基于RT-P P P技术的船体及浮标定位系统

高精度GNSS定位是海上勘探作业质量保障的核心技术之一。随着海洋石油勘探作业逐步走向深海领域,传统的岸基差分定位,由于需要依靠岸台基准站向船上发送差分信号,已无法满足远海定位的需求。本文通过对中海油田服务股份有限公司自主研发的"海星"船体以及浮标定位系统进行研究,提出了一种基于实时精密单点定位RT-PPP技术的坐标解算方法;并进行了陆地静态试验及海上拖缆地震勘探作业动态试生产实验。实验结果表明,系统的定位精度均优于1 m,系统的定位精度及可靠性能够满足海上拖缆地震勘探作业需要。

Vessel and Buoy Positioning System Based on RT-PPP

High precision global satellite positioning system is one of the key technology for marine towed streamer seismic exploration operation quality. As offshore oil exploration operations gradually move into the deep sea, the traditional shore-based differential positioning which rely on the shore reference station to send differential signals to the ship, cannot meet the needs of positioning. In this paper, the "HQI-Star" vessel and buoy positioning system is introduced, which is researched and designed independently by China Oilfield Services Ltd. A high precision coordinate calculate method based on real-time precise point positioning is proposed in the system, and the static experiment on land and the dynamic experiment offshore are carvied out, The system positioning accuracy is better than 1 meter. The experiment results verify the positioning accuracy and reliability of the system,which can satisfy the need of marine towed streamer seismic exploration operation.