| 卫星隐蔽信号波形设计与仿真 |
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| 引用本文： | 何其恢,朱立东.卫星隐蔽信号波形设计与仿真[J].无线电通信技术,2019(1):24-29. |
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| 作者姓名： | 何其恢 朱立东 |
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| 作者单位： | 1.电子科技大学通信抗干扰技术国家级重点实验室 |
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| 基金项目： | 国家自然科学基金项目(61871422);通信网信息传输与分发技术重点实验室开放课题(KX172600032) |
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| 摘 要： | 由于谱分析技术的出现和成熟,传统直接序列扩频系统无法满足机密信号传输的安全性要求。针对这一问题,从改变扩频码周期平稳特性入手,对传统直扩系统进行改造。详细介绍了跳码扩频技术和大信号隐蔽技术,并结合这2种技术提出了一种新的波形设计方法,在不同的参数下对设计波形的抗截获性能进行仿真,并与传统直扩系统进行对比,仿真结果表明具有抗截获性能上的提高。
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| 关 键 词： | 直接扩频系统 大信号隐蔽技术 跳码扩频 抗截获性能 |
Design and Simulation of Satellite Covert Signal Waveform |
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| HE Qihui,ZHU Lidong.Design and Simulation of Satellite Covert Signal Waveform[J].Radio Communications Technology,2019(1):24-29. |
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| Authors: | HE Qihui ZHU Lidong |
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| Affiliation: | (National Key Laboratory of Science and Technology on Communications of UESTC,Chengdu 611731,China) |
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| Abstract: | Due to the maturity of spectrum analysis technology,the traditional direct sequence spread spectrum systems cannot meet the security requirements of signal transmission.In order to resolve this problem,the traditional direct expansion system is modified by changing the period-stable characteristics of the spreading code.This paper introduces in detail the hopping code spread spectrum technology and large signal concealment technology.Combining with these two techniques,a new waveform design method is proposed,and the anti-interception performances of the design waveform are simulated under different parameters and compared with that of traditional system.The simulation results show that the design system has the improvement in anti-interception performance compared to the traditional system. |
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| Keywords: | direct sequence spectrum system jump code spread spectrum large-signal concealment technique antiinterceptperformance |
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