| 摘要 |
The invention relates to a method of estimating the clock-position of a GNSS receiver based on pseudorange measurements Á i of a group of epochs i of measurement, i =1,..., N , where M ¡ is the number of pseudorange measurements in the epoch i ; the method comprises:
- constructing a floating path from change of state estimations V i between successive epochs which are provided as input by a change of state estimation algorithm;
- determining an anchor point for said path by anchor point for said path by an iterative least squares process estimating the state vector S 1 of the receiver in a preestablished anchor epoch within the measurement epochs of the path, said least squares process being carried out by means of a valid observation matrix H for the N epochs defining said floating path, said observation matrix H being constructed by juxtaposing the observation matrices H i associated to different epochs i =1,..., N , wherein each observation matrix H i is a four-column matrix the rows of which are the line of sight unit vectors of the different satellites in sight in the epoch i , juxtaposed with a 1 associated to the receiver clock component.
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