Ordnance – Mounts – Training mechanisms
Reexamination Certificate
1999-05-21
2001-03-13
Eldred, J. Woodrow (Department: 3644)
Ordnance
Mounts
Training mechanisms
C089S001110, C342S062000, C342S067000, C702S152000, C244S003100
Reexamination Certificate
active
06199471
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates to a system and a method for determining a weapon firing strategy for an evading target, which system and method enable an operator to preset a single weapon against an evading target through the utilization of a man/machine interface which allows the operator to model target evasion schemes.
(2) Description of the Prior Art
Various systems have been used to analyze the motion of a target and to allow a weapon to be directed towards the target. U.S. Pat. No. 3,722,447, for example, illustrates an acoustic homing system for a torpedo. U.S. Pat. Nos. 3,883,070; 4,146,780; and 4,739,329 illustrate non-alerted
on-evading targets and weapon placement systems. None of these systems account for changes in target position as a result of target evasion.
U.S. Pat. Nos. 4,224,507; 4,796,187; 5,062,056; 5,267,329; 5,317,319; and 5,365,236 illustrate target selection and tracking systems, and are incorporated by reference herein. The target localization, tracking and classification information generated by these systems may be used in the system and method of the present invention.
Current systems preset the weapon on an intercept trajectory which assumes the target will not be alerted to the attack. The assumption is not realistic. There is minimal guidance given to combat control system operators for presetting weapons to be launched at evading targets. To increase weapon performance against an evading target, it has been suggested to fire two weapons on a lead/lag firing strategy based upon an intercept solution.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a more realistic method and system for determining the firing point for a weapon when a target or contact is alerted to the attack.
It is a further object of the present invention to provide a method and system as above which enables an operator to preset a single weapon against an evading target.
It is yet a further object of the present invention to provide a method and system as above which provides for an interactive mechanism for combining apriori knowledge of an evading target with subjective operator knowledge.
The foregoing objects are attained by the method and the system of the present invention.
In accordance with the present invention, a method for determining a weapon firing strategy for an evading target comprises the steps of sensing the motion of the target prior to alertment, analyzing the motion of the target prior to alertment, providing a weapon employment decision aid, determining an evasion region for the target using the weapon employment decision aid and the analyzed motion, visually displaying the evasion region, inputting operator knowledge about the evading target, and generating a representation of the probability of the location of the evading target. The weapon employment decision aid utilizes beta density functions to determine the evasion region, displays target course and speed in the form of bar graphs, and allows the operator to input information about target evasion course and speed and uncertainty levels.
A system for determining a weapon firing strategy for an evading target in accordance with the present invention comprises means for sensing motion of the target prior to alertment, means for analyzing the motion of the target prior to alertment, means for determining an evasion region for the target using the analyzed target motion, means for visually displaying the evasion region, means for inputting operator knowledge about the target, and means for generating a representation of the probability of the location of the evading target.
Other details of the method and system of the present invention, as well as other advantages and objects, are set forth in the following detailed description and the accompanying drawings.
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Hilliard, Jr. Edward J.
Perruzzi Joseph J.
Williamson John T.
Eldred J. Woodrow
Lall Prithvi C.
McGowan Michael J.
Oglo Michael F.
The United States of America as represented by the Secretary of
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