), by communication burst s2(t) it is sent to combined detection and communicates
Signal generator；
Combined detection is used for signal of communication generator will be from the Sonar Signal s of Sonar Signal generator1(t) and communication pulse
String s2(t) signal waveform carries out corresponding addition processing, then, obtains combined detection and signal of communication s3(t)；
Masking signal generator randomly takes out one section of original sperm whale from original sperm whale cry string and calls string, then
It is transmitted through the combined detection come and signal of communication s using combined detection and signal of communication generator3(t) original sperm whale is replaced to cry
The cry string of same time length in sound string forms train of pulse s4(t)；Train of pulse s4(t) launched by signal projector；
Receiving terminal is by signal receiver, low-pass filter, distance and the speed estimator, high-pass filter, communication that are sequentially connected
Decoder is constituted；
The combined detection and signal of communication being reflected back by submarine target, after being received by the signal receiver on sonar contact platform,
The whale in high band is filtered by a low-pass filter and calls pulse, then obtains waveform, the waveform is through distance and speed
After estimator processing, the distance of submarine target and the estimated value of speed parameter are obtained；
Combined detection first passes around the whale cry pulse that low-pass filter filters high band with signal of communication, and then determination obtains wave
The time duration T of shape1With the period occurred, T1Namely Sonar Signal s1(t) time span, with this time
On the basis of section, high-pass filtering is carried out with signal of communication to the combined detection received by high-pass filter, is filtered in low frequency
The Sonar Signal of section, obtains the cry train of pulse in high band, that is, communication burst, then, then by communication burst
It is sent into communication decoder and is decoded processing, to decode the communication information.
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