Collection System Study Of Agriculture Survey Data Based On Technique Of PDA

In recent years, Great progress has been made in the field of agricultural science and technology while the collection of agricultural survey data is still relatively lagged. So, the improvement of collection method and management level, especially applying information technology to set up a set of collection system of agricultural collection data, is on the way.The study has taken eSupermap as GIS platform, Embedded Visual C++ as tools of system development. A lot of techniques such as the idea of the OOP, SQL and the relation data memory to realize the program's transplant in the process of program's arithmetic design and the normalization of data has been applied in our study, thus improving the stability of collection system.Our study is to improve the collection method of agricultural survey data, and a set of collection system of agriculture surveying, data based on the GPS/PDA technology, was finished. During the process of designing system, we pay more attention to the seamless integration among GPS data, attribute data and the collection system. To improve the automatization of agriculture survey data collection, the study have referred to the use of GPS and GIS in vehicle navigation, filed geographic data collection and communication management. Collection and storing scheme was designed and the location positioning and real-time communication has finished. At the same time, the protected interface to vector file of outer GIS is provided in the system, which in some degree, solve the problem of the GIS's use among different platforms.