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相控阵近场初始相位快速实时校准方法

辛灿伟 胡岸勇 刘凯 苗俊刚

辛灿伟, 胡岸勇, 刘凯, 等 . 相控阵近场初始相位快速实时校准方法[J]. 北京航空航天大学学报, 2018, 44(12): 2496-2502. doi: 10.13700/j.bh.1001-5965.2018.0225
引用本文: 辛灿伟, 胡岸勇, 刘凯, 等 . 相控阵近场初始相位快速实时校准方法[J]. 北京航空航天大学学报, 2018, 44(12): 2496-2502. doi: 10.13700/j.bh.1001-5965.2018.0225
XIN Canwei, HU Anyong, LIU Kai, et al. Real-time rapid initial phase calibration method of phased array in near field[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2496-2502. doi: 10.13700/j.bh.1001-5965.2018.0225(in Chinese)
Citation: XIN Canwei, HU Anyong, LIU Kai, et al. Real-time rapid initial phase calibration method of phased array in near field[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2496-2502. doi: 10.13700/j.bh.1001-5965.2018.0225(in Chinese)

相控阵近场初始相位快速实时校准方法

doi: 10.13700/j.bh.1001-5965.2018.0225
基金项目: 

国家重点研发计划 2016YFC0800401

国家自然科学基金 61731001

详细信息
    作者简介:

    辛灿伟  男, 博士研究生。主要研究方向:毫米波辐射计灵敏度提高技术

    胡岸勇  男, 博士, 讲师。主要研究方向:微波遥感技术、毫米波系统、信号与信息处理

    刘凯  男, 博士研究生。主要研究方向:毫米波辐射计近场校准与成像

    苗俊刚  男, 博士, 教授, 博士生导师。主要研究方向:微波遥感理论与技术、毫米波亚毫米波技术

    通讯作者:

    胡岸勇, E-mail: hay800906@126.com

  • 中图分类号: V221+.3;B553

Real-time rapid initial phase calibration method of phased array in near field

Funds: 

National Key R & D Program of China 2016YFC0800401

National Natural Science Foundation of China 61731001

More Information
  • 摘要:

    相控阵接收机主要依靠相位控制实现天线波束指向的转动。接收机的初始相位是实现波束指向控制的先决条件。在换相法的基础上提出了一种相干换相法,可以快速完成接收机各通道初始相位的初次校准,并应用旋转矢量法(REV)进行初始相位的精确校准。校准时相控阵天线和测试探头均不动,且在特定应用中不需要精确定位测试探头的位置,这样可以很容易集成到相控阵接收机监测系统中,实现快速实时校准。针对本文提出的方法,在Ka波段阵列辐射计上进行了验证,结果表明:相位精度达到5°±1.5°,完成256通道一次初始相位的校准仅需2 min左右。

     

  • 图 1  相干换相校准原理

    Figure 1.  Schematic diagram of coherent phase-shift calibration

    图 2  16通道的功率检波后相位数据

    Figure 2.  16-channel phase data after power detection

    图 3  通道1截取后拟合曲线

    Figure 3.  Truncated fitting curve of Channel 1

    图 4  测试源位置误差仿真流程

    Figure 4.  Test source position error simulation flowchart

    图 5  xyz方向偏离5 mm时仿真结果

    Figure 5.  Simulation results of 5 mm deviation in xyz direction

    图 6  被动式毫米波成像系统整机实物图

    Figure 6.  Complete machine picture of passive millimeter wave imaging system

    图 7  快速相位校准原理框图

    Figure 7.  Functional block diagram of high-speed phase calibration

    表  1  实测16×16相控阵通道残差

    Table  1.   Channel residual measurement of 16×16 phased array

    (°)
    阵列数 对齐次数
    0次 1次 2次 3次 4次
    A1 37.8 12.8 17 14 5
    A2 114 82.6 96.4 18.3 3.6
    A3 28.7 17.2 7.5 2.5 3.4
    A4 26.4 11.2 4 2.7 2.7
    A5 73.3 30.4 13.9 8.3 6.1
    A6 86.2 25.2 8.2 15.9 10
    A7 102 32.2 11.5 11.6 6.3
    A8 53.7 18.3 20.3 7.1 3.8
    A9 113 115 23.8 5.1 4.4
    A10 108 43.2 4.7 4.6 2.5
    A11 44.1 12.4 7.1 4.5 11
    A12 21.4 26.2 32.9 8.4 3.4
    A13 17.6 16.7 2.9 3.1 3.2
    A14 38.3 13.6 3.6 9.7 7.7
    A15 48.3 33 20.6 6.4 3.5
    A16 109 36 14.5 15.8 13
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-04-23
  • 录用日期:  2018-07-13
  • 网络出版日期:  2018-12-20

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