Patent ID: 8194501
Filing Date: 2012-06-05
Classification: G01S

Abstract:
1. A system for determining the trajectory of a supersonic projectile and firing position of said trajectory, said system comprising: an internal clock; a set of acoustic sensors positioned in a known locations and encountering pressure waves generated by said supersonic projectile passing proximate to said acoustic sensors, said acoustic sensors comprising a transducer collecting pressure wave information and generating pressure wave information signals in response to said pressure waves, the pressure wave information signals having a time series information signal calibrated to said internal clock; a first processor processing said time series information signal to provide parameter information for determining said trajectory of said supersonic projectile; said first processor comprising: wherein said localization estimation processor calculates an initial gamma estimate and calculates said estimated trajectory of said projectile and said estimated firing position of said projectile from said initial gamma estimate, wherein said localization estimation processor calculates from said estimated firing position of said projectile based on said initial gamma estimate, where and k is said acoustic sensor, S , is a three-dimensional position vector of the k th sensor S, {tilde over (Z)} is said initial estimate of said sniper position, and d is an estimated distance, and and N is the number of acoustic sensors, S is a three-dimensional position vector of the n th sensor S, {tilde over (Z)} is said initial estimate of said sniper position, d is an estimated distance, Ũ is an estimated trajectory of said projectile, and {hacek over (γ)}