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Tomasz Neumann
 

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TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
www http://www.transnav.eu
e-mail transnav@am.gdynia.pl
Fuzzy Evidence in Terrestrial Navigation
1 Gdynia Maritime University, Gdynia, Poland
ABSTRACT: Measurements taken in terrestrial navigation are random values. Mean errors are within certain ranges what means imprecision in their estimation. Measurements taken to different landmarks can be subjectively diversified. Measurements errors affect isolines deflections. The type of the relation: observation error ? line of position deflection, depends on isolines gradients. All the mentioned factors contribute to an overall evidence to be considered once vessel?s position is being fixed. Traditional approach is limited in its ability of considering mentioned factors while making a fix. In order to include evidence into a calculation scheme one has to engage new ideas and methods. Mathematical Theory of Evidence extended for fuzzy environment proved to be universal platform for wide variety of new solutions in navigation.
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Citation note:
Filipowicz W.: Fuzzy Evidence in Terrestrial Navigation. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 5, No. 2, pp. 225-232, 2011

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