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Navigation method

A navigation method and technology of a navigation device are applied in the field of navigation to achieve the effects of accurate dead reckoning and accurate positioning information

Inactive Publication Date: 2010-08-25
MITAC COMP (SHUN DE) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that in the prior art, when the positioning module cannot receive a signal or the signal is weak, and cannot locate or obtain an accurate absolute coordinate, the processor will switch to the dead reckoning mode for positioning

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Embodiment Construction

[0017] Embodiments of the present invention provide a navigation device and the implementation thereof, which will be described in detail below through specific embodiments.

[0018] Referring to FIG. 2 , it is a navigation device 300 applying the navigation method of the present invention, which includes a positioning module 320 , a dead reckoning module 330 , a storage module 340 , and a processing module 350 .

[0019] The positioning module 320 can operate based on different positioning systems, including Global Positioning System (Global Positioning System, GPS), Assisted Global Positioning System (Assisted Global Positioning System, AGPS), Differential Global Positioning System (Differential Global Positioning System, DGPS), Carrier Phase Differential Global Positioning System (Carrier Phase Differential Global Positioning System, CDGPS), Galileo Positioning System (Galileo Positioning System) and GLONASS system (Global navigation satellite system, GLONASS).

[0020] The...

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Abstract

The invention relates to a navigation method suitable for a navigation device. The method comprises the following steps of: firstly, loading map information by the navigation device, wherein the map information contains a map file and at least one dead reckoning section on; then, receiving and decoding a group of positioning signals by the navigation device to acquire an absolute coordinate and mapping the absolute coordinate to the map file to acquire the current position of the navigation device so as to acquire a planning path; finding the dead reckoning section through which the planning path passes and continuously judging whether the relative distance between the current position and the dead reckoning section to be past is within a limited valve; starting to execute dead reckoning to acquire relative displacement when the relative distance is within the limited valve and acquiring the current position again according to the relative displacement and the absolute coordinate.

Description

【Technical field】 [0001] The present invention relates to a navigation method, in particular to a navigation method capable of pre-adjusting calculation weights of a Global Positioning System (GPS) module and a Dead Reckoning (DR) module. 【Background technique】 [0002] The positioning system sends positioning signals from multiple positioning signal sources, and then the receiving end receives the positioning signals, and calculates the position of the receiving end by means of triangulation and other methods. Take the Global Positioning System (GPS) as an example. In the GPS system, 24 satellites are set in the geosynchronous orbit, which send positioning signals relative to the fixed satellites on the surface, and the navigation device on the surface receives at least three satellites. The positioning signal, the longitude and latitude coordinates of the navigation device can be calculated by the triangulation method. In the past, GPS was limited to military and industri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/26G01C21/34
Inventor 曾译醇
Owner MITAC COMP (SHUN DE) LTD
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