A Secure Transmission Scheme for Satellite Communications Based on Hybrid Carrier and Chaotic Phase Scrambling

doi:10.7652/xjtuxb201712007

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A Secure Transmission Scheme for Satellite Communications Based on Hybrid Carrier and Chaotic Phase Scrambling

更新时间：2025-07-09

- A Secure Transmission Scheme for Satellite Communications Based on Hybrid Carrier and Chaotic Phase Scrambling
- Vol. 51, Issue 12, Pages: 42-48(2017)
- 作者机构：
  
  空军工程大学信息与导航学院,西安,710077
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201712007
  CLC： TN92
- Online First：10 December 2017，
  
  Published：2017
- 稿件说明：
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A Secure Transmission Scheme for Satellite Communications Based on Hybrid Carrier and Chaotic Phase Scrambling[J]. 2017, 51(12): 42-48.
DOI：

A Secure Transmission Scheme for Satellite Communications Based on Hybrid Carrier and Chaotic Phase Scrambling[J]. 2017, 51(12): 42-48. DOI： 10.7652/xjtuxb201712007.

摘要

针对卫星通信信号在传输过程中易被截获的问题

提出一种混合载波混沌相位扰码(HC-Logistic)传输方案。首先将信号源在基带上进行QPSK映射

映射所得信号经过加权类分数阶傅里叶变换处理后

再将该信号与Logistic映射产生的混沌相位扰码结合

得到最终的基带加密信号; 最后将信号经数模转换和上变频过程后送入卫星信道。仿真结果表明

信号经HC-Logistic方案加密

星座图的特征难以识别

且由于Logistic映射具有初值敏感性

截获该方案所需的计算代价是传统加权类分数阶傅里叶变换的10

倍。

Abstract

A transmission scheme based on hybrid carrier logistic phase scrambling(HC-Logistic)is proposed for the problem that signals are easily intercepted during satellite communication transmission. Firstly

signal sources are mapped on the baseband using QPSK mapping

and the resulting signals are then processed by the weighted fractional Fourier transform. Then

the signals are further combined with the chaotic phase scrambling codes generated by the Logistic map to obtain final baseband encryption signals. Finally

the resulting signals are processed by a digital-analog conversion and an up-conversion and then sent into the satellite channel. Simulation results show that the signals' characteristics of the constellation are difficult to be identified after encrypting by the HC-Logistic scheme. Moreover

since Logistic map is s

ensitive to the initial

the computational cost of intercepting HC-Logistic scheme is 10

times of that of the traditional weighted fractional Fourier transform scheme.

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references

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