装甲编队无线紫外光隐秘通信的中继选择研究

赵太飞, 李永明, 袁麓. 装甲编队无线紫外光隐秘通信的中继选择研究[J]. 光电工程, 2019, 46(5): 180448. doi: 10.12086/oee.2019.180448
引用本文: 赵太飞, 李永明, 袁麓. 装甲编队无线紫外光隐秘通信的中继选择研究[J]. 光电工程, 2019, 46(5): 180448. doi: 10.12086/oee.2019.180448
Zhao Taifei, Li Yongming, Yuan Lu. Research on relay selection of armored formations wireless UV covert communication[J]. Opto-Electronic Engineering, 2019, 46(5): 180448. doi: 10.12086/oee.2019.180448
Citation: Zhao Taifei, Li Yongming, Yuan Lu. Research on relay selection of armored formations wireless UV covert communication[J]. Opto-Electronic Engineering, 2019, 46(5): 180448. doi: 10.12086/oee.2019.180448

装甲编队无线紫外光隐秘通信的中继选择研究

  • 基金项目:
    国家自然科学基金项目(U1433110);陕西省重点产业链创新计划项目(2017ZDCXL-GY-06-01, 2017ZDCXL-GY-05-03);陕西省教育厅服务地方专项计划项目(17JF024);西安市科学计划项目(CXY1835(4));特殊环境机器人技术四川省重点实验室开放基金(17kftk04)
详细信息
    通讯作者: 赵太飞(1978-),男,博士,教授,主要从事无线光通信与网络方面的研究。E-mail:zhaotaifei@163.com
  • 中图分类号: TN929.1

Research on relay selection of armored formations wireless UV covert communication

  • Fund Project: Supported by National Natural Science Foundation of China(U1433110), Shaanxi Province Key Industrial Chain Innovation Plan Project (2017ZDCXL-GY-06-01, 2017ZDCXL-GY-05-03), Service Local Special Plan Project of Shaanxi Province Education Department (17JF024), Xi'an Science Plan Project (CXY1835(4)), and Open Foundation of Robot Technology Used for Special Environment Key Laboratory of Sichuan Province (17kftk04)
More Information
  • 针对装甲编队在复杂战场环境下的紫外光端到端通信中断问题,多采用中继辅助方式建立协作通信链路,而中继选择是关键问题之一。为了提高编队之间的通信协同能力,在解码转发协议的前提下,结合门限决策思想,提出了一种基于无线紫外光隐秘通信的装甲编队最佳中继选择算法。该算法结合紫外光非直视通信的优点,根据信噪比门限和信道特性的选择策略,对编队进行最佳中继的选择,并在高斯噪声模型下,分析了其误码率性能。仿真结果表明,在根据不同的信噪比环境和中继数来选取适当的协作门限,可获得最佳中继链路,以及在协作通信链路动态变化时,调整中继的接收和发射状态,能有效提高协作中继链路的通信质量。

  • Overview: In the battlefield environment of complex terrain, the use of ultraviolet (UV) communication in armored formations overcomes the shortcomings of cable laying. And due to the strong absorption of atmosphere, UV communication have low identification rate performance, which has better covert transmission performance than other wireless communication modes such as infrared optical communication and radio frequency communication. Because of the serious attenuation of the UV atmospheric channel and high path loss, the end-to-end communication between the formations is easily interrupted, and the receiving end cannot receive the combat missions in time, which affects the combat capability of the formation. In order to improve the cooperative communications ability between the armored formations and the end-to-end communication quality of UV, how to select a reliable single relay node for the cooperative communications system of the UV NLOS (non-line-of-sight) multi-relay parallel link is studied.

    The optimal relay selection algorithm for armored formations based on wireless UV covert communication is proposed on the premise of decode-and-forward protocol, combined with the threshold decision idea. The algorithm combines the advantages of UV NLOS communication. The optimal relay selection is made for the formations according to the signal to noise ratio (SNR) threshold and channel characteristics selection strategy, and the bit error rate (BER) performance is analyzed under Gaussian noise model. It can be seen from the simulation results that the BER performance of the UV cooperative communications system is affected by the threshold, the relay geometry and the relay position. Under the condition of higher signal to noise ratio and fewer candidate relay nodes, the cooperation threshold can be appropriately reduced to improve the system BER performance. Therefore, the algorithm can select appropriate coordination thresholds according to different SNR environments and the number of relay nodes, and select the best relay to establish a UV NLOS relay cooperative communications link. When the relay node selects a narrow transmitter and receiving apex angle as well as a wide receiving FOV, the relay closer to the source node becomes preferable. Therefore, when the cooperative communications link changes dynamically, the receiving and transmitting states of the relay node is adjusted according to the distance from the cooperative relay node to the source node. This enables the cooperative communications system to obtain the best BER performance, enhance the invulnerability of the cooperative communications links, and meet the communication needs of armored formations in complex battlefield environments.

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  • 图 1  装甲编队中紫外光多中继并行链路的协作通信系统模型

    Figure 1.  Cooperative communications system model of UV multi-relay parallel link in armored formation

    图 2  最佳中继选择算法流程图

    Figure 2.  Optimal relay selection algorithm flow char

    图 3  不同传输方案误码率曲线(门限10 dB,N=4)

    Figure 3.  BER curves for different transmission schemes (threshold 10 dB, N=4) armored formation

    图 4  不同门限的误码率曲线(N=4)

    Figure 4.  BER curves for different thresholds (N=4) armored formation

    图 5  中继节点数与误码率的曲线(门限10 dB)

    Figure 5.  The number of relay nodes and the BER curves (threshold 10 dB) armored formation

    图 6  最佳误码率的中继位置曲线。(a)中继接收仰角;(b)中继接收视场角;(c)中继发射仰角

    Figure 6.  Relay location curves with optimal BER. (a) Relay receiving apex angle; (b) Relay receiving FOV; (c) Relay transmitter apex angle

    表 1  系统主要仿真参数

    Table 1.  Main simulation parameters of system

    参数
    紫外波长/nm 260
    发射功率/mW 10
    接收孔径面积/cm2 1.8
    吸收系数/km-1 0.802
    米氏散射系数/km-1 0.284
    瑞利散射系数/km-1 0.266
    βTxS, θTxS, θTxR/(°) 30, 15, 15
    βRxD, θRxD/(°) 40, 60
    数据速率Rc/(kbit·s-1) 1
    下载: 导出CSV

    表 2  θRxR=60°,bTxR=30°不同中继接收仰角的最佳中继位置

    Table 2.  Optimal relay location for different relay receiving apex angle for θRxR=60°, βTxR=30° m

    中继接收仰角/(°) SD=600 SD=800 SD=1000
    30 200 300 400
    40 200 300 300
    45 200 200 300
    60 150 200 300
    下载: 导出CSV

    表 3  βRxR=40°,bTxR=30°不同中继接收视场角的最佳中继位置

    Table 3.  Optimal relay location for different relay receiving FOV for βRxR=40°, βTxR=30° m

    中继接收视场角/(°) SD=600 SD=800 SD=1000
    45 200 200 300
    60 200 300 300
    80 250 300 400
    下载: 导出CSV

    表 4  βRxR=40°, θRxR=60°不同中继发射仰角的最佳中继位置

    Table 4.  Optimal relay location for different relay transmitter apex angle for βRxR=40°, θRxR=60° m

    中继发射仰角/(°) SD=600 SD=800 SD=1000
    30 200 300 300
    40 250 300 400
    45 250 400 400
    60 300 400 500
    下载: 导出CSV
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出版历程
收稿日期:  2018-08-27
修回日期:  2018-10-29
刊出日期:  2019-05-01

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