建立屏山站日流量分期平稳自回归模型，并模拟了序列长度为5200年的日流量过程对该模型进行检验。
Divided period Stationary Autoregressive model for daily flow of Pingshan hydrological station is established in this paper. Daily flow procedure during 5200 years is simulated to test this model.
自回归模型属于线性平稳模型，只能描述平稳序列的统计特性。
The autoregressive model is a kind of linear-steady-models. so it just describes the statistics characteristic of steady array.
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