Map-matching method based on dynamic virtual crossing in vehicle navigation
A vehicle navigation and map matching technology, applied in the field of vehicle positioning/navigation, to achieve the effect of improving map matching effect and continuous accurate navigation
Active Publication Date: 2011-04-27
TSINGHUA UNIV
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[0004] The purpose of the present invention is to propose a map matching method based on dynamic virtual intersections for current application requirements
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[0017] The map matching method based on the dynamic virtual intersection in the vehicle navigation proposed by the present invention comprises the following steps:
[0018] (1) Construct a set of matching road sections, which is initially empty;
[0019] (2) According to the positioning data of the vehicle in the global satellite positioning system, it is judged whether the current position of the vehicle is in the set virtual intersection, if the vehicle is in the virtual intersection, then add all the virtual road sections of the virtual intersection to the above matching road section set , if the vehicle is not in the virtual intersection, do not operate;
[0020] (3) According to the positioning data of the vehicle in the global satellite positioning system, all road sections within the set range of the vehicle's current location are obtained from the map data where the vehicle's current location is located, defined as adjacent road sections, and the adjacent road sections...
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The invention relates to a map matching method based on a dynamic virtual crossing in the vehicle navigation, belonging to the vehicle positioning / navigating technical field. Firstly, a hollow matching section congregation is established, according to the positioning data of a vehicle in a global positioning system, whether the vehicle is in the virtual crossing is judged, according to the judgment result, the matching section congregation is filled; secondly, the obfuscation synthesized judgment is performed on all sections in the matching section congregation to determine the section where the vehicle positions currently; and finally, the crossing ahead in the current driving direction of the vehicle is obtained according to the section where the vehicle positions currently, and the setvirtual crossing is updated by the crossing data. The method has the advantages that the dynamic virtual crossing is established by the software method under the circumstance that no more demand is made on the map data provided by a map company, the map data inside the crossing is supplemented, the map matching effect in the crossing is improved, and the continuous accurate navigation in the crossing of the vehicle is realized.
Description
technical field [0001] The invention relates to a map matching method based on a dynamic virtual intersection in vehicle navigation, and belongs to the technical field of vehicle positioning / navigation. Background technique [0002] The research on vehicle navigation technology began to rise in the late 1970s. In the late 1980s, the Global Positioning System (hereinafter referred to as GPS) positioning technology was widely used. Since the 1990s, foreign countries have started research on the application of global satellite positioning system / dead reckoning / map matching combined positioning technology in vehicle autonomous navigation. Representative ones are the car navigation system of Pioneer Company of Japan, the vehicle driver information system of Toyota Company of Japan, the Carminat system of Renault of France, and the CarMultimerdia System of Germany. In vehicle navigation system, map matching is one of the key technologies. It links the vehicle positioning track ...
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IPC IPC(8): G01C21/30
Inventor 连小珉杨殿阁张涛郑四发罗禹贡王建强李克强
Owner TSINGHUA UNIV