Optical chaotic secure algorithm based on space laser communication

Ruiqiang Guo; Lu Song

doi:10.3934/dcdss.2019093

Article Contents

2019, Volume 12, Issue 4&5: 1355-1369. Doi: 10.3934/dcdss.2019093 open access

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Optical chaotic secure algorithm based on space laser communication

Ruiqiang Guo^1,2, and
Lu Song^1, ,

1.
College of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
2.
College of Humanities & Information, Changchun University of Technology, Changchun, China

* Corresponding author: Lu Song
* Corresponding author: Lu Song

Received: May 31, 2017

Revised: October 31, 2017

Published: March 2019

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Abstract

The traditional drive response synchronization control method has the poor robustness, which results in the low security performance of the optical chaotic secure communication. To address this problem, an optical chaotic secure algorithm based on space laser communication is proposed in this paper. With the advantage of space laser communication and full consideration of the influence of complex environment on signal transmission of laser wireless communication, a laser wireless communication channel model is built. Based on this, a hybrid self-synchronization chaotic system model is proposed. It can reduce the information needed for transmission, and only need to transmit a small amount of error correction signals on the channel to achieve synchronization of the receiving and the transmitting system, which greatly suppress the drawback of the traditional method. On the basis of chaotic synchronization, the erbium-doped fiber laser is used for information transmission. Different encryption techniques are used to achieve optical chaotic secure communication within the allowable range of error. Numerical simulation results show that the proposed algorithm has good security and robustness, and can realize the secure communication for different signals.

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Mathematics Subject Classification: 78A60.

Citation:

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Figure 1. Optical chaotic self-synchronization model based on space laser communication

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Figure 2. Optical chaotic secure communication structure based on erbium-doped fiber single-ring laser

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Figure 3. Optical chaotic secure communication structure based on erbium-doped fiber double-ring laser

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Figure 4. Time history of drive signal

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Figure 5. Test result of sinusoidal signal secure communication

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Figure 6. Test result of square wave signal secure communication

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