The Application Of Robust Kalman Filtering In Bridge Cable Tower Deformation Monitor

Nowadays large-scale bridge construction has been in the stage which dose not exist before. The methods of safety monitor , the technique of data solutions , appreciation and analysis of monitor. It is important to protect the safety of bridge. The cable tower is the key of whole bridge. If the treating method of monitor data in construction state or operation state is not proper ,large loss will be come out .So we should choose proper monitor method .The paper against the practical problems in bridge cable monitor ,studies robust estimate of Kalman filtering in bridge monitoring and analysis the cable tower of Su-tong bridge monitoring .The main contains as follows:Summarizing the necessity of bridge cable tower monitoring, the general main technique , error analysis and fade measures. Studying the characters of monitor data solution ,the method of establishing Kalman filtering model and the confirmation of initial value. Through example, it has some predominance in data treating. This paper bases on robust estimate, drives recurrence equations and gives the calculation procedure. After establishing effective data solution models, it can identify the situation of error .It can be used in bridge monitor points, we can compare the results with the methods of time-series and wavelet. The precision is very high. The we use it in bridge cable tower data of altitude control network .Treating it in single adjustment and the whole net adjustment .We can see it that the precision of robust Kalman filtering is satisfy .Verifying the method is effective in robust.Bonding the characters of Su-tong bridge cable tower center coordinate monitor data, establishing proper robust estimate of kalman filtering model and treating the cable tower monitor data, analyzing the result and designed data, we can real-time control through recuperative information.Through the above studies, the tower monitoring data be treated by robust estimate of Kalman filtering,the result can reach requirement,it can settle thedeficiency in other models and has many utility value.