Reference beacon methods and apparatus for TDOA/FDOA...

Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating

Reexamination Certificate

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Reexamination Certificate

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08044859

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: 6330452 (2001-12-01), Fattouche et al.
patent: 6522296 (2003-02-01), Holt
patent: 7030812 (2006-04-01), Bekritsky et al.
patent: 7090812 (2006-08-01), Joyce et al.
patent: 7570212 (2009-08-01), Lommen 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
patent: 2007/0216540 (2007-09-01), Riley et al.
Don R. Van Rheeden et al., “Automatic Positioning of UAVs to Optimize TDOA Geolocation Performance,” IEEE 2004.
Paul C. Chestnut, “Emitter Location Accuracy Using TDOA and Differental Doppler,” IEEE Trans. on Aerospace and Electronic Systems, vol AES-18, No. 2, Mar. 1982.
William W. Smith, Jr. et al., “Time Delay Techniques for Satellite Interference Location System,” IEEE Trans. on Aerospace and Electronic Systems, vol. AES-25, No. 2, Mar. 1989.
William W. Smith, Jr. et al., “A Satellite Interference Location System Using Differential Time and Phase Measurement Techniques,” IEEE AES Systems Magazine, Mar. 1991.
Alexander Sonnenschein et al., “Geolocation of Frequency-Hopping Transmitters via Satellite,” IEEE Trans. on Aerospace and Electronic Systems, vol. AES-29, No. 4, Oct. 1993.
K.C. Ho et al., “Solution and Performance Analysis of Geolocation by TDOA,” IEEE Trans. on Aerospace and Electronic Systems, vol. AES-29, No. 4, Oct. 1993.

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