Research And Implementation Of Field Data Acquisition System Based On Android And Mobile GIS

Surveying and mapping field data acquisition is the foundation of surveying and mapping project,and it is also the most complicated and difficult part of the whole surveying and mapping project.Traditional surveying and mapping field data acquisition is time-consuming,costly and laborious.With the improvement of Android mobile device performance and the development of mobile GIS technology,the demand of mobile GIS for field data acquisition is becoming more and more urgent.Based on Android mobile devices,this paper adopts mature technologies and schemes such as ArcGIS Runtime SDK for Android,Autonavi Web service API and front and back end development to study,design and implement the field data acquisition system based on Android and mobile GIS.The system is designed as online management module and offline acquisition module according to the actual work requirements.The specific research results are as follows.(1)The online management module of the system interacts with the front and back end data using JSON data between the Android mobile terminal and the back-end server through the interface API,so as to realize the user's visual management of accounts,employees and materials on the Android mobile terminal.Enterprise managers can realize multi-level management and scheduling of staff and materials through the online management function of the system.(2)The system offline acquisition module supports the loading of raster data such as Map of heaven and Earth,TIFF,TPK,etc.At present,it supports the loading and editing of mainstream vector data such as SHP data,GEOdatabase data and SpatiaLite spatial database,and provides acquisition templates for users to collect directly.In addition to point,line and plane data collection,the SketchEditor provides a variety of other acquisition methods such as sketch,quick point,photo collection and track recording.Through mobile style library and ground object gb code to provide a standardized solution for mobile terminal symbolization.Inspiration was obtained from drawing templates of Southern CASS,ArcGIS and other software to determine the design idea of symbolic templates,so that the symbol rendering and drawing effect of mobile terminal is closer to desktop application.In order to improve the ability of data acquisition,the system provides a variety of fast tools for the use of the collector,through the GeometryEngine tool class to deal with spatial relations,to achieve selection,element replication,element combination,element pruning,element segmentation,element pruning and other functions.In order to enrich the system analysis function,from simple geometric measurement to mobile terminal route planning solution with Autonavi Web service API,at the same time,provide a variety of buffer analysis methods.(3)Taking the large-scale topographic map project as an example,the technical scheme of topographic map drawing after the adoption of this system is demonstrated,and the field data acquisition system is tested and proved to be safe,reliable and stable,meeting the production requirements of field data acquisition,and the scheme is feasible.Combined with the author's long-term field data collection experience,all the functions of the system are in line with the actual production needs,reduce the traditional field data collection workflow as much as possible,and effectively improve the efficiency and quality of field data collection.Finally,based on Android mobile devices,with the help of mobile GIS technology,Design and implement a field data acquisition system integrating offline collection and online management.Figure[67]Table[24]Reference[87]...