Theoretical concept for a mobile underwater radio-navigation system using pseudolite buoys

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Abstract

Reliable and accurate positioning underwater has been the goal of many research activities in the last years. In this paper, we present our design of a self-maintainable underwater navigation system, which provides a simple, low-cost, and flexible solution. In our concept, a set of buoys is equipped with Global Navigation Satellite System (GNSS) receivers as well as underwater pseudolite signal transmitters. Therefore, the buoys are able estimate their position and transmit this information underwater through a pseudolite signal. We particularly designed this signal for underwater ranging for both fresh and salt water. Any suitable underwater receiver is then able to do ranging via these pseudolite signals. In this paper, we theoretically analyze and test our concept using several buoy distributions and diving depths. The optimal arrangement of buoys is determined in terms of accuracy and availability depending on the number of available buoys and targeted water depth for an efficient operation. For example, at a targeted depth of 30 m in fresh water, a maximum horizontal position root-mean-square (RMS) error of less than 3 m can be achieved with a set of five buoys providing a service radius of up to 72 m.

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APA

Grosch, A., Enneking, C., Greda, L. A., Tanajewski, D., Grunwald, G., & Ciećko, A. (2020). Theoretical concept for a mobile underwater radio-navigation system using pseudolite buoys. Remote Sensing, 12(21), 1–23. https://doi.org/10.3390/rs12213636

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