Method for calculating optimum navigation path and communication navigation apparatus

A navigation path and navigation device technology, applied in the field of communication and navigation, can solve the problems of increased network communication costs, time delay, and delay in the best time to correct the yaw, and achieve the effect of saving network communication costs and saving computing resources
CN101408428AInactive Publication Date: 2009-04-15BEIJING LINGTU SOFTWARE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING LINGTU SOFTWARE TECH CO LTD
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for calculating optimal navigation route and a communicating navigation device thereof. The method comprises: obtaining the current position of a navigation terminal and judging whether yawing exists, if yes, calculating the optimal navigation route from the current position of the navigation terminal to an original destination according to navigation data stored in the navigation terminal; the navigation data comprises an original navigation route and the optimal navigation route includes a first route from the current position of the navigation terminal to a backtracking point and a second route from the backtracking point to the backtracking destination; the backtracking point and the backtracking destination are both arranged in the original navigation route. The invention solves the problem that the navigation terminal needs to request a new navigation route from a sever again when in yawing, thus leading the cost of network communication to be increased in the existing communicating navigation technology, and the problems of the time delay and the optimal correction yawing time delay caused by recalculating and transmitting navigation data.
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Description

technical field

[0001] The invention relates to the field of communication and navigation, in particular to a method for calculating an optimal navigation path and a communication and navigation device. Background technique

[0002] At present, with the development of communication and geographic information technology, communication and navigation technology is being widely used in more and more fields, such as land driving, field travel, and even navigation and aviation.

[0003] Newsletter navigation usually involves three entities, such as figure 1 As shown, including server S, network and navigation terminal A. see below figure 1 , taking land road navigation as an example to describe the existing communication navigation process:

[0004] First, the navigation terminal A sends navigation request information to the server S, the navigation request information includes the starting point and the destination; the server S calculates the navigation route according to th...

Claims

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