EP 1782550 A2 20070509 - METHOD AND SYSTEM FOR COMPENSATING SATELLITE SIGNALS
Title (en)
METHOD AND SYSTEM FOR COMPENSATING SATELLITE SIGNALS
Title (de)
VERFAHREN UND SYSTEM ZUR SATELLITENSIGNALKOMPENSATION
Title (fr)
PROCEDE ET SYSTEME DE CORRECTION DE SIGNAUX TRANSMIS PAR SATELLITE
Publication
Application
Priority
- US 0329608 W 20030924
- US 41325102 P 20020924
- US 41321102 P 20020924
- US 41325202 P 20020924
- US 41308002 P 20020924
- US 66762803 A 20030922
- US 66801103 A 20030922
- US 66785403 A 20030922
- US 66783003 A 20030922
Abstract (en)
[origin: WO2004029646A2] A system is provided for detecting a low-power error condition in a local area augmentation system (LAAS). The system receives a radio signal from a global positioning system (GPS) satellite and measures the wide band and narrow band power of the radio signal in real time. The system estimates the signal-to-noise ratio of the signal in real time based on average wide band and narrow band power measurements. A low signal-to-noise ratio indicates a lower power condition. The system then calculates an error contribution due to the low power condition and sums the error contribution with other error contributions to determine the total error in a navigational measurement. To ensure error overbounding, the system may subtract a confidence offset from the signal-to-noise ratio to obtain a lower confidence limit.
IPC 8 full level
H04B 7/00 (2006.01); G01S 1/00 (2006.01); G01S 19/07 (2010.01); G01S 19/08 (2010.01); G01S 19/20 (2010.01); G01S 19/21 (2010.01); H04B 7/08 (2006.01); G01S 19/29 (2010.01)
CPC (source: EP US)
G01S 19/071 (2019.07 - EP US); G01S 19/08 (2013.01 - EP); G01S 19/20 (2013.01 - EP); G01S 19/21 (2013.01 - EP); H04B 7/084 (2013.01 - EP); G01S 19/29 (2013.01 - EP); Y02D 30/70 (2020.08 - EP)
Citation (search report)
See references of WO 2004030237A2
Designated contracting state (EPC)
FR
DOCDB simple family (publication)
WO 2004029646 A2 20040408; WO 2004029646 A3 20040715; AU 2003272597 A1 20040419; AU 2003272597 A8 20040419; AU 2003273352 A1 20040423; AU 2003273353 A1 20040423; AU 2003278884 A1 20040419; AU 2003278884 A8 20040419; EP 1782550 A2 20070509; WO 2004030237 A2 20040408; WO 2004030237 A3 20040610; WO 2004031797 A1 20040415; WO 2004031799 A1 20040415
DOCDB simple family (application)
US 0330050 W 20030924; AU 2003272597 A 20030924; AU 2003273352 A 20030924; AU 2003273353 A 20030924; AU 2003278884 A 20030924; EP 03754786 A 20030924; US 0329608 W 20030924; US 0329955 W 20030924; US 0329956 W 20030924