Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1998-03-17
2000-11-07
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
701209, 701210, G01S 502
Patent
active
061443387
ABSTRACT:
A method and system are disclosed for providing a more accurate position of a mobile receiver even though a signal received by the mobile receiver indicating the position of the mobile receiver is inaccurate. The received signal is used as an estimated indication of the position of the mobile receiver. A database comprises geometrical objects representing navigable routes. The geometrical objects include a geometry attribute defining the geometry of a complete representation of the navigable route. A geometrical object representing a navigable route is determined where the mobile receiver is probably located. The estimated position of the mobile receiver can then be compared against the geometry of the navigable route and against the previous positions in which the mobile receiver was located. The estimated position of the mobile receiver can be adjusted if necessary to provide a more probable position of the mobile receiver.
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Blum Theodore M.
PRC Public Sector. Inc.
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