Position estimation

Details Position estimation Position estimation

2005-05-17

2005-05-17

Tarcza, Thomas H. (Department: 3662)

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

Directive

Position indicating

C342S357490, C342S357490, C342S357490, C342S386000, C342S463000

Reexamination Certificate

active

06894645

ABSTRACT:
The invention relates to a method for estimating the position of a receiver receiving code modulated signals from at least one beacon. The method comprises delimiting a region containing the receiver position based on a code modulated signal received at the receiver from at least one beacon and on available information including at least an initial information on the receiver position. The method further comprises estimating the receiver position as a position within the delimited region which minimizes an error criterion. The invention relates equally to such a receiver, to a system comprising such a receiver and to a corresponding software program product enabling an estimation of the position of a receiver.

REFERENCES:
patent: 6243648 (2001-06-01), Kilfeather et al.
patent: 6728545 (2004-04-01), Belcea
patent: 20020072853 (2002-06-01), Sullivan
Web pages: www.colorado.edu/georgraphy/gcraft
otes/gps/gps.html, “Global Positioning System Overview,” by Peter H. Dana, 1994, copyright 1999, 12 pp.
“Computation of the Discrete Fourier Transform,” Chapter 9, pp. 581-622.

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