Design and Realization of Land-Use Survey System Based on GPS/TSI/PDA

In order to solve the conflict between the requirement of high precision and efficiency in land-use surveying work in China, and the disadvantages of existing method, an approach for land-use survey has been designed and a software system that run in PDA environment has been implemented with GPS/TSI integration. GPS RTK positioning, TSI signal acquisition and processing have been realized. Also to avoid the trouble of GPS signal shading and laying TSI reference points, a coordinate transformation method, which sets some common points as control, has been researched in order to improve both precision and efficiency in land-use surveying work.