| 摘要 |
A geographic based location system, comprising a plurality of wireless communication devices, wherein each wireless communication device is arranged for obtaining geographic data and non-geographic data, and for communicating said geographic data and non-geographic data in frames over a wireless communication network, a storage database server arranged for receiving said geographic data and non-geographic data over said wireless communication network, and for storing said geographic and non-geographic data in a storage database, a presentation database server arranged for compressing said geographic and non- geographic data in said storage database to a presentation database, wherein said compressing of said geographic and said non-geographic data comprises compressing said geographic and said non- geographic data into segments of variable length, wherein a start of a segment is triggered by a change in said non-geographic data, and wherein data in said segments are stored incremental, a web-based user portal arranged for receiving a query out of a predefined list of available queries from a user, performing said query on said presentation database and for displaying results of said query to said user. |
