Study Of The Application To GPS In City Surveying Controlling Network

The dissertation introduced basic construction of GPS and adjustment principle of GPS satellites controlling network, combined actual examples to study application of GPS in city surveying controlling network.The dissertation generally introduced the basic construction and technology characteristic satellites signal working mode of GPS, advantage and shortcoming of GPS and application field of GPS in surveying field, expressed the problems in high accuracy GPS positioning data processing and strategy should be adopted. The paper expressed basic method of GPS positioning and type of observation quantity, focal point explained code measurement false distance observation equation,carrier wave phase observation equation and static relative positioning observation equation. The dissertation described advantage of GPS surveying controlling network, explained general rule of GPS surveying controlling network technique design, graph design substance of GPS surveying controlling network and adjustment principle of GPS satellites controlling network.The paper analyzed that observation satellites geometry be distributed produced influence to absolute positioning and relative positioning, reliance checking index and method of GPS baselines fruit, exact problem of GPS baselines solution, efficiency measure of promoting precision of GPS surveying controlling network, analyzed that influence was applied by network graph shape and observation method combining with city controlling network actual sample analysis, summed up GPS controlling network surveying work procedures and methods of suiting to city.Conclusion and suggestion overall dissertation was obtained, main substance was that:When large area region GPS surveying controlling network was distributed, GPS continuous moving tracking station should be as far as possible established, so vehicle fees were reduced more than 50%, repetition amount setting up stations...