Satellite navigation method
First Claim
1. A satellite navigation method for a mobile station, wherein the geographic position of the mobile station is determined using a receiving and evaluating unit for the reception and evaluation of satellite navigation signals disposed in the mobile station, said method comprising the steps of:
- installing a plurality of reference marks whose geographic positions are known along a possible route of the mobile station;
detecting the reference marks with a reading device installed in the mobile station;
upon detection of a reference mark by the reading device, supplying the known position of the reference mark to the evaluating unit and, from this known position, determining a known reference position for a satellite receiving antenna for the mobile station, and simultaneously determining the associated actual geometric ranges from predetermined, receivable navigation satellites for the reference position;
upon detection of the reference mark, simultaneously determining pseudoranges of the reference position from the predetermined, receivable navigation satellites by satellite navigation using the receiving and evaluating unit;
comparing the pseudoranges with the associated actual ranges for the mobile station at the reference mark, and providing range correction value from the comparison;
at positions between two reference marks, determining further pseudoranges for momentary positions for the mobile station only by satellite navigation, and correcting these further pseudoranges with the correction values; and
,determining a momentary position of the mobile station from the corrected further pseudoranges, as needed.
2 Assignments
0 Petitions
Accused Products
Abstract
A satellite navigation method for a mobile station which is installed, in particular, in a traffic route-guided vehicle. Several reference marks are installed along the traffic route at predetermined distances from one another, with the geographic positions of the reference marks being known or supplied to a mobile station passing a reference mark. The reference marks are detected by a reading device which is disposed in the mobile station. At the location of a reference mark and at the moment of its detection, the actual ranges and the pseudoranges from all satellites that are relevant for navigation are determined simultaneously and are compared. The measuring error change of the satellite navigation or the adjustment of the correction value maybe carried out with the aid of a velocity indicator and a route map mounted on the mobile station. From these, correction values are derived which are used for a pseudorange correction outside of the range of the reference marks. The method permits a (navigational) precision corresponding to a differential navigation method without necessitating communication with a stationary reference station.
14 Citations
12 Claims
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1. A satellite navigation method for a mobile station, wherein the geographic position of the mobile station is determined using a receiving and evaluating unit for the reception and evaluation of satellite navigation signals disposed in the mobile station, said method comprising the steps of:
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installing a plurality of reference marks whose geographic positions are known along a possible route of the mobile station; detecting the reference marks with a reading device installed in the mobile station; upon detection of a reference mark by the reading device, supplying the known position of the reference mark to the evaluating unit and, from this known position, determining a known reference position for a satellite receiving antenna for the mobile station, and simultaneously determining the associated actual geometric ranges from predetermined, receivable navigation satellites for the reference position; upon detection of the reference mark, simultaneously determining pseudoranges of the reference position from the predetermined, receivable navigation satellites by satellite navigation using the receiving and evaluating unit; comparing the pseudoranges with the associated actual ranges for the mobile station at the reference mark, and providing range correction value from the comparison; at positions between two reference marks, determining further pseudoranges for momentary positions for the mobile station only by satellite navigation, and correcting these further pseudoranges with the correction values; and
,determining a momentary position of the mobile station from the corrected further pseudoranges, as needed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification