摘要
随着天线口径的加大和工作频段的提高,远场条件越来越难以满足,对采用连续波信号体制的多模馈源、双通道单脉冲跟踪设备的角度标校提出了新的问题。通过研究自跟踪天线和差口对源天线辐射场的近场响应,定量计算出了源天线来波在天线和差口激励起的电压响应的相对相位随距离的变化曲线,给出了天线不同工作频段的双通道单脉冲跟踪设备相位校准修正曲线。经实际工程验证,采用该方法修正是正确的。
With the antenna aperture increase and operation frequency band improvement, the far-field conditions are increasingly difficult to meet. The angle calibration of the dual-channel monopulse angle tracking technique is faced with new problems. By studying the near-field response of a self-tracking antenna sum port and difference port to a source antenna radiation field,the variation curve of relative phase with distance of voltage response of source antenna arrival wave excited at antenna sum port and difference port is calcu- lated. This paper presents the phase calibration correction curve of double-channel monopulse tracking equipment of antenna at different operation frequency bands. The engineering practice proves that this method it is correct to use this method for correction.
出处
《无线电工程》
2013年第5期32-34,54,共4页
Radio Engineering
关键词
近场
角度标校
角误差解
交叉耦合
near-field
angle calibration
angle error demodulation
cross coupling
