H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 4/02 (2009.01) H04W 88/06 (2009.01) G01S 19/24 (2010.01) G01S 19/31 (2010.01) H04B 7/185 (2006.01) G01S 19/13 (2010.01)
Patent
CA 2512271
A mobile terminal is configured to receive wireless communications including GPS data from a terrestrial and/or satellite wireless network, and to perform pseudo-range measurements using the GPS data that is received. The mobile terminal may be configured to perform pseudo-range measurements by receiving GPS coarse/acquisition (C/A) signals from GPS satellites, estimating Doppler shifts in the received GPS C/A signals, and estimating received code phases of the GPS C/A signals using the Doppler shifts that are estimated. The estimated code phases and/or the estimated Doppler shifts of the GPS C/A signals can provide the pseudo-range measurements. By removing the Doppler shift from the received signal samples prior to performing the code phase measurement, reduced computational complexity and/or processing time may be obtained.
L'invention concerne un terminal mobile configuré pour recevoir des communications sans fil, y compris des données GPS, provenant d'un réseau terrestre et/ou sans fil par satellite, et pour effectuer des mesures de pseudodistance à l'aide des données GPS reçues. Ce terminal mobile peut être configuré pour effectuer des mesures de pseudodistance sur la base de signaux C/A (acquisition grossière) GPS provenant des satellites GPS, pour estimer des décalages Doppler dans les signaux C/A GPS reçus et pour estimer les phases de codes reçues des signaux C/A GPS à partir des décalages Doppler estimés. Les phases de codes estimées et/ou les décalages Doppler estimés des signaux C/A GPS peuvent fournir les mesures pseudodistance. Le fait de retirer le décalage Doppler des échantillons de signaux reçus avant que les phases de codes ne soient mesurées permet de réduire la complexité des calculs et/ou le temps de traitement.
Atc Technologies Llc
Mobile Satellite Ventures Lp
Sim & Mcburney
LandOfFree
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