Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2011-04-12
2011-04-12
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357490
Reexamination Certificate
active
07924219
ABSTRACT:
A positioning method includes: determining a receiving environment of a satellite signal from a positioning satellite; predicting a state vector including a position of a positioning device and a velocity of the positioning device based on the satellite signal; predicting a first distance-equivalent value indicating a distance between the positioning satellite and the positioning device; measuring a second distance-equivalent value indicating a distance between the positioning satellite and the positioning device; calculating an observed value indicating a difference between the first distance-equivalent value and the second distance-equivalent value; setting a first measurement error for the positioning satellite based on a signal strength of the satellite signal; setting a suitability condition of the observed value based on the receiving environment; setting a second measurement error larger than the first measurement error when the observed value is not suitable by the suitability condition; and correcting the state vector using the observed value and the second measurement error.
REFERENCES:
patent: 5757316 (1998-05-01), Buchler
patent: 5760737 (1998-06-01), Brenner
patent: 5929805 (1999-07-01), Tadros et al.
patent: 6609080 (2003-08-01), Syrjarinne
patent: 6732050 (2004-05-01), Syrjarinne
patent: 6876925 (2005-04-01), Syrjarinne
patent: 7012563 (2006-03-01), Bustamante et al.
patent: 7414573 (2008-08-01), Murphy
patent: 7415354 (2008-08-01), Alexander
patent: 7439908 (2008-10-01), Zhodzishsky et al.
patent: 7692578 (2010-04-01), Vollath et al.
patent: 7755542 (2010-07-01), Chen et al.
patent: 7777673 (2010-08-01), Mizuochi et al.
patent: 7797105 (2010-09-01), Alexander
patent: 2002/0177951 (2002-11-01), Syrjarinne
patent: 2004/0138813 (2004-07-01), Syrjarinne
patent: 2005/0058337 (2005-03-01), Fujimura et al.
patent: 2009/0141779 (2009-06-01), Murakami
patent: 2001-337156 (2001-12-01), None
Greg Welch and Gary Bishop, “An Introduction to the Kalman Filter”, Jul. 24, 2006, Department of Computer Science, University of North Carolina.
Butsch, Felix “Radiofrequency interference and GPS: A growing concern”, Oct. 2002, GPS World.
Global IP Counselors, LLP
McGue Frank
Seiko Epson Corporation
Tarcza Thomas H
LandOfFree
Positioning method, program, positioning device, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positioning method, program, positioning device, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positioning method, program, positioning device, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2674097