Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1994-03-10
1996-07-09
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
342463, 342465, 34082549, G01S 124
Patent
active
055348769
ABSTRACT:
A multilateration location system (12) includes a locatable unit (16) and any number of known-position locators (14). A time of arrival detector (22) determines instants in time when a location signal (20) transmitted by the locatable unit (16) arrives at various known-position locators (14). For each combination of two known-position locators (14) that receive the location signal (20), a pre-estimation process (32) determines whether the difference in arrival times is less than or equal to a maximum propagation duration for the locator pair. The maximum propagation duration is based upon the distance between the locators (14) in the locator pair. If the difference is greater than the maximum propagation duration, the difference is omitted from the data set processed by a multilateration calculation process (34). A post estimation filtering process (36) screens out location estimates that are too distant from a predicted position.
REFERENCES:
patent: 3150372 (1964-09-01), Groth, Jr.
patent: 3307192 (1967-02-01), Attwood
patent: 3848254 (1974-11-01), Drebinger et al.
patent: 3886554 (1975-05-01), Braur et al.
patent: 4229737 (1980-10-01), Heldwein et al.
patent: 4975707 (1990-12-01), Smith
patent: 5051741 (1991-09-01), Wesby
patent: 5115104 (1992-06-01), Heller
patent: 5365516 (1994-11-01), Jandrell
An article entitled "Accuracy Limitations of Hyperbolic Multilateration Systems" by H. B. Lee, IEEE Transactions Aerospace and Electronic Ssytems, vol. AES-11, No. 1, Jan. 1975, pp. 16-29.
An article entitled "A Novel Procedure for Assessing the Accuracy of Hyperbolic Multilateration Systems": by H. B. Lee, IEEE Transactions Aerospace and Electronic Systems, vol. AES-11, No. 1, Jan. 1975, pp. 2-15.
An article entitled "Implementation of Geostar.RTM.RDSS Spread Spectrum Receiver" by M. Motamedi et al., IEEE/IEICE Global Telecommunications Conference 1987, Nov. 15-18, 1987, pp. 1675-1678.
An article entitled "Statistical Theory of Passive Location Systems" by D. J. Torrieri, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-20, No. 2, Mar. 1984, pp. 183-198.
Anderson Neal R.
Erickson Bart J.
Botsch Sr. Bradley J.
Motorola Inc.
Nehr Jeffrey D.
Phan Dao L.
Tarcza Thomas H.
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