网络O-D矩阵估计的两阶段交叉口回归分析方法

通过分析交通网络O-D矩阵估计与交叉口O-D矩阵估计问题的关系，获得从网络到交叉口O-D矩阵估计问题的转换条件，由此构建网络O-D矩阵估计的两阶段交叉口回归分析方法。该方法首先求解“叉点具有产生、消失流量的交叉口O-D矩阵估计问题”分离起讫点的通过流、产生流和消失流，然后根据网络构造交叉口，并求解“叉点无产生、消失流量的交叉口O-D矩阵估计问题”获得需要估计的网络O-D矩阵。该方法以路段观测交通流量为基础进行估计，无须进行交通分配等辅助手段。计算分析表明，该方法能获得较为满意的估计结果。

Two-Stage Crossway Method of Estimating for Origin-Destination Matrices of Networks

After compared the problem of estimating O-D matrices of networks with that at a crossway,transform conditions are obtained, and then a new succinct method of estimating O-D matrices of networks is proposed. In the method, origin (flow,) destination flow and pass flow are separated firstly from line's traffic adjacent to a crossway, secondly a quasi- (crossway ) is set up corresponding to a given network, thirdly O-D matrices of the network is estimated by linear recursive (method) resemble to estimating O-D matrices of the crossway without origin flow and destination flow at the crossway. The (method) is of an advantage because that is independent on the traffic assignment. The result simulated by compute shows the method works well.