<abstract xmlns="http://www.w3.org/1999/xhtml"><p> An essential aspect of the safety of navigation is avoiding collisions with other vessels and natural or man made navigational obstructions. To solve this kind of problem the navigator relies on automatic anti-collision ARPA systems, or uses a geometric method and makes radar plots. In both cases radar measurements are made: bearing (or relative bearing) on the target position and distance, both naturally expressed in the polar coordinates system originating at the radar antenna. We first convert original measurements to an ortho-Cartesian coordinate system. Then we solve collision avoiding problems in rectangular planar coordinates, and the results are transformed to the polar coordinate system. This article presents a method for an analysis of a collision situation at sea performed directly in the polar coordinate system. This approach enables a simpler geometric interpretation of a collision situation </p></abstract>

An essential aspect of the safety of navigation is avoiding collisions with other vessels and natural or man made navigational obstructions. To solve this kind of problem the navigator relies on automatic anti-collision ARPA systems, or uses a geometric method and makes radar plots. In both cases radar measurements are made: bearing (or relative bearing) on the target position and distance, both naturally expressed in the polar coordinates system originating at the radar antenna. We first convert original measurements to an ortho-Cartesian coordinate system. Then we solve collision avoiding problems in rectangular planar coordinates, and the results are transformed to the polar coordinate system. This article presents a method for an analysis of a collision situation at sea performed directly in the polar coordinate system. This approach enables a simpler geometric interpretation of a collision situation

Determination of Ship Approach Parameters in the Polar Coordinates System

West Pomeranian University of Technology Faculty of Computer Science and Information Technology Szczecin, Poland

Institute of Marine Navigation, Maritime University of Szczecin Szczecin, Poland

Reports on Geodesy and Geoinformatics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Determination of Ship Approach Parameters in the Polar Coordinates System"}

An essential aspect of the safety of navigation is avoiding collisions with other vessels and natural or man made navigational obstructions. To solve this kind...

Determination of Ship Approach Parameters in the Polar Coordinates System

Published Online: Jul 26, 2014

Page range: 1 - 8

DOI: https://doi.org/10.2478/rgg-2014-0001

Keywords
safety of navigation, maritime navigation, navigational mathematics, ARPA, EPA

© 2014

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Determination of Ship Approach Parameters in the Polar Coordinates System

Published Online: Jul 26, 2014

Page range: 1 - 8

DOI: https://doi.org/10.2478/rgg-2014-0001

Keywordssafety of navigation, maritime navigation, navigational mathematics, ARPA, EPA

© 2014

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
safety of navigation, maritime navigation, navigational mathematics, ARPA, EPA