斜极化雷达辐射发射指标测量与计算方法研究

Research on Measurement and Calculation Method of Radiative Emission Index of Oblique Polarization Radar

本文提出了一种斜极化雷达辐射发射指标的测量与计算方法.采用接收天线正交的两次组合测量,可快速测量与计算得到任意未知角度斜极化雷达各频点的信号真实幅值,进而计算得到斜极化雷达的谐波和乱真抑制度.分别采用接收天线一组X轴对称角度和0°三个极化方向的三次频域组合测量可快速测量与计算得到任意斜极化雷达每个频点的准确极化角度.提出的测量与计算方法可有效避免目前国军标中雷达辐射发射指标测量方法针对斜极化雷达时的不足,且测量效率高,误差小,试验结果证明了提出方法的正确性和准确性.

A method for measuring and calculating the radiation emission index of linear oblique polarization radar is proposed in this paper.The actual amplitude of each frequency of the oblique polarization radar at any unknown angle can be quickly measured and calculated by using a single combination of the receiving antenna orthogonal measurement,and then the harmonic and spurious suppression degree of the oblique polarization radar can be calculated.The accurate polarization angle of each frequency point of an arbitrary oblique polarization radar can be quickly measured and calculated with the three frequency-domain combined measurement results of a set of X-axis symmetric angles and three polarization directions of 0 degrees.The proposed measurement and calculation method can effectively avoid the shortcomings of the current radar radiation emission measurement method for the oblique polarization radar.The measurement efficiency is high and the error is small.The test results prove the correctness and accuracy of the proposed method.