Abstract: In view of the disadvantages of traditional manual periodic inspection, a dynamic monitoring model for arm-tip of construction tower crane based on satellite positioning is proposed. Taking GPS for example, the single-epoch fast positioning model is built. The flowchart of fast integer ambiguity resolution algorithm based on DUFCOM and DC algorithm is given. And a construction method of monitoring parameters and early-alarm parameters of vertical-deviation for arm-tip based on location-deviation of epoch is proposed. The preliminary experimental results show that the horizontal-RMS is better than 2 cm and the vertical-RMS is better than 4 cm via GPS single-epoch fast positioning model. Based on the positioning results, the feasibility and effectiveness of the proposed model are verified from the monitoring parameters and early-alarm parameters.

Key words: satellite positioning system, single-epoch positioning model, dynamic monitoring model, early-alarm parameters, construction tower crane