| 摘要 |
The invention relates to a method for determining an error in the reference time (15) of a receiver (MS) in positioning means (S,MS). In the method, a code modulated signal transmitted by satellites (SV1-SV4) is received the signal being formed with an individual code for each satellite (SV1-SV4). In the method, the time ({circumflex over (T)}ToTk) of transmission of the signal received from every satellite used in the positioning is determined to be used in determining the position of the satellite. To determine a difference between the time ({circumflex over (T)}ToTk) of transmission of the signal and the reference time, positioning is performed, and on the basis of the determined position, an error value (ERR) is calculated. Thus, in the method, a minimum point of the error value is searched for by determining the position of the receiver (MS) with at least two different positions of the satellite corresponding to the time of transmission and by calculating the error value (ERR) for said at least two determined positions for the receiver (MS).
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