Method for determining the global position
First Claim
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1. A method for increasing accuracy of a global position of a user receiver determined by a navigation system of the user receiver, wherein:
- a global position of a mobile reference receiver is determined by a navigation system of the mobile reference receiver;
at least one stationary landmark is detected by the at least one object detection sensor;
a relative position of the at least one stationary landmark relative to the mobile reference receiver is determined by a sensing system based on data from at least one object detection sensor;
a global position of said at least one stationary landmark in at least one spatial direction is determined based on a digital map;
a position error of the global position of the mobile reference receiver is calculated for at least one spatial direction based on the global position of the at least one stationary landmark, the relative position, and the global position of the mobile reference receiver; and
the position error is transmitted from the mobile reference receiver to the user receiver to increase the accuracy of the global position of the user receiver determined by the navigation system of the user receiver.
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Abstract
The invention relates to a method of increasing accuracy of a global position of a user receiver determined by a navigation system. The global position is corrected based on a position error determined by a mobile reference receiver and transmitted to the user receiver. The invention further relates to a corresponding apparatus.
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Citations
15 Claims
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1. A method for increasing accuracy of a global position of a user receiver determined by a navigation system of the user receiver, wherein:
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a global position of a mobile reference receiver is determined by a navigation system of the mobile reference receiver; at least one stationary landmark is detected by the at least one object detection sensor; a relative position of the at least one stationary landmark relative to the mobile reference receiver is determined by a sensing system based on data from at least one object detection sensor; a global position of said at least one stationary landmark in at least one spatial direction is determined based on a digital map; a position error of the global position of the mobile reference receiver is calculated for at least one spatial direction based on the global position of the at least one stationary landmark, the relative position, and the global position of the mobile reference receiver; and the position error is transmitted from the mobile reference receiver to the user receiver to increase the accuracy of the global position of the user receiver determined by the navigation system of the user receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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determining a global position of a mobile reference receiver via a navigation system; detecting at least one stationary landmark based on data from at least one object detection sensor; determining a relative position of the at least one stationary landmark relative to the mobile reference receiver based on the global position and the data; accessing a digital map to retrieve a stored global position in at least one spatial direction of the at least one stationary landmark; calculating a first position error of the global position of the mobile reference receiver for at least one spatial direction based on the global position of the mobile reference receiver, the stored global position of the at least one stationary landmark, and the relative position; and transmitting the first position error from the mobile reference receiver to a user receiver. - View Dependent Claims (11, 12, 13)
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14. A mobile reference receiver comprising:
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a navigation system that determines a global position of a mobile reference receiver; at least one object detection sensor that generates data based on detection of at least one stationary landmark, wherein the navigation system; determines a relative position of the at least one stationary landmark relative to the mobile reference receiver based on the global position and the data; accesses a digital map to retrieve a stored global position in at least one spatial direction of the at least one stationary landmark; calculates a first position error of the global position of the mobile reference receiver for at least one spatial direction based on the global position of the mobile reference receiver, the stored global position of the at least one stationary landmark, and the relative position; and transmits the first position error from the mobile reference receiver to a user receiver. - View Dependent Claims (15)
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Specification