Quick positioning method and device

Abstract

The invention discloses a quick positioning method and device, which belong to the field of navigation. The method comprises the following steps of: acquiring signals, which are transmitted by a plurality of base stations, received by a terminal at an area to be measured of an electronic map, and acquiring the base station which is nearest to the terminal according to the signals transmitted by the base stations; acquiring the similarity of all minimum geographic areas covered by the nearest base station according to the nearest base station and preset base station coverage database and characteristic parameter database, and locking the primary position of the terminal to the minimum geographic area according to the similarity of all the minimum geographic areas, wherein the minimum geographic area is specifically a building or a road; and positioning the position of the terminal to a grid according to the minimum geographic areas and a preset grid characteristic database. In the invention, the positioning is performed by taking the base station as a starting point, so that the positioning range is quickly reduced; and the positioning is performed by using a grid concept after the area is primarily positioned, so that the positioning efficiency is increased.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a device for a fast positioning method. Background technique [0002] Geographical location information is important information that is closely related to people's lives. With the acceleration of the pace of modern life, geographical location information is playing an increasingly important role. The electronic map is a map that stores geographic location information in vector images, and can display latitude and longitude, altitude, heading, etc. The scale can be enlarged or reduced without affecting the display effect. People can locate their exact location according to the electronic map. [0003] Traditional positioning usually uses the handheld terminal to receive the positioning information, and directly calculates the position information through the built-in calculation module. This positioning method has a small amount of data, but the positioning accuracy is low, and it is ea...

AI Technical Summary

Problems solved by technology

[0003] Traditional positioning usually uses the handheld terminal to receive the positioning information, and directly calculates the position information through the built-in calculation module. This positioning method has a small amount of data, but the positioning accuracy is low, and it is easily affected by factors such as the external environment; With the development of high-precision positioning systems, positioning methods such as AGPS or broadcasting networks appear. These positioning methods often have a huge map database, including geographic information and positioning parameters corresponding to geographic information. Quickly matching the data content related to the user's location in the huge database is the key to achieving high-precision and fast positioning

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