Method for determining a position of an electronic device...

Details Method for determining a position of an electronic device... Method for determining a position of an electronic device...

2005-04-19

2005-04-19

Phan, Dao (Department: 3662)

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

Directive

Including a satellite

C342S357490, C342S357490

Reexamination Certificate

active

06882306

ABSTRACT:
The present invention relates to a method for determining the position of an electronic device using satellites in a positioning system. In the method, satellite orbit data and a default position for the electronic device are determined. In the method, at least the following steps are taken: a determination step for determining a first time data estimate by using the default position, a computing step for computing an estimate of the code phase of the satellite signal on the basis of the time data estimate, the default position and the satellite orbit data, and a searching step, in which a code-modulated signal transmitted by satellites of a positioning system is received for searching the signal of at least one satellite and for acquiring the signal by using the estimate of the code phase. The invention also relates to a system, in which the method is applied, as well as to an electronic device.

REFERENCES:
patent: 6075987 (2000-06-01), Camp et al.
patent: 6204808 (2001-03-01), Bloebaum et al.
patent: 6380891 (2002-04-01), Yamashita
patent: 6784834 (2004-08-01), Sirola et al.
patent: 108895 (2002-04-01), None
patent: 0036431 (2000-06-01), None
“An Expanding-Search Algorithm for Coarse Acquisition of DSS Signals” by John S. Seybold et al, Military Communications Conference, 1996. Milcom ′96. Conference Proceedings, IEEE McLean, VA. Oct. 21-24, 1996, New York, NY pp. 993-997.

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