Update method of mobile object location based on traffic network and GPS

A technology of moving objects and updating methods, applied in the field of mobile computing, can solve the problem of increasing the cost of communication and computing, difficult to overcome the processing accuracy and communication costs and processing efficiency, and the position updating method does not fully consider the interaction relationship between mobile objects and traffic networks And other issues
CN100542330CInactive Publication Date: 2009-09-16INST OF SOFTWARE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF SOFTWARE - CHINESE ACAD OF SCI
Publication Date
2009-09-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

In order to enable the central server to track the past and present positions of the mobile object, the present invention provides a method for updating the position of the mobile object based on the traffic road network and GPS: the mobile object uses GPS equipment to continuously measure its latest operating parameters, The matching of the road network converts the latitude and longitude position and direction data into a data representation based on the road network, and then according to the "inertia principle", compares the current running vector with the running vector submitted during the last position update, and judges the position update. condition, the current running vector is reported to the central server only when the moving object no longer maintains the inertial running rule. In addition, the present invention also optimizes the position update for the intersection, so that the mobile object only performs position update once in the intersection area at most. Compared with the existing location update method, this method can reduce the communication frequency and improve the efficiency of data processing under the premise of ensuring the processing accuracy.
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Description

technical field

[0001] The invention relates to a method for individual mobile objects to report their own position, speed, direction and other information to a central server in the field of mobile computing, and to enable the central server to track the past and current positions of the mobile object throughout the process. Background technique

[0002] In the past ten years, mobile computing technology has developed rapidly. More and more applications require the management of the dynamic location of moving objects (such as cars, airplanes, ships, mobile users, etc.), and one of the core problems that needs to be solved is how the central server can efficiently, accurately and timely obtain the location of moving objects. The latest location information. The location tracking mechanism is usually to install some kind of positioning device (such as the global positioning system GPS) on the moving object. Through the wireless communication interface and a certain location ...

Claims

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