Genetic algorithm enhancement of radar system survivability
a gene algorithm and radar system technology, applied in the field of radar survival improvement, can solve the problems of complex stochastic computation, millions of computational runs to analyze all valid combinations, and complex problems, and achieve the effect of enhancing radar system survivability and radar system survivability against a threa
Inactive Publication Date: 2012-06-21
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Benefits of technology
"The patent describes a process for improving the ability of a radar system to survive a threat. This is done by creating multiple versions of the radar system that have different values for geometry and operational parameters. These versions are then tested using a genetic algorithm analysis, which determines which version is most fit to survive the threat. By using this analysis, the radar system can be designed to be more resistant to damage from the threat. This process can be applied to both real and virtual radar systems."
Problems solved by technology
A problem with defending an air and missile radar defense system against a potential threat is the complexity of the problem.
To model a radar defense system and its perceived performance against an ARM threat involves approximately 200 interdependent variables resulting in a stochastic computation that is so complex that to analyze all the valid combinations involves millions of computational runs.
As a result, even with high speed computational resources, radar system operational optimization in the face of an evolving threat is currently so slow as to effectively be intractable.
However, these past efforts have not addressed issues related to improving radar defense system survivability against ARMs.
However, the geometric configuration of a decoy or group of decoys in a radar system is complex.
Likewise, the operational conditions of a radar and the related decoys to blunt a given ARM threat is a complex problem that may evolve in real time based on the threat scenario.
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[0012]The present invention has utility in providing a process for enhancing radar systems against an anti-radiation missile (ARM) threat. A novel genetic algorithm is used with a simulation of survivability for a given chromosome, to obtain configurational and operational parameters with enhanced survivability. Previous approaches have used decoys that mimic radar, where survivability of the radar then depended on the location and mimicked behavior of each decoy. However, the complexity of these systems is so large that a full analysis of the problem has previously been intractable.
[0013]An inventive hybrid genetic algorithm is provided that allows optimization of the operational states, locations, and number of radars and decoys used to enhance survivability of a radar station to an evolving threat.
[0014]In a representative example, a novel hybrid genetic algorithm is designed to allow optimization of the survivability of at least one radar station emitter and at least one decoy a...
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A process for enhancing radar system survivability against a threat includes the construction of multiple computational radar function chromosomes with each of the chromosomes having values for geometric configuration and operational parameters for at least one radar station emitter and at least one decoy. A genetic algorithm analysis is performed on a computer including a crossover operator and a mutation operator to determine a fitness value for multiple chromosomes against the threat. By configuring and operating the radar system based on a survivability value for the fitness value of the genetic algorithm analysis, radar system survivability against a threat is enhanced. A radar system employing genetic algorithm analysis is also provided.
Description
GOVERNMENT INTEREST[0001]The invention described herein may be manufactured, used, sold, imported or licensed by or for the United States Government.FIELD OF THE INVENTION[0002]The present invention relates to improving radar survival against a threat, and in particular to the use of a genetic algorithm to rapidly converge on radar configurations and operational parameters to improve survivability.BACKGROUND OF THE INVENTION[0003]Air and missile defense radar systems provide early warning as to both battlefield and theater threats. A well designed air and missile defense radar system provides sufficient advance warning for ground personnel to take evasive actions, interceptor aircraft or missile assets can be vectored towards the threat, or electronic jamming devices employed. Owing to the effectiveness of air and missile defense radar systems against an aggressor, conventional air attack doctrine includes an anti-radiation missile (ARM) attack component to blind a defender as to an...
Claims
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IPC IPC(8): G01S7/42
CPCG01S13/87G01S7/36
InventorDJANG, PHILIPP ARTHURLOPEZ, FRANKHERRIMAN, GENE E.RUILOBA, JR., EDUARDOFRIDAY, EDWARD
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