The average power pattern of the Side-Fed Offset Cassegrain(SFOC) dual reflector antenna is analyzed,and the effect of the random surface error on radiation characteristics of the antenna is addressed.

• 以侧馈偏置卡塞格伦双反射面天线为对象；通过数值计算方法分析了该天线的平均功率方向图；研究了反射面随机表面误差对天线辐射特性的影响.