一种提高CAPS导航通信融合系统保密性的新方法  

A Novel Method to Enhance Communication Security in the CAPS Integrated System of Navigation and Communication

作　　者：何瑞珠[1,2] 胡正群[1] 崔君霞[1] 裴军[1] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]中国科学院大学,北京100049

出　　处：《天文研究与技术》2015年第1期30-35,共6页Astronomical Research & Technology

基　　金：国家自然科学基金(61001109)资助

摘　　要：根据导航通信融合系统的特点,通过伪随机序列码与混沌序列码的复合得到GC(Gold-Chebyshev)序列码,新序列码克服了混沌序列平衡性差的缺点,满足了系统短码的要求,得到的GC序列具有码组数量几乎无限多和序列线性复杂度好的优点。系统以伪随机跳变的方式更换码序列集合,极大地提升了系统的安全性。对换码模式和系统性能进行实验验证,表明复合新码GC序列采用换码模式易于实现可靠通信,还可以有效提高系统的保密性能。In this paper we propose a novel method based on highly randomly switching code sets to enhance communication security of an integrated system of navigation and communication. A Gold-Chebyshev （GC） sequence constructed in our novel approach can overcome the shortcoming of poor balance performance of a conventional chaotic sequence, by preserving the main advantages of the latter, which are the large code number and high confidentiality. Our proposed secure system can randomly select a code set from a pool of GC code sets. This greatly operations of the system improves the system security performance. We have also carried out simulations of using the MATLAB/Simulink. Our simulations verify the feasibility of applying the novel method in an integrated system of navigation and communication.

关 键 词：导航通信 保密通信 换码 导航通信融合系统 

分 类 号：TN927[电子电信—通信与信息系统]