| 摘要: |
| 在对机扫天线相位和差单脉冲角跟踪精度分析的基础上，针对相控阵具有相位敏感度高、电扫伴随着增益和相移变化以及多通道合成、多方向标校等特点，分析了相控阵相位和差单脉冲角跟踪系统的跟踪精度，讨论了它的误差源及其产生的物理机理，推导出了相应的系统误差表达式，并提出了减小误差的相应措施。 |
| 关键词: 相控阵天线 连续闭环角跟踪 相位和差单脉冲 跟踪精度 电轴漂移误差 |
| DOI：10.20079/j.issn.1001-893x.221117001 |
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| 基金项目: |
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| Phased Array TT&C Technology—Part2:System Error in Continuous Closed-loop Angular Tracking by Using Phased Array Antenna |
| LIU Jiaxing |
| (Southwest China Institute of Electronic Technology,Chendu 610036,China) |
| Abstract: |
| For the phased array antenna featured with high phase sensitivity,gain and phase shift changes in scanning,multi-channel synthesis,and multi-direction calibration,its tracking accuracy and measurement precision of the phase phase sum-difference monopulse angle tracking system are analyzed based on the accuracy analysis on phase sum-difference difference of the monopulse angle tracking for mechanically scanning antenna.The error source and its physical mechanism are discussed,the corresponding system error formula is derived,and the corresponding measures to reduce the error are proposed. |
| Key words: phased array antenna continuous closed-loop angle tracking phase sum-difference monopulse tracking accuracy drift error of electric axis |
