GUIDING POSITIONING METHOD, POSITIONING DEVICE AND COMPUTER PROGRAM PRODUCT
First Claim
1. A guiding positioning method, in which with a positioning device, that includes a satellite receiver, a positioning signal from several positioning satellites is received, a bearing of the user of the positioning device is determined using the received positioning signals, and the defined bearing is communicated to the user of the positioning device, characterized in that in the method a confidence parameter representing the reliability of the bearing is determined based on the received positioning signals, which confidence parameter is communicated to the user of the positioning device.
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Accused Products
Abstract
A method in which location information and bearing of the user of a positioning device are determined based on signals sent by positioning satellites. The user is instructed to act in a suitable way when the bearing is being determined. The method further determines a confidence parameter that indicates the reliability of the communicated bearing and is communicated to the user simultaneously with the bearing. The confidence parameter enables the user to estimate whether or not the communicated bearing information can be trusted. The confidence parameter can be determined from the number of positioning satellites connected to the satellite receiver and the determined traveling speed of the user of the positioning device, or from the dilution of precision provided by the GPS system. The confidence parameter gets a value “good”, when an equation is true, and a value “bad”, when the equation is false.
21 Citations
18 Claims
- 1. A guiding positioning method, in which with a positioning device, that includes a satellite receiver, a positioning signal from several positioning satellites is received, a bearing of the user of the positioning device is determined using the received positioning signals, and the defined bearing is communicated to the user of the positioning device, characterized in that in the method a confidence parameter representing the reliability of the bearing is determined based on the received positioning signals, which confidence parameter is communicated to the user of the positioning device.
- 8. A positioning device that comprises an electronic terminal, having a display, a memory, a processor, a satellite receiver for receiving positioning signals, and means for determining a bearing of the user of the positioning device, characterized in that the device further comprises means for determining, based on the received positioning signals, a confidence parameter that represents the reliability of the determined bearing, and for communicating the confidence parameter to the user.
- 12. A computer program product that comprises computer program means, stored on computer readable medium, for determining a bearing of the user of a positioning device using positioning signals sent from positioning satellites, and for communicating the bearing to the user of the positioning device, characterized in that the computer program product further comprises computer program means for determining, based on the received positioning signals, a confidence parameter that represents the reliability of the determined bearing, and for communicating the confidence parameter to the user.
Specification