Mobile node positioning method based on connectivity and weighting correction

The invention provides a mobile node positioning method based on connectivity and weighting correction. When positioning of a mobile unknown node is performed, first a connectivity formula is utilized to calculate connectivity between nodes to select a beacon node participating in positioning, then a weighting correction model is utilized to correct an RSSI distance-measuring error when distance between the unknown node and the beacon node is measured, finally when the unknown node obtains enough beacon information, a least square method is utilized to estimate coordinates of the unknown node. Compared with a Monte Carlo mobile positioning method, the method has a smaller calculated quantity, but has equal positioning accuracy. 本发明提供种基于连通度和加权校正的移动节点定位方法。在对移动的未知节点进行定位时，首先利用连通度公式计算节点间的连通度来选择参与定位的信标节点，然后在测量未知节点与信标节点间距离时利用加权校正模型修正RSSI测距误差，最后在未知节点得到足够的信标信息后，用最小二乘法对未知节点坐标进行估计。该方法与蒙特卡罗移动定位方法相比计算量较小，但与其拥有同等定位精度。