초록 ▼

A method for determining the trajectory of a projectile on a ballistic trajectory includes creating a sequence of images of the projectile using a passive image sensor located at an observer; determining the time the projectile started on its trajectory; determining relative positions of the project

A method for determining the trajectory of a projectile on a ballistic trajectory includes creating a sequence of images of the projectile using a passive image sensor located at an observer; determining the time the projectile started on its trajectory; determining relative positions of the projectile's launch point, the observer, and an expected impact point; ballistically modelling the projectile; and tracking the projectile through the sequence of images using a track before detect algorithm.

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining the trajectory of a projectile on a ballistic trajectory, comprising:capturing a timed sequence of image frames of the projectile in flight, each image frame comprised of pixels;comparing the grey-scale intensity of pixels at corresponding positio

[ What is claimed is:] [1.] A method for determining the trajectory of a projectile on a ballistic trajectory, comprising:capturing a timed sequence of image frames of the projectile in flight, each image frame comprised of pixels;comparing the grey-scale intensity of pixels at corresponding positions of each image frame of the sequence to arrive at a composite representing maximum intensity pixels;determining the times at which each such maximum intensity pixel was captured;calculating at least one array of test pixels corresponding to at least one estimated trajectory of the projectile;comparing the at least one array of test pixels to the times of the maximum intensity pixels to determine pixel matches;using the pixel matches to arrive at a score for each such estimated trajectory;selecting a best-fit estimated trajectory based on the score for such estimated trajectory.