Research on Full-period Query Oriented Moving Objects Spatio-Temporal Data Model
Xinchang Zhang · Acta Geodaetica et Cartographica Sinica · 2008
With the development of mobile communication mobile positioning technique and GPS,managing a large of moving objects efficiently become a new research content in mobile spatial information service.A moving objects spatio-temporal data model oriented full-period query was put forward and its basic definition was given out.Several methods of evaluating motion location were discussed,such as time-delay method,moving average method and cubic exponent method.State updating tactic of moving objects was studied deeply and a new state updating tactic of moving objects was presented,which can be adapted to the interval of state updating of moving object.For the tactic,a one-variable exponent regression equation of moving objects updating interval was built in a moving time window and the trend of state updating of moving objects was indicated by regression parameter of the equation.So the regression parameter can be used to adjust the threshold of state updating.Finally,a experiment result was presented by stimulating motion of moving object in computation and further research work was prospected.