一种新的圆环全域校相方法

A Circle Full-field Phase Calibration Method

阐述了多模馈源单脉冲跟踪雷达测角系统相位测量校正方法中校相值不确定度与测量子样数量的关系。给出了该类型测角系统任意象限位置空间偏角相位计算公式,并基于此公式提出一种新的圆环全域校相方法。通过对参考信标进行环绕一整周的多点测量,能够克服传统四点相位测量校正方法校相值不确定度大、置信率低、校相结果受零点对不准影响大和多径干扰误差严重的问题,同时给出了该方法的实际测试验证结果数据。

The relationship between the uncertainty in corrected phase result and the number of measuring samples in the phase measuring and calibrating method for the multi-mode feed and monopulse tracking radar angular measuring system is described in detail.The calculation formula of spatial deflection angle in arbitrary quadrant position in this system is provided, and a new circle full-field method of phase calibration is proposed based on this formula. By multipoint measurement encircling the reference radio beacon,this method can solve the problem in traditional four-point phase measuring and calibrating method that the uncertainty of result is large, the confidence ratio is small, corrected phase result is seriously affected by the radio beacon misalignment and multipath interference error is large,and the actual test results of this method are given as well.