Land Use Status Survey Based On UAV Remote Sensing Technology

The purpose of the land use survey is to investigate the types,areas,spatial distribution and land use status of various types of land.To investigate the types,distribution,quantity and utilization of land resources is to meet the needs of land statistics,the formulation of national economic plan,and the preparation of land use maps.There have been many investigations of the land use status at all times and in all countries,and many methods have been applied.Since the founding of new China,two national surveys on land use has been conducted: the first national land survey and the second national land survey.Along with the rapid development of remote sensing technology,especially the widespread application of UAV(unmanned aerial vehicle)in recent years has made a revolutionary improvement in the technical methods of land use survey.This paper is based on the wide application of UAV remote sensing technology.The indoor work and field work technology of land use status investigation based on UAV remote sensing are discussed separately in this paper,mainly divided into several aspects.(1)This paper has expounded the importance of land use survey and introduced the research status of land use survey at home and abroad,which also lay the foundation for future technical research.(2)Introduces the data acquisition and processing of UAV remote sensing: mainly introduces the principle of remote sensing of UAV,analyzes the advantages of UAV remote sensing in comparison with other remote sensing platforms;introduces the acquisition and quick processing of UAV data,focusing on the key technical aspects of UAV data processing.(3)Land use survey in this paper takes the integration investigation method of indoor work and field work.Firstly,the indoor visual interpretation was done;and then field investigation and verification for doubtful map-spots,linear feature,etc.was carried out;after that the field investigation and verification results was collected,edited,and modified by indoor part;which effectively guarantee the efficiency and reliability of the survey.Finally,the precision evaluation was made on land type interpretation of land use status based on UAV remote sensing,which makes quantitative evaluation of the feasibility of UAV remote sensing in land use status survey.(4)By selecting A Dam of Changshun County,Qiannan Buyi and Miao Autonomous Prefecture,Guizhou Province as the pilot area,using UAV for aerial photography,Postflight Terra 3D UAV data processing software for automatic data processing to generate orthophoto map,ARCGIS software for remote sensing image visual interpretation,the HI-TARGET Qpad handheld terminal for field investigation,and finally the statistics analysis was carried out on the finally results after indoor collecting and editing.The feasibility of the overall technical route in the paper is verified from the actual operation.Based on the actual participation of project,the author makes a preliminary study on the rural area land use survey method based on UAV remote sensing.It is believed that some technical methods and ideas in this paper will provide a useful reference for future similar projects or technical research in this area.