Method and apparatus for determining whether two radar tracks re

Details Method and apparatus for determining whether two radar tracks re Method and apparatus for determining whether two radar tracks re

1998-08-18

1999-12-14

Gregory, Bernarr E.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Digital processing

342 36, 342 59, 342 89, 342189, 342 94, 342 95, 235400, 235411, G01S 1366

Patent

active

060023589

ABSTRACT:
An apparatus and computer-implemented method of determining a probability that a first track and a second track represent the same physical object. The apparatus and method fit a first order curve for a last n positions of the first track and the second track in a time domain; fit a second order curve for a last m (m>n) positions of the first track and the second track in the time domain; generate a maximum and minimum second order envelope for the first track and the second track, using a respective maximum acceleration of the first track and the second track; orthogonally place a probability curve over each of the first order curves for the first and second track, with each first order curve at a center of each probability curve for N sigmas extending to boundaries of each of the maximum and minimum second order envelopes; extract a first probability value from a point where the second order curve of the first track intersects the probability curve for the first track and a second probability value from a point where the second order curve of the second track intersects the probability curve for the first track; and determine the probability that the first track and the second track represent the same physical object from the first probability value and the second probability value.

REFERENCES:
patent: 3277473 (1966-10-01), Calhoon, Sr. et al.
patent: 3399404 (1968-08-01), Githens et al.
patent: 4845500 (1989-07-01), Cornett et al.
patent: 5202691 (1993-04-01), Hicks
patent: 5414643 (1995-05-01), Blackman et al.

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