Patent ID: 9568610
Date: 2017-02-14
CPC Classifications: G01S

Claim:
1. A positioning method of estimating a position of a terminal by being connected with a plurality of positioning resources, comprising: estimating, by a positioning apparatus, a position of a user and calculating reliability of an estimated position of the user for the estimated position of the user, based on a first reference position depending on a first absolute coordinate position received from a positioning resource; calculating, by the positioning apparatus, a second reference position and reliability of the second reference position, based on a second absolute coordinate position received from the positioning resource; determining, by the positioning apparatus, whether the reliability of the second reference position satisfies a preset reference position update reference; updating, by the positioning apparatus, a reference position for user position estimation from the first reference position to the second reference position when the reliability of the second reference position satisfies a reference position update reference; and newly estimating, by the positioning apparatus, the position of the user based on the updated second reference position and calculating reliability of the estimated position of the user for the estimated position of the user, wherein the reliability of the second reference position is corrected based on a weight that is calculated based on environmental characteristics for the position of the user and kinds of positioning systems which are the positioning resources providing the absolute coordinate position.