The Application Of Digital Survey System In The Geographical Conditions Census

Geographical conditions census is a survey of major national conditions, to adaptto the needs of social and economic development, national defense and scientificmanagement. According to the geographic conditions census project for basicresearch on the application of digital survey system in the geographic conditionssurvey investigation and verification, put forward technical advantages, providingexperience for the geographical national census. The main contents and results of thisstudy are as follows:1. This paper outlines the research background, case and method of research arediscussed.2. The main work of investigation and verification include land coverclassification survey and verification, investigation on geographic conditions elements,Additional measurements and investigations on the new and changing classificationand elements, remote sensing interpretation sample collection,etc. Investigation andverification to ensure the authenticity and accuracy of geographic conditions censusresults, improve the quality of geographical conditions census results. There areseveral methods of investigation and verification in the field, Paper playback graph assurvey map in traditional methods. The research method is to use digital surveysystem in the investigation and verification.3. In this paper, using GEOWAY Fielder for geographical conditionsinvestigation and verification system as an example of digital survey system softwareand hardware are researched. The hardware of the system is Lenovo ThinkPad Tablet2tablet computer, tablet computer’s configuration can meet the requirements ofhardware of digital survey system, and the software and hardware compatibility isgood, carrying and operation are Convenient in field. The software of the system isGEOWAY Fielder for geographical conditions investigation and verification system,the characteristics of the system hardware configuration are strong universality, thedata symbols are seamless inside and outside, working scene convenient controlled,GPS real time positioning work position, indoor and field survey model is acombination, investigation and editing is convenient, data quality control is very good.This paper studies the method and process of digital survey system. We need to makeproperty transfer and loading scheme on the base map data before work in the field.the GPS parameters are provided in order to improve the positioning accuracy. We usethe graffiti tools modify and edit field changed classification In the process of surveyand verification.Using GPS with the high resolution image measure and investigate the new and wide range changed classification. The field real photos collected by realaccess tools. The system automatically save the photo camera pose parameters,location information and attribute information. Remote sensing image examplesautomatic cut and saved by the system according to the relevant attribute informationof ground real photos. Real photos and remote sensing image examples are stored inthe file mode, the file name is performed by the system according to the geographicalconditions survey automatic. Multimedia tools of the system can be used foracquisition of geographic conditions elements, multimedia tools for collecting savesoperation time, outside the industry, avoiding manual recording errors, improve thework efficiency and the accuracy of result.4. This paper use the table form according to the survey mission with practicalexamples explain land cover classification content and acquisition indicator,geographic conditions elements collection content and indicator. Digital surveysystem is able to complete all the work in the investigation and verification. Based onthe investigation of practical examples, this paper introduces the application of digitalsurvey system in remote sensing interpretation sample collection and geographicconditions elements investigation when the survey and verification in the wild. In thispaper, the digital survey system and the traditional investigation methods arecompared in the survey map preparation, annotation track acquisition, Additionalmeasurements and investigations outside, remote sensing interpretation samplecollection, indoor data processing, quality control and other aspects, digital surveysystem embodies the advantages of itself. Digital survey system has the advantages ofsimple operation, convenient carrying, data preparation time is short, low cost, fieldoperation labor intensity is small, high degree of automation, convenient storage andbackup.5. Obtained by the results of research projects, summarizes the highlight ofinternal and external integration of digital survey system, application prospect of thesystem is forecast.Verified by practice of the census project, the digital survey system used ininvestigation and verification in the field, saving manpower and material resources,improving the efficiency and quality of survey results, provides a methodology for theimplementation of geographic conditions survey and similar monitoring project.