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针对现有连续模式中链路时延函数形式难以假定的问题,提出一种直接的基于正则化的时延层析成像估算方法,该方法没有预先对链路的时延函数形式进行假设,而是结合了正则化的理论并对现有的谱修正方法进行了改进,由光纤通信网络中的时延的线性模式得出一个迭代式,然后利用这个迭代式进行直接迭代求解,从而得出链路上的时延的估算值。通过MATLAB和NS2仿真软件获得的数据进行了仿真实验,验证了该方法的有效性,在链路时延分布假定不合适时,该方法得到的时延估算值的精度高。
Aiming at the problem that the function of link delay function is difficult to assume in the existing continuous mode, a direct regularization-based delay tomography estimation method is proposed, which does not presuppose the delay function of the link in advance. Is a combination of the theory of regularization and the existing spectral correction method is improved, by the fiber optic communication network delay linear model derived an iterative, and then use this iterative direct iterative solution, which leads to the chain The estimated delay on the road. The simulation results of the data obtained from MATLAB and NS2 simulation software verify the validity of the proposed method. When the link delay distribution is not suitable, the accuracy of the proposed delay estimation is high.