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直接序列扩频系统抗干扰能力研究

李振东 谭维凤 康成斌 程竟爽

李振东, 谭维凤, 康成斌, 程竟爽. 直接序列扩频系统抗干扰能力研究[J]. 电子与信息学报, 2021, 43(1): 116-123. doi: 10.11999/JEIT191007
引用本文: 李振东, 谭维凤, 康成斌, 程竟爽. 直接序列扩频系统抗干扰能力研究[J]. 电子与信息学报, 2021, 43(1): 116-123. doi: 10.11999/JEIT191007
Zhendong LI, Weifeng TAN, Chengbin KANG, Jingshuang CHENG. Research on Anti-interference Ability of Direct Sequence Spread Spectrum System[J]. Journal of Electronics & Information Technology, 2021, 43(1): 116-123. doi: 10.11999/JEIT191007
Citation: Zhendong LI, Weifeng TAN, Chengbin KANG, Jingshuang CHENG. Research on Anti-interference Ability of Direct Sequence Spread Spectrum System[J]. Journal of Electronics & Information Technology, 2021, 43(1): 116-123. doi: 10.11999/JEIT191007

直接序列扩频系统抗干扰能力研究

doi: 10.11999/JEIT191007
详细信息
    作者简介:

    李振东:男,1983年生,工程师,硕士,研究方向为卫星微波通信、航天器电子与信息系统

    谭维凤:女,1984年生,工程师,硕士,研究方向为卫星测控系统、扩频通信

    康成斌:男,1983年生,高级工程师,博士,研究方向为卫星星间链路、微波通信

    程竟爽:男,1989年生,工程师,博士,研究方向为航天器总体设计

    通讯作者:

    李振东 lizhendong.2009@163.com

  • 中图分类号: TN911.4

Research on Anti-interference Ability of Direct Sequence Spread Spectrum System

  • 摘要:

    在进行扩频系统设计时,有时需要分析系统的抗干扰能力,但现有的文献中关于直接序列扩频系统的抗宽带干扰能力、抗部分频带干扰能力说法不一致,提供的误比特率(BER)公式也互相不一致。该文通过理论推导给出了直接序列扩频系统在宽带干扰、部分频带干扰下更具一般意义的误比特率公式,并通过计算机仿真验证了该公式的正确性。最后利用该文给出的公式对直扩系统的性能随干扰频点、干扰带宽的变化趋势做了分析。

  • 图  1  直接序列扩频发射系统

    图  2  直接序列扩频接收系统

    图  3  宽带干扰示意图

    图  4  伪随机序列的功率谱

    图  5  部分频带干扰示意图

    图  6  J(f)与${S_{{{\rm{c}}_{\rm{r}}}}}\left( f \right)$卷积过程示意图

    图  7  J(f)与${S_{{c_r}}}\left( f \right)$卷积结果示意图

    图  8  宽带干扰仿真结果

    图  9  部分频带干扰仿真结果

    图  10  不同干扰频点对应的误比特率

    图  11  不同干扰带宽对应的误比特率

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出版历程
  • 收稿日期:  2019-12-18
  • 修回日期:  2020-11-15
  • 网络出版日期:  2020-11-19
  • 刊出日期:  2021-01-15

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