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MAP-BASED ON-THE-FLY LOCATION REFERENCING.
| 题名： | MAP-BASED ON-THE-FLY LOCATION REFERENCING. |
| 作者： | Weavers-K; hendriks-T; Pfeiffer-HW; Duckeck-R; Hebling-H; Otto-HU |
| 关键词： | Data-collection; Geographic-information-systems; Global-Positioning-System; Information-technology; Intelligent-transportation-systems; Location-; Maps-; Navigational-aids; Real-time-information; Route-guidance |
| 摘要： | Much information is related to real-world objects. Location referencing is a traffic telematics technology to reference real-world objects (locations) between different systems (provider, end user) in a machine-readable way. Examples of locations are stretches of the road network (linear locations) and points-of-interest (point locations). The only really successful system for the provision of traffic information is RDS-TMC, which is currently in operation in many European countries, and also found its way to North America. In TMC, location referencing is based on pre-coding of locations. Disadvantages of this approach are the costs of creation, maintenance and dissemination of the tables that store the location codes and related information, and the limited number of locations that can be addressed. In addition, for navigation systems (that actually brought the success for TMC) the codes need to be incorporated as an edge attribute in the map database, which further increases creation and maintenance costs. In the second half of the last decade a first step for a so-called on-the-fly approach to location referencing for map-based systems (on both ends of the service chain) was developed and tested. On-the-fly means that a location reference (a code) is created, when needed, in the map database of the sending system, incorporated in a message, decoded by the receiving system using its local map database, and discarded. The map databases of the sending and receiving systems may be of different origin and specification, or different versions, but should be of comparable detail. A basic requirement is that the method should be robust against differences between the maps. On-the-fly location referencing is a key technology for many future applications in the fast developing world of telematics and multimedia, in the first place for traffic information services and traffic management applications (on both the data collection and distribution sides), but also for the emergency and other position dependent services that are a center of current attention. |
| 总页数： | Conference Title: 9th World Congress on Intelligent Transport Systems. Location: Chicago, Illinois. Sponsored by: ITS America, ITS Japan, ERTICO (Intelligent Transport Systems and Services-Europe). Held: 20021014-20021017. 2002. pp10 |
| 报告类型： | 科技报告 |
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