| 摘要 |
A method of determining a geographic position of a user terminal (110) comprising a receiver (210) of signals of a global navigation satellite system (105), the method comprising having the user terminal: performing pseudo-range measurements related to a plurality of signals received from transmitters of the global navigation satellite system; calculating (315,320) a first estimated position thereof by means of a weighted least square method; calculating post-fit residuals for the first estimated position; comparing the calculated post-fit residuals to a first threshold and: in case the first threshold is exceeded, calculating a second estimated position using a Monte-Carlo method, otherwise retaining the first estimated position as the geographic position of the mobile communications terminal. |
