(19)
(11) EP 2 020 607 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
17.06.2009 Bulletin 2009/25

(43) Date of publication:
04.02.2009 Bulletin 2009/06

(21) Application number: 08018093.8

(22) Date of filing: 21.06.2002
(51) International Patent Classification (IPC): 
G01S 1/00(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 22.06.2001 US 888229

(62) Application number of the earlier application in accordance with Art. 76 EPC:
02744558.4 / 1399758

(71) Applicant: SiRF Technology, Inc.
San Jose, CA 95112 (US)

(72) Inventors:
  • Sahai, Anant
    Berkeley, CA 95705 (US)
  • Chou, Andrew
    San Mateo, CA 94402 (US)
  • Mann, Wallace
    Mill Valley, CA 94941 (US)
  • Casadei, Stefano
    San Francisco, CA 94123 (US)

(74) Representative: Kramer - Barske - Schmidtchen 
European Patent Attorneys Landsberger Strasse 300
80687 München
80687 München (DE)

 
Remarks:
This application was filed on 15-10-2008 as a divisional application to the application mentioned under INID code 62.
 


(54) Determining the spatio-temporal and kinematic parameters of a signal receiver and its clock by information fusion


(57) Techniques are provided for determining clock doppler of a signal receiver. One aspect of the invention is to divide sampled data received from a receiver into data segments of incremental length. The clock doppler is estimated based on each data segment with respect to all the satellites from a set of satellites that is overhead the receiver. For each data segment, the results with respect to each satellite is used to refine the calculations of the clock doppler with respect to the next satellite. When the clock doppler calculations have been performed using all the satellites from the set of satellites for a particular data segment, then the results with respect to the particular data segment is used to refine the calculations of the clock doppler with respect to the next data segment.