AN EXAGGERATE ERROR PROCESSING METHOD IN MONITORING A BRIDGE BASED ON THE GLOBAL NAVIGATION SATELLITE SYSTEM

摘要

PURPOSE: An exaggerate error processing method for monitoring a bridge based on a GNSS(Global Navigation Satellite System) is provided to prevent an accident due to management carelessness, thereby improving the stability of a bridge. CONSTITUTION: A position coordinate value of a receiver is obtained through an adjustment process of an output signal from a satellite. Multipath errors in the position coordinate value are corrected. A quality control process including a statistical verification process is implemented for the position coordinate value which deviates from a multiple path effect. The position coordinate value with excessive error removed is finally outputted. De-noising is implemented by a wavelet transformation technique. The wavelet transformation technique selectively separates noise into high frequency band and low frequency band.