CN207976580U - A kind of undersea detection Sonar system based on Du Fen chaos systems - Google Patents
A kind of undersea detection Sonar system based on Du Fen chaos systems Download PDFInfo
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- CN207976580U CN207976580U CN201721776729.3U CN201721776729U CN207976580U CN 207976580 U CN207976580 U CN 207976580U CN 201721776729 U CN201721776729 U CN 201721776729U CN 207976580 U CN207976580 U CN 207976580U
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Abstract
The utility model discloses a kind of undersea detection Sonar systems based on Du Fen chaos systems, it includes sonar transmitting module, sonar receiving module, processor module, chaotic signal detection circuit module and signal processing module, sonar transmitting module connects sonar receiving module, sonar receiving module connection processing device module, processor module connects chaotic signal detection circuit module, connect chaotic signal detection circuit Module connection signal processing module, chaotic signal detection circuit module includes power supply end module, signal input part module, amplification and integrating circuit module, multiplier circuit module, feedback amplifier module and reference signal input module, a kind of undersea detection Sonar system based on Du Fen chaos systems of the utility model, it is strong with anti-noise jamming ability, high sensitivity, the advantages of good concealment.
Description
Technical field
The utility model is related to sonar communication field more particularly to a kind of undersea detection sonars based on Du Fen chaos systems
System.
Background technology
Underwater sonar contact mainly has bluish-green laser sonar, optical fiber sonar, acoustic-optio coupling sonar, synthetic aperture sound both at home and abroad
, the methods of MIMO sonar contacts, these methods are based on laser doppler detection water surface vibration, obtain underwater sound field letter
Breath completes underwater signal detection, realizes the conversion of sound-optical signal.
In comparison, the underwater signal detection technique in China is largely active sonar contact method, although relatively smart
Standard, but expose self-position in the presence of while emitting signal.
Currently, underwater signal intelligent detector also constantly update research and develop in, ripe product it is existing be applied to practical work
Cheng Zhong, but majority is all that target is found from the numerous and disorderly noise jamming on screen using sonar personnel, and some frequencies are excessively high to water
Raw biology can cause relative influence, and the exclusion to noise jamming is difficult to meet actual requirement.
It is known that the mutual collision between object vibration and object makes a sound generation sound wave, sound wave can be in solid, liquid
Or it is propagated in gas.The speed that sound wave is propagated in air is 340m/s, but spread speed can reach 1500m/s in water, is led to
Often, realize that underwater signal detection, first sonar actively emit sound wave shock target, then receive target in water using active sonar
The echo-signal of reflection can measure the parameter of target with the echo parameter and time that receive echo signal.Sound wave is sent out echo
Continuous high frequency noise inputs chaos system as signal source in signal, is determined whether change by the phase path of system
Target exists.Sound wave is propagated in water with the small, characteristic of propagation distance farther out of loss.So longer-distance mesh can be measured
Mark, to avoid enemy's close attack in military energy.
Chaos system has sensitive to small signal to noise like characteristic, and Du Fen chaos systems have low frequency and narrow bandwidth characteristic,
It is sensitive to periodic signal and to noise have stronger immunity.Therefore this patent using Du Fen chaos systems realize to weak signal into
Row detection.Design be based on the underwater sonar detection system of Du Fen chaos systems, System core technology be chaotic signal detection and
Analyzing processing.The features such as system can be detected to hiding the signal in noise, and received signal to noise ratio is low, and concealment is high.Du Fen
Equation is as follows
In formula, k is damping ratio；A is period driving force amplitude；W is driving force angular frequency.
Chaos detection method has high small signal susceptibility and all has extremely strong be immunized to any zero mean noise
The characteristic of power, this feature determine that chaos detection method can be applied under COMPLEX MIXED noise background and Low SNR
The detection of lower small-signal, a key property of chaos system are the exquisite sensitivities to primary condition, as long as by tested letter
It number is added in a chaos system extremely sensitive to signal, so that it may cause the dynamic behavior of the chaos system that great change occurs
Change.
During underwater progress sonar contact, due to noise and underwater noise caused by sonar contact device body itself
Mutually mix, the weak signal to be detected can be submerged in noise.Hybrid dynamic system to the small signal of the Weak frequency of input extremely
Sensitivity, when chaos system receives small-signal, entire chaos system track can find changing.And due to chaotic signal
Characteristic with noise like makes signal hiding in noise when emitting Weak Sinusoidal Signal, it is not easy to be cut by counterreconnaissance side
It obtains.According to these characteristic, the underwater sonar detection system of Du Fen chaos systems is based on using sonar contact Technology design one kind, it should
System acquires the echo-signal sent out under water by active sonar in real time by sensor progress.It is carried out by Lyapunov index method criterions
Chaos system monitors, when occurring weak signal in echo-signal.Alarm signal can then be sent out.
The technology detected both at home and abroad for underwater signal at present, there is sonar technology, bluish-green laser technology, magnetic spy technology and light
Power technology etc., but the loss of these methods is big, accuracy is not high, concealment is poor, and the interference that signal noise detects it is larger.
Utility model content
The purpose of this utility model is that providing a kind of water based on Du Fen chaos systems in view of the deficiencies of the prior art
The advantages of lower detection Sonar system, the strong, high sensitivity with anti-noise jamming ability, good concealment.
A kind of undersea detection Sonar system based on Du Fen chaos systems, it includes sonar transmitting module, sonar reception mould
Block, processor module, chaotic signal detection circuit module and signal processing module, the sonar transmitting module connection sonar receive
Module, the sonar receiving module connection processing device module, the processor module connect chaotic signal detection circuit module, institute
Connection chaotic signal detection circuit Module connection signal processing module is stated, the chaotic signal detection circuit module includes feeder ear
Module, signal input part module, amplification and integrating circuit module, multiplier circuit module, feedback amplifier module and benchmark
Signal input part module, the power supply end module are sequentially connected signal input part module, amplification and integrating circuit module, multiplier
Circuit module, feedback amplifier module and reference signal input module, the signal input part module and amplification and integral
Circuit module connects, and the amplification and integrating circuit module are connect with multiplier circuit module, the multiplier circuit module point
It is not connect with reference signal input module and feedback amplifier module, the feedback amplifier module and signal input part
Module connects.
Further, the sonar transmitting module transmitting signal is Low Frequency Sine Signals.
Further, described that acoustical signal is converted to by electric signal by processor module.
A kind of undersea detection Sonar system based on Du Fen chaos systems of the utility model has anti-noise jamming ability
By force, the advantages of high sensitivity, good concealment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the chaotic signal detection circuit module of the utility model；
In figure：1, sonar transmitting module；2, sonar receiving module；3, processor module；4, chaotic signal detection circuit mould
Block；5, signal processing module；41, power supply end module；42, signal input part module；43, amplification and integrating circuit module；44, multiply
Adder circuit module；45, feedback amplifier module；46, reference signal input module.
Specific implementation mode
The utility model is described further with reference to embodiment, but is not limited to the content on specification.
As shown in the figure：A kind of undersea detection Sonar system based on Du Fen chaos systems, it include sonar transmitting module 1,
Sonar receiving module 2, processor module 3, chaotic signal detection circuit module 4 and signal processing module 5, sonar transmitting module 1
Sonar receiving module 2,2 connection processing device module 3 of sonar receiving module are connected, processor module 3 connects chaotic signal detection electricity
Road module 4,4 connection signal processing module 5 of connection chaotic signal detection circuit module.
Using the sonar transmitting module 1 of Low Frequency Sine Signals, chaos system can be both driven, signal can also be made to be submerged in
Mix noise under water, using noise like, signal is made to be not easy to be found.Echo-signal passes through sonar receiving module 2, is sent to processing
Acoustical signal is converted to electric signal by processor module 3, is conveyed into horizontal electrical signal preliminary treatment, then by electric signal by device module 3
It is detected to chaotic signal detection circuit module 4, the sinusoidal weak signal of sonar transmitting module 1 drives entire chaos system to be in big ruler
The period state of degree, after signal is delivered to chaotic signal detection circuit module 4 by sonar receiving module 2, chaotic signal detection
Trail change will occur for circuit module 4, become chaos state by great scale period state, reach essence using signal processing module 5
Really detection.
Chaotic signal detection circuit module 4 includes power supply end module 41, signal input part module 42, amplification and integrating circuit
Module 43, multiplier circuit module 44, feedback amplifier module 45 and reference signal input module 46, end module 41 of powering
It is sequentially connected signal input part module 42, amplification and integrating circuit module 43, multiplier circuit module 44, feedback amplifier mould
Block 45 and reference signal input module 46, the signal input part module 42 connect with amplification and integrating circuit module 43, put
It is big to be connect with multiplier circuit module 44 with integrating circuit module 43, multiplier circuit module 44 respectively with reference signal input
Module 46 and feedback amplifier module 45 connect, and feedback amplifier module 45 is connect with signal input part module 42.
Power supply end module 41 provides power supply for entire chaos system, and signal input part module 42 receives measured input letter
Number, signal amplifies sinusoidal periodic signal by amplification and integrating circuit module 43, using multiplier circuit module 44 to input
Signal is multiplied with the reference signal that reference signal input module 46 inputs, by feedback amplifier module 45 by output signal
It is recycled to reference signal input module 46, forms chaotic output after Oscillatory Coupling.If input signal and reference signal
Input is same frequency signal, then the state of output end is exactly chaos, if frequency differs, output signal is exactly non-chaotic
State detects the state of acoustic vibration signal in this way.
A kind of undersea detection Sonar system based on Du Fen chaos systems of the utility model has anti-noise jamming ability
By force, the advantages of high sensitivity, good concealment.
Obviously, the above embodiment of the utility model is only intended to clearly illustrate the utility model example,
And it is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, it is stated upper
It can also be made other variations or changes in different ways on the basis of bright.Here all embodiments can not be given thoroughly
It lifts.It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
Protection domain row.
Claims (3)
1. a kind of undersea detection Sonar system based on Du Fen chaos systems, it is characterised in that：It includes sonar transmitting module
(1), sonar receiving module (2), processor module (3), chaotic signal detection circuit module (4) and signal processing module (5), institute
State sonar transmitting module (1) connection sonar receiving module (2), sonar receiving module (2) the connection processing device module (3), institute
Processor module (3) connection chaotic signal detection circuit module (4) is stated, the connection chaotic signal detection circuit module (4) is even
Signal processing module (5) is connect, the chaotic signal detection circuit module (4) includes power supply end module (41), signal input part mould
Block (42), amplification and integrating circuit module (43), multiplier circuit module (44), feedback amplifier module (45) and benchmark letter
Number input end module (46), the power supply end module (41) be sequentially connected signal input part module (42), amplify and integrating circuit
Module (43), multiplier circuit module (44), feedback amplifier module (45) and reference signal input module (46), it is described
Signal input part module (42) with amplification and integrating circuit module (43) connect, it is described amplify and integrating circuit module (43) with multiply
Adder circuit module (44) connect, the multiplier circuit module (44) respectively with reference signal input module (46) and feedback
Amplification circuit module (45) connects, and the feedback amplifier module (45) connect with signal input part module (42).
2. a kind of undersea detection Sonar system based on Du Fen chaos systems according to claim 1, it is characterised in that：Institute
It is Low Frequency Sine Signals to state sonar transmitting module (1) transmitting signal.
3. a kind of undersea detection Sonar system based on Du Fen chaos systems according to claim 1, it is characterised in that：Institute
It states processor module (3) and acoustical signal is converted into electric signal.
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| CN201721776729.3U CN207976580U (en) | 2017-12-19 | 2017-12-19 | A kind of undersea detection Sonar system based on Du Fen chaos systems |
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| CN201721776729.3U CN207976580U (en) | 2017-12-19 | 2017-12-19 | A kind of undersea detection Sonar system based on Du Fen chaos systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169754A (en) * | 2017-12-19 | 2018-06-15 | 北京富迪广通科技发展有限公司 | A kind of undersea detection Sonar system based on Du Fen chaos systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169754A (en) * | 2017-12-19 | 2018-06-15 | 北京富迪广通科技发展有限公司 | A kind of undersea detection Sonar system based on Du Fen chaos systems |
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