Method of multi-level recursive and application to nonlinear dynamic deformation forecasting
(1.Shandong University of Science and Technology, Tai’an 271019,China2.Department of Territory Information and Surveying Engineering, Xuzhou Normal University, Xuzhou 221009, China3.Institute of Geodesy and Geophysics, Chinese Academy of Science, Wuhan, 430077,China)
Abstract: The time-dependence bilinear mixed-regression deformation model and time-dependence bilinear dynamic system deformation model are established for deformation observation series. According to the multi- level recursive method, the time-dependence parameters are first traced and predicted, and then the dynamic system states. Due to the method considering time-dependence of deformation and having stronger adaptability to time-dependence system, it can improve forecast’s precision. It is very effective for data processing of nonlinear dynamic deformation monitoring to make multi-step forecasting.
Key words: multi-level recursive； dynamic monitoring； timedependence parameters