| 摘要 |
<p>The invention relates to a guiding positioning method in which location information and bearing of the user of a positioning device are determined based on signals sent by positioning satellites. The user is instructed to act in a suitable way when the bearing is being determined. The method further includes determining a confidence parameter that indicates the reliability of the communicated bearing and is communicated to the user simultaneously with the bearing. The confidence parameter enables the user to estimate whether or not the communicated bearing information can be trusted. The confidence parameter can be determined for example from the number of positioning satellites connected to the satellite receiver and the determined traveling speed of the user of the positioning device, or from the dilution of precision provided by the GPS system. The confidence parameter gets a value "good", when an equation is true, and a value "bad", when the equation is false. The method according to the invention can be implemented with a software program loaded into the memory of an electronic terminal. The software program can be stored on storage medium as a separate computer program product, and from there it can be loaded into the memory of the electronic terminal that includes a satellite signal receiver.</p> |
