介绍了基于Phong模式的MonteCarlo方法.该方法能够对红外室内通信的重要性能参数———信道脉冲响应函数进行快速有效的计算,可应用于包括漫反射、镜面反射以及粗糙度介于这两种反射之间的表面反射情形的信道中.相对于经典的有限元法,在高次反射时具有更为明显的优势,不但计算速度快,而且计算结果也更接近真实信道环境.该方法的使用,能够为设计高性能红外系统提供更为可靠的参数. The Monte Carlo method based on Phong model is introduced.The method can calculate the channel impulse response function, which is an important performance parameter of infrared indoor communication, and can be applied to two kinds of methods, including diffuse reflection, specular reflection and roughness Reflected in the channel between the surface reflection situation.Compared with the classical finite element method, the higher-order reflection has a more obvious advantage, not only the calculation speed is fast, but also the calculation result is closer to the real channel environment.The use of this method , To provide more reliable parameters for designing high-performance infrared systems.