Accuracy Evaluation of Real-time Kinematic Positioning Service Based on Digital Multimedia Broadcast Network for Highway Construction Site in Korea

초록

The virtual reference system-real-time kinematic (VRS-RTK) method can be used for the precise position monitoring of construction equipment, thus facilitating automation in the construction industry. However, the use of the VRS-RTK method is limited to construction sites where monitoring multiple construction equipment requires constant access to long-term evolution (LTE) data communication, which poses a cost issue and limits connections in accordance with the VRS-RTK service server capacity. To address these challenges, the broadcast real-time kinematic (B'RTK) method was developed. In this study, we aim to evaluate the B'RTK method as a new network RTK positioning service for construction automation in terms of RTK positioning performance and positioning accuracy in various global navigation satellite system (GNSS) reception environments by comparing it with various RTK methods. To assess B'RTK positioning accuracy, simultaneous observation was carried out using postkinematic, single RTK, and VRS methods for each GNSS signal reception environment, and the accuracy of B'RTK positioning was evaluated by comparing the post-kinematic positioning results with other kinematic positioning results. The B'RTK positioning accuracy in actual construction sites is similar or superior to other kinematic positioning methods, including the VRS-RKT method. Therefore, the B'RTK method may be highly useful for the real-time monitoring of construction equipment and construction automation.

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