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1. WO2009014810 - SYSTEM AND METHOD FOR GPS SIGNAL ACQUISITION

Publication Number WO/2009/014810
Publication Date 29.01.2009
International Application No. PCT/US2008/065461
International Filing Date 01.06.2008
IPC
G01S 19/25 2010.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
19Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS , GLONASS or GALILEO
13Receivers
24Acquisition or tracking of signals transmitted by the system
25involving aiding data received from a cooperating element, e.g. assisted GPS
H04B 1/16 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
CPC
G01S 19/30
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
19Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
13Receivers
24Acquisition or tracking ; or demodulation; of signals transmitted by the system
30code related
Applicants
  • KANG, Inchul [US]/[US]
Inventors
  • KANG, Inchul
Agents
  • PERRY, Clifford
Priority Data
11/956,30713.12.2007US
60/941,65302.06.2007US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR GPS SIGNAL ACQUISITION
(FR) SYSTÈME ET PROCÉDÉ D'ACQUISITION DE SIGNAL GPS
Abstract
(EN)
A method for acquiring a GPS signal includes receiving a GPS signal portion over a coarse acquisition (C/A) frame period. The received GPS signal portion is stored and correlated to each of a plurality of versions of a reference coarse acquisition code to obtain a respective plurality of autocorrelation values. A peak value is selected among the autocorrelation values, the peak value corresponding to a version of the reference coarse acquisition code which is most aligned with the received GPS signal.
(FR)
La présente invention concerne un procédé d'acquisition d'un signal GPS, comprenant la réception d'une partie de signal GPS sur une période de trame d'acquisition grossière (C/A). La partie de signal GPS reçue est stockée et corrélée avec chaque version d'une pluralité de versions d'un code d'acquisition grossière de référence pour obtenir une valeur d'autocorrélation respective d'une pluralité de valeurs d'autocorrélation. Une valeur de crête est sélectionnée parmi les valeurs d'autocorrélation, la valeur de crête correspondant à une version du code d'acquisition grossière de référence qui est le plus aligné avec le signal GPS reçu.
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