对于大江大河的洪水预报问题,往往是多支流汇入,同时要求预报出河道各断面的流量和水位,这属于多输入多输出(MIMO)系统.该系统可能是线性系统,也可能是非线性系统.比如河道流量用马斯京根法演算,如果k、x不随示储流量变化,为线性系统;如果 For flood forecasting problems of large rivers, multiple tributaries are often imported, and meanwhile, it is required to predict the flow and water level of each section of the river channel, which belongs to a multiple input multiple output (MIMO) system, which may be a linear system or a nonlinear system For example, the river flow is calculated by Muskingum method, if k, x does not change with the stored flow, it is a linear system; if