大口径天线多模馈源跟踪系统校相参数的计算

基于测控系统常用的大口径天线多模馈源跟踪系统校相需求，介绍了当前常用的校相方法，针对太阳校相单次校相结果误差大、需取均值使用导致校相周期长等缺点，通过分析多模馈源跟踪系统工作原理，提出了一种基于固定波程差的校相参数计算方法。该方法利用不同频点的精确校相值标定跟踪系统和、差通道之间波程差，进而计算出整个频段中各频点校相值。最后结合靶场遥测设备进行计算验证，应用表明该方法计算快捷，计算结果稳定可用，符合实际数据的变化趋势，能够满足各项实际工程应用需求。

Calculation of phase calibration parameters for large-caliber antenna multi-feed tracking system

According to the phase calibration requirement for large-caliber antenna multi-feed tracking system in tracking,telemetry and control(TT&C) system,this paper introduces the commonly-used phase calibration methods,and provides a phase calibration calculation method based on fixed wave path difference to overcome the shortcomings of solar phase calibration such as large error,requiring average value,and long calibration time through analyzing the principle of multi-feed tracking system. This method uses the precise value of phase calibrate in different frequency to calibrate the wave path difference between sunm and difference channels in tracking system,then calculates the value of phase in all frequencies.Finally,the range equipment is adopted to perform calibration and validation.The application shows that the method computes fast,the calculation results are stable and available which conform to the change trend of actual data,and it meet the requirements of actual project application.