雷达吸波材料（radar absorbing material，RAM）反射率的大小是衡量吸波材料性能好坏的重要指标.提出一种对雷达吸波材料反射率进行现场测量的新方法.该方法将六端口矢量反射计与H面喇叭测量探头相结合，并配合现代电子计算机及Matlab软件对测量系统进行校准与数据处理，最终成功实现雷达吸波材料反射率的现场测量.实验结果表明，该方案切实可行，精度满足工程需要，又一次拓宽了六端口测量技术这一经典理论的应用领域，并且在六端口系统的校准方面提出一种简单快捷的校准方法.该方法与传统方法相比，无论在时间上还是在校准精度上都有较大幅度的提升.

This paper proposes a new method for measuring reflection coefficient of radar absorbing material (RAM). This method combines the sixport reflectometer with the Hplane measuring probe, and performs calibration and data processing with Matlab. The experimental results indicate that the method is practical with precision meeting engineering requirements. The proposed method is efficient. Compared to traditional approaches, it improves measuring precision and saves time.