US Patent No. 9,115,996

THREAT ANALYSIS TOOLKIT


Patent No. 9,115,996
Issue Date August 25, 2015
Title Threat Analysis Toolkit
Inventorship Uday N. Desai, Fort Worth, TX (US)
John M. Williams, Weatherford, TX (US)
Russell G. Torti, Southlake, TX (US)
Assignee Lockheed Martin Corporation, Bethesda, MD (US)

Claim of US Patent No. 9,115,996

1. A method of managing a flight path of an aircraft subject to a threat, the method comprising the steps of:
a. receiving threat data;
b. receiving flight path data including a location of each of a plurality of preselected mission waypoints;
c. computing a simulated waypoint along the flight path, the simulated waypoint located between two of the plurality of preselected
mission waypoints;

d. computing line of sight LOS vectors from the location of the simulated waypoint to locations of threats, each of the LOS
vector having an azimuth parameter, an elevation parameter, and a range parameter;

e. determining a probability of threat detection by the threat using the computed LOS Vector;
f. creating a volumetric perturbation by, perturbing the parameters of Azimuth, elevation, and range to generate a plurality
of perturbed LOS vectors each having one or more or all of its respective parameters of azimuth, elevation, and range having
perturbed values;

g. altering the flight path based on the volumetric perturbation;
h. assigning a threat value from among each probability of threat detection by the threat determined using the computed LOS
vector and each of the plurality of perturbed LOS vectors;

i. determining if the maximum probability of threat detection value of the threat exceeds an acceptable probability of detection
value of the threat; and

j. if the maximum probability of threat detection value of the threat exceeds the acceptable probability of threat detection
value, performing the step of generating, a list of a plurality of candidate waypoints.