波分复用(WDM)光网络是航空机载网络发展的方向，采用波长路由和电交换相结合是解决目前机载WDM光网络互连的主要途径。其中的一个关键问题是如何对航空机载网络节点进行子网划分，将相互之间通信流量大的节点划入同一个子网，采用波长路由通信；将相互之间通信流量小的节点之间采用电交换互连。采用多维空间聚类的算法思想，将网络节点通信流量问题转换为空间聚类问题，进行节点流量位置预处理和节点流量位置聚类两个过程，解决了航空机载WDM子网划分问题，并通过实例验证了方法的可行性。

Wavelength division multiplexing (WDM) optical network is the direction of the airborne network development. The combination of wavelength routing and electric exchange is the main method to complete the airborne WDM optical network interconnection currently. One of the cruxes is how the airborne network node is subnetted. The large traffic distribution of mutual communication between the nodes is assigned to the same subnet, employing the wavelength routing transmission; the low traffic distribution of mutual communication between the nodes is interconnected by electric exchange. Based on clustering algorithm in multidimensional space, the node traffic distribution problem is converted into spatial clustering problem, which completes node location preprocessing and node flux-location clustering to solve the airborne WDM network subnet partition, and it finally verifies the feasibility of the method through examples.