Sichuan Total Station Company introduces the industry background to you

　　In recent years,the construction and development of basic cities have put forward more requirements for comprehensive measurement of mountain shape elements in basic surveying.The main purpose of mountain profile survey is to conduct geological survey of mountains,including establishing mountain data and basic technical archives that meet the needs of the project,conducting geological exploration as required,accurately calculating the excavation volume of mountains,and preparing topographic maps of mountains.This requires that accuracy,quality,and efficiency be ensured during the survey.

　　Contour drawing for mountain surveying

　　Application of Optech Polaris 3D laser scanner in mountain shape measurement

　　Technical advantages

　　1.High accuracy and efficiency

　　The performance of the all-weather protective housing of the Optech Polaris 3D laser scanner allows the product to be suitable for most environments,with a data acquisition rate of up to 500000 points per second,and is not affected by ambient light.At the same time,the hardware adopts multiple echo technology,which has stronger penetration ability for vegetation.Compared with traditional measurements,it not only has faster speed,but also has more comprehensive sampling points!

　　2.Intelligent security

　　Optech Polaris 3D laser scanner with 360°×A field of view angle of 120°,and the Z distance can exceed 2000 m.On the one hand,it improves the efficiency of data acquisition,on the other hand,it solves potential safety hazards for operators,reduces labor costs,and improves actual production capacity.WiFi hotspot connection device,remote intelligent control,solves the problem of incomplete data collection and repeated measurement caused by human occlusion.

　　Sichuan Surveying and Mapping Instrument

　　3.Customized

　　Optech Polaris 3D laser scanner comes with dual high-resolution camera imaging function,and color point clouds restore real work scenes.The exclusive external camera can enhance the reproduction effect of the real scene.In addition,for the implementation of user coordinate systems,a dedicated kit is used to achieve one click automated solution,providing strong support for coordinate problems.

　　4.Scalable features

　　The Optech Polaris 3D laser scanner is configured with multiple interfaces,network cables,and wireless transmission methods,which can be used to import equipment after the software formulates the work area,and quickly solve the station erection problem on site;External camera touch interface for intelligent control of photo taking operations;Configure high-precision sensors to ensure data quality and accuracy.

　　Overall operation process of digital mountain measurement

　　Overall operation process

　　1.Data collection

　　The purpose of field reconnaissance is to find a more reasonable instrument rack site to make the data scanned from the perspective more comprehensive,better quality,and more efficient;On the other hand,it aims to reduce the time required for field data collection,achieve targeted goals,ensure quality and quantity.

　　Optech Polaris 3D Laser Scanner

　　When collecting with the Optech Polaris 3D laser scanner,several different point cloud density levels can be selected,and users can adjust them according to actual work requirements.Generally,in topographic survey,the Corase(coarse scan)mode is mainly used.The operation time for collecting data at each station is 3-4 minutes,and the measurement accuracy of single station data is 4 mm and 100 m(the single point accuracy at 100 m is 4 mm).Selecting this mode for operation can effectively improve work efficiency while ensuring data accuracy.

　　2.Data preprocessing

　　The data preprocessing uses ATLASCAN processing software,which is a random software provided with Optech Polaris 3D laser scanner and can complete the pre splicing,precise registration,noise removal,coordinate conversion,and other tasks of point cloud data.

　　Pre splicing of point cloud data

　　The coordinates of point cloud data obtained by a three-dimensional laser scanner are relative coordinates.In order to meet the needs of actual production,it is necessary to convert from relative coordinates to absolute coordinates(local coordinates).

　　Point Cloud Data

　　3.Output of achievements

　　(1)Terrain grid model

　　ATLASCAN can adjust appropriate parameters,and the software automatically fits the mountain model data.

　　Terrain grid model

　　(2)Contour drawing

　　Using Huadian point cloud processing software,mountain contours can be automatically generated based on point cloud data.

　　Contour drawing