CN203554473U - Chaotic synchronous control system for secure communication system - Google Patents
Chaotic synchronous control system for secure communication system Download PDFInfo
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- CN203554473U CN203554473U CN201320729493.3U CN201320729493U CN203554473U CN 203554473 U CN203554473 U CN 203554473U CN 201320729493 U CN201320729493 U CN 201320729493U CN 203554473 U CN203554473 U CN 203554473U
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Abstract
A chaotic synchronous control system for a secure communication system is provided. An encoder is arranged in a plaintext message transmitter, and a spread spectrum modulator is connected to the encoder. The encoder is separately connected to an encrypted annunciator and a chaotic sequence generator; the chaotic sequence generator is connected to the encrypted annunciator, a controller and a synchronous chaotic sequence generator; the controller and the synchronous chaotic sequence generator are connected; the encrypted annunciator and the synchronous chaotic sequence generator are separately connected to a decrypting exchanger; a cipher synchronous detector is arranged between the chaotic sequence generator and the synchronous chaotic sequence generator and is connected to the decrypting exchanger at the same time; and the decrypting exchanger is connected to a plaintext message receiver. A spread spectrum decoder is arranged in the plaintext message receiver. Through arrangement of the chaotic sequence generator, the synchronous chaotic sequence generator and an interference observer, uncertain interference on the chaotic system is effectively reduced. A plurality of plaintext signals are recovered after synchronous control is achieved, so that security of a communication system is improved.
Description
Technical field
The utility model relates to Control of Chaotic Synchronization technical field, is specially a kind of Control of Chaotic Synchronization system for secret signalling.
Background technology
Chaotic motion is a kind of deterministic complex nonlinear motion, and certainty refers to that the characteristics of motion can describe with a definite equation, the aperiodicity of the present signal of non-linear table of complexity, pseudo-randomness, local instability but monolithic stability, scope bounded; In the system of many reality, can observe the existence of chaotic motion, on the one hand, when chaos phenomenon produces harm to systems such as Electrical and Electronics, need to it be controlled or be suppressed, on the other hand, due to chaos system, there is the characteristics such as randomness, wide spectrum and initial value sensitiveness, therefore in secret signalling, but have wide potential using value; In communication system, application of chaos system can obtain higher security performance effectively; But due to complexity and the singularity of chaos system and chaos phenomenon, make the research of chaos controlling and application challenging, also make the research and development in this field become the study hotspot of contemporary related discipline.Chaotic Synchronous is one of key technology realizing chaotic secret communication system, improving complexity that chaotic communication system both sides signal list changes, synchronous robustness, synchronous accuracy and dwindle the synchronous needed time, is the key point that improves chaotic communication system total system; Therefore, how to avoid states with time-delay and the uncertain adverse effect of bringing of disturbing, the efficient Chaotic Synchronous of realizing secret signalling has become major issue urgently to be resolved hurrily.
Utility model content
The technical problem that the utility model solves is to provide a kind of Control of Chaotic Synchronization system for secret signalling, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
For a Control of Chaotic Synchronization system for secret signalling, comprise that cleartext information transmitting terminal, spread spectrum modulator, coded signal device, chaos sequence generator, controller, synchronous chaos sequencer, cryptosync detector, decoding interchanger and cleartext information receive terminal, wherein, in cleartext information transmitting terminal, be provided with encoder, spread spectrum modulator is connected with encoder, encoder respectively with coded signal device, chaos sequence generator connects, chaos sequence generator and coded signal device, controller and synchronous chaos sequencer connect, controller is connected with synchronous chaos sequencer, coded signal device is connected with deciphering interchanger respectively with synchronous chaos sequencer, cryptosync detector is arranged between chaos sequence generator and synchronous chaos sequencer, be connected with deciphering interchanger simultaneously, deciphering interchanger receives terminal with cleartext information and is connected, cleartext information receives in terminal and is provided with spread spectrum decoder.
In the utility model, chaos sequence generator is connected by common signal channel with synchronous chaos sequencer, chaos sequence generator and synchronous chaos sequencer produce pseudo random sequence code, cryptosync detector generation cryptosynch judges whether the ciphertext of common signal channel transmission changes, if change, producing one drives signal to be sent to chaos sequence generator to carry out next iteration, send decrypted signal simultaneously to deciphering interchanger; If do not change, cryptosync detector does not carry out any signal transmission; By cryptosync detector, be convenient to realize Control of Chaotic Synchronization, make the pseudo-order symbol distributions of generation even, balance is better, is conducive to improve the synchronous robustness of secret signalling.
In the utility model, the cleartext information data that spread spectrum modulator will be transmitted are modulated with the spreading code of two-forty, utilize the pseudo-randomness of chaos and frequency expansion sequence that ergodic realizes function admirable to realize spread spectrum, the spread spectrum decoder that cleartext information receives in terminal is carried out demodulation to the data message receiving, recover primary data information (pdi), in transmitting procedure, utilize chaos sequence generator and synchronous chaos sequencer to produce pseudo random sequence code, and will expressly embed in pseudo random sequence code, realize expressly and combining together with pseudo random sequence code, avoid expressly floating on chaotic carrier, can effectively eliminate assailant and get around the hidden danger that deciphering chaos circuit directly obtains primary signal, improved the confidentiality of communication system, and Noise Resistance Ability is strong, there is higher recovery precision, thereby improved the accuracy of Control of Chaotic Synchronization, dwindle the synchronous needed time.
In the utility model, controller is active synchronization controller, for the uncertain chaos system with time lag, adopts active synchronization controller, and carries out simulating, verifying, thereby realize Chaotic Synchronous.
In the utility model, spread spectrum modulator adopts Chaotic-Pulse modulation signal not only to can be used as modulation signal and carries digital signal but also can be used as synchronizing signal and make secret signalling synchronous, efficiently solve traditional chaos and cover and require signal power much smaller than the problem of chaotic signal power, experimental results show that and there is stronger anti-noise jamming ability and good robustness.
In the utility model, between chaos sequence generator and synchronous chaos sequencer, be provided with interference observer, by interference observer, approach system interference, and then regulate the parameter of interference observer, estimate interference value, effectively reduce the uncertainty of chaos system and disturb; Simultaneously for time the plaintext signal that becomes, solved the problem that expressly the necessary low frequency of signal could correctly be recovered, and chaos is covered with chaotic modulation technology and combined, during to isostructure, become and postpone chaotic neural network design, after realizing synchronously, can effectively recover expressly signal of hiding multichannel, and then improve the confidentiality of communication system.
Beneficial effect: the utility model is by arranging chaos sequence generator and synchronous chaos sequencer, and between chaos sequence generator and synchronous chaos sequencer, interference observer is set, estimate interference value, effectively reduce the uncertainty of chaos system and disturb; Solved expressly simultaneously signal must low frequency could the correct problem of recovering, and chaos covered combined with chaotic modulation technology, can effectively recover expressly signal of hiding multichannel realizing after synchronous, and then improve the confidentiality of communication system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred embodiment.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to a kind of Control of Chaotic Synchronization system for secret signalling of Fig. 1, comprise that cleartext information transmitting terminal, spread spectrum modulator, coded signal device, chaos sequence generator, controller, synchronous chaos sequencer, cryptosync detector, decoding interchanger and cleartext information receive terminal, wherein, in cleartext information transmitting terminal, be provided with encoder, spread spectrum modulator is connected with encoder, encoder respectively with coded signal device, chaos sequence generator connects, chaos sequence generator and coded signal device, controller and synchronous chaos sequencer connect, controller is connected with synchronous chaos sequencer, coded signal device is connected with deciphering interchanger respectively with synchronous chaos sequencer, cryptosync detector is arranged between chaos sequence generator and synchronous chaos sequencer, be connected with deciphering interchanger simultaneously, deciphering interchanger receives terminal with cleartext information and is connected, cleartext information receives in terminal and is provided with spread spectrum decoder.
In the present embodiment, chaos sequence generator is connected by common signal channel with synchronous chaos sequencer, chaos sequence generator and synchronous chaos sequencer produce pseudo random sequence code, cryptosync detector generation cryptosynch judges whether the ciphertext of common signal channel transmission changes, if change, producing one drives signal to be sent to chaos sequence generator to carry out next iteration, send decrypted signal simultaneously to deciphering interchanger; If do not change, cryptosync detector does not carry out any signal transmission; By cryptosync detector, be convenient to realize Control of Chaotic Synchronization, make the pseudo-order symbol distributions of generation even, balance is better, is conducive to improve the synchronous robustness of secret signalling.
In the present embodiment, the cleartext information data that spread spectrum modulator will be transmitted are modulated with the spreading code of two-forty, utilize the pseudo-randomness of chaos and frequency expansion sequence that ergodic realizes function admirable to realize the expansion of frequency spectrum, the spread spectrum decoder that cleartext information receives in terminal is carried out demodulation to the data message receiving, recover primary data information (pdi), in transmitting procedure, utilize chaos sequence generator and synchronous chaos sequencer to produce pseudo random sequence code, and will expressly embed in pseudo random sequence code, realize expressly and combining together with pseudo random sequence code, avoid expressly floating on chaotic carrier, can effectively eliminate assailant and get around the hidden danger that deciphering chaos circuit directly obtains primary signal, improved the confidentiality of communication system, and Noise Resistance Ability is strong, there is higher recovery precision, thereby improved the accuracy of Control of Chaotic Synchronization, dwindle the synchronous needed time.
In the present embodiment, controller is active synchronization controller, for the uncertain chaos system with time lag, adopts active synchronization controller, and carries out simulating, verifying, thereby realize Chaotic Synchronous.
In the present embodiment, spread spectrum modulator adopts Chaotic-Pulse modulation signal not only to can be used as modulation signal and carries digital signal but also can be used as synchronizing signal and make secret signalling synchronous, efficiently solve traditional chaos and cover and require signal power much smaller than the problem of chaotic signal power, experimental results show that and there is stronger anti-noise jamming ability and good robustness.
In the present embodiment, between chaos sequence generator and synchronous chaos sequencer, be provided with interference observer, by interference observer, approach system interference, and then regulate the parameter of interference observer, estimate interference value, effectively reduce the uncertainty of chaos system and disturb; Simultaneously for time the plaintext signal that becomes, solved the problem that expressly the necessary low frequency of signal could correctly be recovered, and chaos is covered with chaotic modulation technology and combined, during to isostructure, become and postpone chaotic neural network design, after realizing synchronously, can effectively recover expressly signal of hiding multichannel, and then improve the confidentiality of communication system.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. for a Control of Chaotic Synchronization system for secret signalling, comprise that cleartext information transmitting terminal, spread spectrum modulator, coded signal device, chaos sequence generator, controller, synchronous chaos sequencer, cryptosync detector, decoding interchanger and cleartext information receive terminal, it is characterized in that, in cleartext information transmitting terminal, be provided with encoder, spread spectrum modulator is connected with encoder, encoder respectively with coded signal device, chaos sequence generator connects, chaos sequence generator and coded signal device, controller and synchronous chaos sequencer connect, controller is connected with synchronous chaos sequencer, coded signal device is connected with deciphering interchanger respectively with synchronous chaos sequencer, cryptosync detector is arranged between chaos sequence generator and synchronous chaos sequencer, be connected with deciphering interchanger simultaneously, deciphering interchanger receives terminal with cleartext information and is connected, cleartext information receives in terminal and is provided with spread spectrum decoder.
2. a kind of Control of Chaotic Synchronization system for secret signalling according to claim 1, is characterized in that, chaos sequence generator is connected by common signal channel with synchronous chaos sequencer.
3. a kind of Control of Chaotic Synchronization system for secret signalling according to claim 1, is characterized in that, controller is active synchronization controller.
4. a kind of Control of Chaotic Synchronization system for secret signalling according to claim 1, is characterized in that, between chaos sequence generator and synchronous chaos sequencer, is provided with interference observer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320729493.3U CN203554473U (en) | 2013-11-19 | 2013-11-19 | Chaotic synchronous control system for secure communication system |
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| CN201320729493.3U CN203554473U (en) | 2013-11-19 | 2013-11-19 | Chaotic synchronous control system for secure communication system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007159A (en) * | 2015-07-24 | 2015-10-28 | 苏州矗联电子技术有限公司 | Secret key distribution device based on chaotic synchronization |
| CN111884792A (en) * | 2020-06-30 | 2020-11-03 | 深圳市永达电子信息股份有限公司 | System and method for preparing eigen-state network circuit signal based on memristor chaotic sequence |
| CN111917546A (en) * | 2018-07-03 | 2020-11-10 | 太原理工大学 | High-speed secret key secure distribution system and method based on no-periodic chaotic synchronization |
| CN112968849A (en) * | 2021-02-02 | 2021-06-15 | 中国地质大学（武汉） | Chaos-based safety robust radar communication integrated system, control method and medium |
-
2013
- 2013-11-19 CN CN201320729493.3U patent/CN203554473U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007159A (en) * | 2015-07-24 | 2015-10-28 | 苏州矗联电子技术有限公司 | Secret key distribution device based on chaotic synchronization |
| CN111917546A (en) * | 2018-07-03 | 2020-11-10 | 太原理工大学 | High-speed secret key secure distribution system and method based on no-periodic chaotic synchronization |
| CN111884792A (en) * | 2020-06-30 | 2020-11-03 | 深圳市永达电子信息股份有限公司 | System and method for preparing eigen-state network circuit signal based on memristor chaotic sequence |
| CN112968849A (en) * | 2021-02-02 | 2021-06-15 | 中国地质大学（武汉） | Chaos-based safety robust radar communication integrated system, control method and medium |
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| C14 | Grant of patent or utility model | ||
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| 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: 20140416 Termination date: 20161119 |