Communications – electrical: acoustic wave systems and devices – Distance or direction finding – By combining or comparing signals
Patent
1997-07-07
2000-03-21
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
By combining or comparing signals
364516, G01S 380, G01S 1500
Patent
active
060410191
ABSTRACT:
A method of data fusion determines a best-estimate solution to a moving cact using a plurality of trackers that provide bearing-to-contact data and range-to-contact data. An averaging function is applied to the bearing-to-contact data to determine weighted-average bearing data associated with each tracker. The same averaging function is also applied to the range-to-contact data to determine weighted-average range data. A computed solution to the moving contact is generated using the weighted-average range data and the weighted average bearing data from the one tracker having the lowest standard deviation. A root mean square (RMS) error in terms of bearing is then determined for the computed solution and each of a plurality of independently generated solutions using bearing-to-contact data from the one tracker having the lowest standard deviation. One of the computed solution or the independently generated solutions that produces the lowest RMS error is considered to be the best-estimate solution.
REFERENCES:
patent: 5107271 (1992-04-01), White
patent: 5355325 (1994-10-01), Uhlmann
patent: 5392225 (1995-02-01), Ward
patent: 5488589 (1996-01-01), DeAngelis
patent: 5537511 (1996-07-01), DeAngelis et al.
Frantz Francis J.
Greenbaum Hyman A.
Jackson Neil A.
Ryll Patrick B.
Williamson John T.
Gauthier Robert W.
Lall Prothvi C.
Lobo Ian J.
McGowan Michael J.
The United States of America as represented by the Secretary of
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