Ballistic projectile trajectory determining system

Details Ballistic projectile trajectory determining system Ballistic projectile trajectory determining system

1996-02-05

1997-05-20

Pihulic, Daniel T.

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

Determining velocity

Combined with determining distance and direction

342 90, 250342, G01S 1358

Patent

active

056316542

ABSTRACT:
A computer controlled system determines the three-dimensional trajectory of a ballistic projectile. To initialize the system, predictions of state parameters for a ballistic projectile are received at an estimator. The estimator uses the predictions of the state parameters to estimate first trajectory characteristics of the ballistic projectile. A single stationary monocular sensor then observes the actual first trajectory characteristics of the ballistic projectile. A comparator generates an error value related to the predicted state parameters by comparing the estimated first trajectory characteristics of the ballistic projectile with the observed first trajectory characteristics of the ballistic projectile. If the error value is equal to or greater than a selected limit, the predictions of the state parameters are adjusted. New estimates for the trajectory characteristics of the ballistic projectile are made and are then compared with actual observed trajectory characteristics. This process is repeated until the error value is less than the selected limit. Once the error value is less than the selected limit, a calculator calculates trajectory characteristics such a the origin and destination of the ballistic projectile.

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patent: 5300780 (1994-04-01), Denney et al.
patent: 5537119 (1996-07-01), Poore, Jr.
patent: 5570094 (1996-10-01), Armstrong

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