Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate
2006-04-07
2009-08-04
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
Reexamination Certificate
active
07570212
ABSTRACT:
A method and apparatus for estimating bias errors in a time-difference-of-arrival/frequency-difference-of-arrival (TDOA/FDOA) geolocation system using a reference signal transmitter in which position and/or motion information of the reference signal transmitter is encoded into the reference signal. The motion information may include the velocity and/or acceleration of the reference signal transmitter. The reference signal is received by multiple collection platforms operating in conjunction with a geolocation system and a reference correction processing system. The reference correction processing system receives, via the multiple collection platforms, the position and/or motion information, which is immediately and unambiguously associated with specific reference signal transmissions. The geolocation system estimates the position and/or velocity of the reference signal transmitter using conventional TDOA/FDOA techniques. The estimated position and/or velocity of the reference signal transmitter is compared to the information contained in the reference signal to estimate bias errors.
REFERENCES:
patent: 4740792 (1988-04-01), Sagey et al.
patent: 5008679 (1991-04-01), Effland et al.
patent: 5327144 (1994-07-01), Stilp et al.
patent: 5608410 (1997-03-01), Stilp et al.
patent: 5999116 (1999-12-01), Evers
patent: 6211811 (2001-04-01), Evers
patent: 6230018 (2001-05-01), Watters et al.
patent: 7030812 (2006-04-01), Bekritsky et al.
patent: 2002/0196186 (2002-12-01), Holt
patent: 2003/0017832 (2003-01-01), Anderson et al.
patent: 2003/0052821 (2003-03-01), Holt
Don R Van Rheeden, et al,“Automatic Positioning Of UAVS to Optimize TSOA Geolocation Performance”, IEEE 2004.
Edewaard David O.
Halladay Henry E.
Lommen Layne D.
Brosemer, Kolefas & Assoc. LLC
Nguyen Nga X
Tarcza Thomas H
The Boeing Company
LandOfFree
Reference beacon methods and apparatus for TDOA/FDOA... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reference beacon methods and apparatus for TDOA/FDOA..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reference beacon methods and apparatus for TDOA/FDOA... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4065081