A method and device for establishing a geomagnetic fingerprint map
A fingerprint map, geomagnetic technology, applied in the direction of ground navigation, etc., can solve the problems of high management cost and high labor cost, and achieve the effect of saving cost and management cost.
Active Publication Date: 2019-12-27
ALIBABA GRP HLDG LTD
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Problems solved by technology
[0005] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: the existing method for establishing a geomagnetic fingerprint map requires technicians to go to each target area where a geomagnetic fingerprint map needs to be established to collect geomagnetic signals, and the labor cost is relatively high. At the same time, if the geomagnetic signal changes due to the change of the indoor decoration, technicians need to go to the area where the geomagnetic signal has changed to collect the geomagnetic signal again; therefore, the existing method of establishing a geomagnetic fingerprint map has high management costs
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Embodiment Construction
[0032] Embodiments of the present application provide a method and device for establishing a geomagnetic fingerprint map.
[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0034] figure 1 It is a flow chart of an embodiment of the method for establishing a geomagnetic fingerprint map in this application. Such as figure 1 As shown, the shown method for establishing a geomagnetic fing...
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The embodiment of the invention discloses a method and device for building a geomagnetic fingerprint map. The method comprises the steps that coordinate position information of different positions in a first area in a target area and navigation data and geomagnetic information at the target position in a second area in the target area are obtained; according to the obtained navigation data and geomagnetic information at the target position in the second area, the coordinate position information and geomagnetic fingerprint at the target position are determined; according to the geomagnetic fingerprint in the second area, a geomagnetic fingerprint map in the second area is built. By means of the method and device for building the geomagnetic fingerprint map, the management cost can be reduced.
Description
technical field [0001] The present application relates to the technical field of geomagnetic positioning, in particular to a method and device for establishing a geomagnetic fingerprint map. Background technique [0002] With the development of mobile communication technology, the use of GPS (Global Positioning System, Global Positioning System) for positioning has been widely used. However, because the GPS positioning signal is weak when it reaches the ground, and the ability to penetrate buildings is poor, the GPS positioning technology is very difficult. Difficult to apply in indoor environment. Therefore, indoor positioning technology has been developed. [0003] Geomagnetic positioning is a relatively new positioning technology that uses geomagnetic field signals for positioning. Since the steel structure in the building will form a soft magnetic field, the location can be realized according to the direction specificity and magnetic field specificity of the indoor mag...
Claims
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IPC IPC(8): G01C21/08
Inventor 沈慧
Owner ALIBABA GRP HLDG LTD