Joint road matching method and device based on curve fitting and network topology
A network topology and curve fitting technology, applied in the field of joint road matching, can solve the problems of trajectory positioning deviation on the road where the confirmed cases stay, unable to effectively analyze the trajectories of the confirmed cases staying on the road and travel road, and low positioning accuracy.
Active Publication Date: 2022-03-22
上海飞旗网络技术股份有限公司
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[0003] In the traditional solution, in order to provide better services, various application software in the user terminal usually collect a large number of user location information, but the traditional solution usually only uses CELL-ID (cell identification code) for location positioning
This solution, on the one hand, has low positioning accuracy. On the other hand, in urban environments, pedestrian travel is usually limited to roads, which may make it difficult to effectively determine the specific stay of confirmed cases in complex road environments due to trajectory positioning deviations. roads, resulting in the inability to effectively analyze the trajectories of the confirmed cases' stay roads and travel roads
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[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, 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. It should be understood that the appended The figures are only for the purpose of illustration and description, and are not used to limit the protection scope of the present application. Additionally, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented in accordance with some of the embodiments of this application. It should be understood that the operations of the flowcharts may be performed out of order, and steps that have no logical context may be performed in reverse order or concurrently. In addition, those skilled in the art may add one or more other oper...
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The embodiment of the present application provides a joint road matching method and device based on curve fitting and network topology, which uses the current matching point position of the user terminal and the position corresponding to the current matching point position to fit a straight line, and according to each road network in the road network For the topological relationship between roads, the sequence of candidate road segments associated with the current matching point position of the user terminal is determined from the pre-established road database. Then, determine the matching road corresponding to the current matching point position from the candidate road segment sequence according to the position fitting straight line, and obtain the matching road track of the user terminal according to the matching road corresponding to each matching point position of the user terminal. In this way, the user's road trajectory can be effectively determined in a complex road environment, which can facilitate the effective analysis of the user's stay road and travel road trajectory rules, which is helpful for the prevention and control of the epidemic.
Description
technical field [0001] The present application relates to the technical field of big data analysis, in particular, to a joint road matching method and device based on curve fitting and network topology. Background technique [0002] User terminals (such as smartphones, smart wearable terminals, etc.) have played a key role in more and more epidemic prevention and control as carriers and tools for people diagnosed with the epidemic. The location information of user terminals has become the key to breakthroughs in epidemic prevention and control. Essential elements for grasping and analyzing the epidemic situation. Based on this, by accurately analyzing the rules of the stay road and travel road trajectory of confirmed cases, the existing methods and means of epidemic prevention and control can be expanded and enriched. [0003] In the traditional solution, in order to provide better services, various application software in the user terminal usually collect a large number of...
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IPC IPC(8): H04W4/029H04W4/30
CPCH04W4/029H04W4/30
Inventor 杨贻宏
Owner 上海飞旗网络技术股份有限公司