A Novel Network RTK Technique for Mobile Platforms: Extending High-Precision Positioning to Offshore Environments

• Autorzy: Chen Wu , Ding Junsheng , Wang Yuyan , Mi Xiaolong , Liu Tong

Identyfikatory

DOI

10.12716/1001.19.02.04

• Języki publikacji: EN

Abstrakty

EN

Network Real-Time Kinematic (NRTK) positioning, as the most mature real-time high-precision positioning technology, is widely recognized for its centimetre-level accuracy, operational efficiency, and extensive application potential. However, conventional NRTK systems rely on reference stations anchored to bedrock-based infrastructure, limiting their coverage to terrestrial areas within Continuous Operating Reference Station (CORS) networks. This architectural limitation renders conventional NRTK inapplicable for offshore and marine environments. To overcome this geographical constraint, we propose an innovative NRTK framework for mobile platforms featuring (1) simultaneous estimation of atmospheric delays and baseline dynamics to get precise relative coordinate movements, (2) the regularization method is applied to de-correlate the positional and atmospheric parameters and the regularization coefficients are optimized by mean square error minimization, and (3) integration of Precise Point Positioning (PPP) at a main base station to maintain an absolute position reference for the network. Experimental validation using Hong Kong's terrestrial CORS network demonstrates that the proposed marine-adapted system achieves positioning accuracy comparable to conventional bedrock-based NRTK, with three-dimensional (ENU) errors measuring (2.90, 3.22, 4.32) cm and (2.90, 2.88, 6.70) cm in two operational scenarios. This methodological advancement enables the deployment of buoy-based NRTK systems in marine environments, with significant implications for maritime applications including port traffic management, fishing fleet navigation, and offshore resource exploration. By extending NRTK's operational domain beyond terrestrial boundaries, our technique not only enhances positioning reliability for marine operations but also creates new paradigms for oceanic resource management.

Słowa kluczowe

EN

safety at sea; environment protection; navigational safety; meteorological conditions; Navigation; GNSS; Global Navigation Satellite System; European Geostationary Navigation Overlay Service; EGNOS; ports and harbours

• Wydawca: Faculty of Navigation, Gdynia Maritime University
• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2025
• Tom: Vol. 19 No. 2
• Strony: 371--380
• Opis fizyczny: Bibliogr. 53 poz., rys., tab.

Twórcy

autor

Chen Wu

• The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong

• https://orcid.org/0000-0002-1787-5191

autor

Ding Junsheng

• The Hong Kong Polytechnic University, Hong Kong

• https://orcid.org/0000-0001-9693-4999

autor

Wang Yuyan

• The Hong Kong Polytechnic University, Hong Kong

autor

Mi Xiaolong

• The Hong Kong Polytechnic University, Hong Kong

• https://orcid.org/0000-0003-2950-3472

autor

Liu Tong

• The Hong Kong Polytechnic University, Hong Kong

• https://orcid.org/0000-0002-5300-8060

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