Navigation apparatus capable of correcting position data according to map matching position and method thereof
US8082094B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2008 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Oct 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention discloses a navigation apparatus correcting position data according to a map matching position and a method thereof. The navigation apparatus includes a satellite positioning module, an electronic map database, a map matching module and a correction module. The satellite positioning module provides a plurality of position data. The electronic map database stores at least one map data. The map matching module matches a position data with a map data to generate a map matching position corresponding to the position data. The correction module provides at least one turning point, and each turning point is situated at the map matching position to form an turning angular. If the turning angular exceeds a threshold value, the correction module calculates a position data and a map matching position statically collected within a predetermined time according to an algorithm to generate an offset to correct the position data behind the turning point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.