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步进频雷达关键参数对虚警信号的影响分析

杜雪 魏光辉 吴大林

杜雪, 魏光辉, 吴大林. 步进频雷达关键参数对虚警信号的影响分析[J]. 强激光与粒子束. doi: 10.11884/HPLPB202436.240072
引用本文: 杜雪, 魏光辉, 吴大林. 步进频雷达关键参数对虚警信号的影响分析[J]. 强激光与粒子束. doi: 10.11884/HPLPB202436.240072
Du Xue, Wei Guanghui, Wu Dalin. Analysis of the influence of key parameters of step-frequency radar on false alarm signal[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202436.240072
Citation: Du Xue, Wei Guanghui, Wu Dalin. Analysis of the influence of key parameters of step-frequency radar on false alarm signal[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202436.240072

步进频雷达关键参数对虚警信号的影响分析

doi: 10.11884/HPLPB202436.240072
基金项目: 国防基础科研重点项目(50909030201);重点实验室基金资助项目(6142205200301)
详细信息
    作者简介:

    杜 雪,duxue_xdd@163.com

    通讯作者:

    魏光辉,wei-guanghui@sohu.com

  • 中图分类号: TN97

Analysis of the influence of key parameters of step-frequency radar on false alarm signal

  • 摘要: 为掌握雷达装备关键参数对虚警信号的影响规律,揭示虚警信号产生的本质原因,针对雷达装备在复杂电磁干扰中出现的多虚警信号问题,以某型步进频雷达为受试对象,理论阐明虚警干扰的作用机理和虚警目标的成像特征。理论与试验测定相结合,选取单频连续波为电磁干扰源,采用注入等效替代电磁辐射的试验方法,总结归纳雷达关键参数跳频间隔和频率步进对虚警信号影响规律。结果表明:受试雷达在单频电磁干扰作用下会产生能量较集中的虚警信号;受试雷达频率步进选取10 kHz、跳频时间0.05 ms时,虚警电平随干扰频偏的变化规律较稳定,信号幅度损失较小,该参数取值可作为控制参数的最优取值,依据该结果能够为后续开展雷达装备在多频电磁环境下的试验评估提供技术支撑。
  • 图  1  雷达电磁注入系统连接图

    Figure  1.  Block diagram of field configuration

    图  2  被测雷达终端控制软件

    Figure  2.  Test radar rerminal control software

    图  3  单频干扰目标距离成像

    Figure  3.  Single frequency interference target range imaging

    图  4  跳频间隔选取不同时虚警信号成像

    Figure  4.  Imaging of false alarm signal with different frequency hopping time

    图  5  不同跳频间隔下虚警电平测试结果

    Figure  5.  Test results of false alarm level under different frequency hopping intervals

    表  1  不同干扰强度下虚警信号测试数据

    Table  1.   Test data of false alarm signal under different interference strengths

    E1=6 dBV/m E2=17.5 dBV/m
    U1/dBmV R1/m U2/dBmV R2/m
    19.12 4506.0 20.70 4586.0
    19.10 3330.0 20.80 2756.0
    19.13 2769.0 20.73 3580.0
    19.12 1384.0 20.68 2860.0
    19.13 633.7 20.73 932.9
    19.12 3256.0 20.70 3456.0
    19.10 3344.0 20.66 3243.0
    19.12 1819.0 20.70 2016.0
    19.13 783.7 20.71 689.3
    19.00 1123.0 20.68 4586.0
    下载: 导出CSV

    表  2  虚警信号测试数据 (E1=20.6 dBV/m)

    Table  2.   False alarm signal test data (E1=20.6 dBV/m)

    tr/ms n Uj/dBmV R/m ΔR
    0.05 1 24.67 2077.0 /
    0.04 4 18.5 419.2 ΔR1=1519.8
    18.5 1939.0 ΔR2=1517.0
    18.3 3456.0 ΔR3=1490.0
    18.4 4946.0 ΔR≈1508.0
    0.03 3 19.2 1364.0 ΔR1=1504.0
    19.2 2868.0 ΔR2=1518.0
    19.2 4386.0 ΔR≈1511.0
    0.02 2 19.6 1155.0 ΔR≈1502.0
    19.5 2657.0
    0.01 1 17.7 965.1 /
    下载: 导出CSV

    表  3  虚警信号测试数据(E2=32.6 dBV/m)

    Table  3.   False alarm signal test data (E2=32.6 dBV/m)

    tr/ms n Uj/dBmV R/m ΔR
    0.05 1 24.8 2033.0 /
    0.04 4 18.6 242.9 ΔR1=1499.1
    18.6 1742.0 ΔR2=1503.0
    18.7 3245.0 ΔR3=1494.0
    18.6 4739.0 ΔR≈1498.7
    0.03 3 19.2 713.6 ΔR1=1496.4
    19.3 2210.0 ΔR2=1514.0
    19.2 3724.0 ΔR≈1510.2
    0.02 2 19.4 1402.0 ΔR≈1501.0
    19.5 2903.0
    0.01 1 17.7 553.4 /
    下载: 导出CSV

    表  4  虚警信号测试数据(Δf2=40 MHz)

    Table  4.   False alarm signal test data (Δf2=40 MHz)

    tr/ms n Uj/dBmV R/m ΔR
    0.05 1 21.23 1983.0 /
    0.04 4 14.6 500.9 ΔR1=1498.1
    14.8 1999.0 ΔR2=1503.0
    14.9 3502.0 ΔR3=1495.0
    14.6 4997.0 ΔR≈1498.7
    0.03 3 14.8 609.6 ΔR1=1493.7
    15.0 2103.0 ΔR2=1497.0
    15.0 3600.0 ΔR≈1495.4
    0.02 2 15.0 383.9 ΔR≈1504
    15.1 1888.0
    0.01 1 13.2 499.4 /
    注:表中ΔR1、ΔR2、ΔR3分别代表出现多虚警目标时,第n个和第n+1个(n=1,2,3)之间的间隔,ΔR表示对间隔取平均。
    下载: 导出CSV

    表  5  虚警信号测试数据(Δf *=10 kHz,Δf1=0 MHz)

    Table  5.   False alarm signal test data (Δf *=10 kHz,Δf2=−0 MHz)

    tr/ms n ΔR/m E1=17.6(dBV/m) E1=20.6(dBV/m) E1=26.6(dBV/m)
    U1/dBmV
    0.05 1 / 20.7 20.9 21.1
    0.04 2 3000 16.9 17.3 17.1
    0.03 3 1500 14.7 14.9 14.8
    0.02 1 / 18.2 18.1 18.4
    0.01 1 / 13.9 13.7 13.9
    下载: 导出CSV

    表  6  虚警信号测试数据(Δf *=10 kHz,Δf2=−60 MHz)

    Table  6.   False alarm signal test data (Δf *=10 kHz,Δf2=−60 MHz)

    tr/ms n ΔR/m E2=17.6(dBV/m) E2=20.6(dBV/m) E2=26.6(dBV/m)
    U2/dBmV
    0.05 1 / 17.1 17.2 17.4
    0.04 2 3000 13.6 13.7 13.8
    0.03 3 1500 11.2 10.7 11.1
    0.02 1 / 14.0 14.4 14.6
    0.01 1 / 9.3 9.8 10.5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-03-03
  • 修回日期:  2024-05-13
  • 录用日期:  2024-04-30
  • 网络出版日期:  2024-06-25

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