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Study on Application of Handheld GPS in Acceptance Verification about Land Consolidation Project

Author: WangKeXiao
Tutor: WangPeiXian
School: Liaoning Technical University
Course: Geodesy and Survey Engineering
Keywords: Land Consolidation Handle Machine Conformity Accuracy Positioning Accuracy Error Correction
CLC: P228.4
Type: Master's thesis
Year: 2011
Downloads: 57
Quote: 0
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Abstract


The GeoXH handheld provides real-time subfoot (<30 cm) accuracy with the internal antenna, or decimeter (10 cm / 4 inch) accuracy after postprocessing. Decimeter accuracy can be achieved in real-time with the optional Tornado? external antenna. Because high accuracy positions are available in real-time, you can track down buried and hidden assets with ease, and excavate cables and pipes without wasted effort or risk of damage to nearby assets. Back-office data processing is eliminated, streamlining asset inventories and as-built mapping jobs. When you postprocess with Trimble office software you can be confident of achieving decimeter level accuracy with greater consistency at longer baselines, in tougher environments, and with shorter occupations.The external coincide precision of model parameter solved by the three existent points evenly distributed in measuring area is higher than the check point of model parameter sovled by the two existent points. When the number of existent points can cover the whole measuring region, there will be the higher accuracy. And it also means that the external coincide precision of model parameter will be within the mm magnitude in the condition that the evenly distribution and higher precision of the relative position between the existent point and existent point. Positioning accuracy of handle machine can reach 30 cm more or less by the higher accuracy of existent point and suitable converting parameters. In a conclusion, this paper can improve that the accuracy of handle GPS can meet the demand of measuring accuracy index of acceptance and verification requirements, which requested by the land consolidation project.

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Geodesy > Satellite geodesy and space geodesy > Global Positioning System (GPS)
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