Research On 3D Terrain Data Fusion Technology Based On Slope Radar Monitoring Data

In recent years,landslides and other deformation disasters have occurred one after another,posing a great threat to the safety of people's property and engineering construction.As a new type of slope monitoring method,the deformation measurement accuracy of the slope radar system can reach the order of mm or even sub-mm.The obtained deformation inversion results can provide basic data support for the study of slope landslide disasters.Conducive to the identification,judgment and trend prediction of the deformation field of the sliding body.However,the existing monitoring models and methods of slope radar have many problems.The monitoring model still uses the single curve analysis method of traditional point monitoring technology,and it does not make full use of the area point group data to build the model.The monitoring methods have not yet taken advantage of the spatiotemporal continuity of multi-scale telemetry data.They are still limited to the time dimension,that is,landslide time prediction,and there is no effective space dimension monitoring method for landslide orientation.In view of this situation,this article takes the actual monitoring data of slope radar as the object,and gradually and deeply studies from the fusion of radar deformation and three-dimensional spatial data,and can take advantage of the spatial continuity advantage of slope radar to landslide the slope with risk of landslide.Monitoring and positioning.The specific research content and innovation results are as follows:(1)Two-dimensional data onto slope radar is not easy to interpret and analyze,and needs to be mapped to three-dimensional space.At present,there is no overall solution to calibrate the accuracy of slope radar deformation measurement of a high-precision 3D space.Aiming at the above problems,the thesis designed a set of controllable scene data fusion and comparative experiment process,and carried out a three-dimensional mapping position accuracy verification method of the open pit mining slope.(2)Due to the limitation of the observation angle range of the traditional linear SAR target,only limited target information can be obtained,and threedimensional imaging cannot be performed.In response to the above problems,design and realize the registration of multi-azimuth radar and terrain data,multi-platform multi-azimuth radar can observe a larger range,can obtain high-resolution radar images of different azimuth angles,and the use of multiazimuth angle can be to detect in any area,its unique system advantage has gradually become a hot spot in the field of radar research.(3)A detailed analysis of the software-demand-level design principles of the slope radar 3D fusion visualization system software function is carried out.The layered design mode is used to obtain the software architecture that meets the needs.At the same time,the visualization process is explained in detail,and the software functions are finally completed stable operation.