Method for the accelerated acquisition of satellite signals

Details Method for the accelerated acquisition of satellite signals Method for the accelerated acquisition of satellite signals

2008-07-22

2008-07-22

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357490

Reexamination Certificate

active

07403155

ABSTRACT:
The present invention proposes to use optimally a location method based on a WIFI type short-range telecommunication system and a satellite location system. The short-range telecommunication system is used to locate the terminal accurately within the building in which it is situated. The method uses a cartographic representation of the buildings in order to deduce from the position of the terminal a set of satellites that could be received by the terminal. The satellites are then acquired to synchronize the terminal to the satellite system. That synchronization is then used when the terminal leaves the building to acquire as quickly as possible the set of satellites of the satellite navigation constellation.

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patent: 6313786 (2001-11-01), Sheynblat
patent: 2003/0083816 (2003-05-01), Imakado
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patent: 2006/0181453 (2006-08-01), King et al.
patent: 2006/0238418 (2006-10-01), Monnerat et al.

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