Self-adaptive arc length deformation monitoring method and device based on multi-source information fusion

Abstract

The invention relates to the field of deformation monitoring, and discloses a self-adaptive arc length deformation monitoring method and device based on multi-source information fusion. The method comprises the following steps of according to satellite observation data of a monitoring station and satellite observation data of a reference station, determining a GNSS deformation early warning value of the monitoring station based on a resolving arc length, determining a rainfall early warning value of the monitoring station according to a rainfall sensor of the monitoring station, determining an inclination early warning value of the monitoring station according to an inclination sensor of the monitoring station, determining a comprehensive risk value according to the GNSS deformation early warning value, the rainfall early warning value and the inclination early warning value, adjusting the resolving arc length according to the comprehensive risk value, and determining and monitoring the deformation of the monitoring station according to the adjusted resolving arc length. By fusing multi-source data of the GNSS and the sensor, the arc length is quickly, accurately and adaptively matched and calculated, and the elastic requirements of safety monitoring in different service states for precision and timeliness are met.

Description

technical field [0001] The present application relates to the field of deformation monitoring, in particular to an adaptive arc length deformation monitoring technology based on multi-source information fusion. Background technique [0002] Satellite navigation high-precision monitoring technology often selects longitudinal sections along the deformation direction to establish deformation observation points in representative areas within a certain range, and establishes them at suitable locations for remote monitoring points (such as on solid bedrock or on the roof of office buildings in mining areas). datum point. A GNSS receiver is set up at the reference point, and according to its high-precision known three-dimensional coordinates, the variation of the deformation point coordinates (or baseline) is obtained after several periods of observation. According to the deformation of the observation point, a safety monitoring model is established to analyze the deformation law ...

AI Technical Summary

Problems solved by technology

[0012] However, those skilled in the art can understand that in the prior art, the solution of manually configuring the fixed arc length in advance, because the differential requirements for the accuracy and timeliness of the deformable body during the specific deformation period are not considered, only the fixed arc length is used. The calculation mode will cause the calculation accuracy and timeliness to be unable to be adjusted in time according to the actual scene. For example, the deformation body has relatively high requirements for accuracy in the stable period, and when a large displacement trend occurs, the displacement of the deformation body itself is relatively small. large, with greater safety hazards, at this time the requirements for timeliness are more prominent

Therefore, the existing technical solutions cannot well meet the needs of customers in real business scenarios

Images