Research On The Application Of Multi-source Digital Survey Technology In Tongzhou Lighting Tower

Based on the actual protection needs of Tongzhou burning light tower in Beijing,a large number of documents and practical cases of 3D laser scanning technology,low altitude close range photogrammetry technology,survey technology and multi-disciplinary collaborative application were investigated in the early stage.Combined with the analysis of the characteristics and forms of ancient pagodas,the analysis of traditional survey methods and the analysis of new digital survey methods,this paper analyzes the data requirements of the survey stage of ancient pagodas,and forms a systematic study of multiple digital survey technology in Tongzhou burning light tower protection.In terms of data demand analysis in the survey stage of Tongzhou burning light tower: in view of its huge historical and cultural value,Tongzhou burning light tower has been concerned and valued by all parties.Based on the analysis of the difficult characteristics of the actual survey of the ancient pagoda,the method of effective integration of various survey methods and data fusion processing of multiple survey methods is adopted to realize the fine survey of the ancient pagoda,that is,the combination of ground 3D laser scanning and UAV low altitude close range photogrammetry to realize the current survey of the Tongzhou burning light tower.In the aspect of data acquisition and integration of survey of Tongzhou burning light tower: Based on 3D laser scanning to obtain point cloud data model and close range photogrammetry to obtain digital image information,and the air ground data fusion,combined with precision control and analysis to adjust the model,realize the mutual supplement of 3D data,improve the local and overall geometric accuracy,and facilitate the fine 3D analysis of the structure of the ancient tower.Finally,the fine three-dimensional model of the light tower is obtained.Based on the comparison of multi-stage laser scanning data and the traditional measurement data,the monitoring task of Tongzhou burning light tower is completed.In the aspect of multi-source digital surveying and mapping technology and multi-disciplinary integration: the use of multi-source digital surveying technology can provide data support for the mechanical analysis of Tongzhou burning light tower.Through the multi-source digital mapping technology,the measurement data analysis and the monitoring of ancient pagoda body,the establishment of monitoring benchmark system and the comparison of monitoring data,provide data support for the protection research of Tongzhou burning light tower,and realize the integration of multi-source digital mapping technology and multi-disciplinary.In the aspect of expression and application of multi-source digital surveying and mapping data: Based on the point cloud data and triangle network model of Tongzhou burning light tower,the special maps such as ancient tower line drawing and orthophoto map are made to provide data support for repair and design;the data obtained and model established by multi-source Digital Surveying technology can provide data support for disease investigation of ancient tower;the data obtained and model established by multi-source digital surveying technology can provide data support for disease investigation of ancient tower;through multi-source number The digital survey technology can provide technical support for the digitization of cultural heritage,and realize the digital display of cultural relics and the dynamic display of static cultural relics.