Ultrafast laser IR countermeasures

Rafailov, Michael K.

doi:10.1117/12.816557

Cited by 2 publications

(2 citation statements)

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“…Due to easy investigation and cost reduction in principle establishment and performance evaluation for functionality of an IR system, the demand for IR simulators is quickly increasing for military purpose research. Recent military IR simulators such as IR countermeasures (IRCM), directed IRCM (DIRCM), and IR reticle seeker are broadly used for evaluation, efficiency, and modification for actual military IR sensor systems [1][2][3][4][5][6][7][8]. The basic materials for analyzing arbitrary IR system are IR target and background images which are transformed as IR signatures with an intensity (gray-level) distribution corresponding to the temperature range of the IR target and background scene.…”

Section: Introductionmentioning

confidence: 99%

IR Composite Image Generation by Wavelength Band Based on Temperature Synthesis Estimated from IR Target Signature and Background Scene

Bae

Kim²,

Ahn

2019

Journal of Sensors

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Infrared (IR) target signatures and background scenes are mainly used for military research purposes such as reconnaissance and detection of enemy targets in modern IR imaging systems like IR search and track (IRST) system. For understanding and analyzing IR signatures and backgrounds in the IR imaging systems, an IR wavelength band (WB) conversion which transforms an arbitrary WB image to another WB is very important in the absence of equipment by WB. In addition, IR image synthesis of targets and backgrounds can provide a great deal of information in the IR target detection field. However, the WB conversion is actually a very challenging research due to lack of information on the absorptivity and transmittance of enormous components of an object or atmosphere. In addition, the radiation and reflectance characteristics of short-wave IR (SWIR)-WB are very different from those of long-wave IR (LWIR)-WB and middle-wave IR (MWIR)-WB. Therefore, the WB conversion in this paper is limited only to IR target signatures and monotonous backgrounds, which is commonly used for military purposes, at a long distance. This paper proposes an IR synthesis method for generating a synthesized IR image of three IR-WBs by synthesizing an IR target signature and a real background scene for an arbitrary IR-WB. In the proposed method, each temperature information is first estimated from an IR target signature and IR background image for an arbitrary IR-WB, and then a synthesized temperature image is generated by combining the respective temperature information estimated from the IR target signature and background scene. Finally, the synthesized temperature image is transformed into an IR radiance image of three IR-WBs. Through the proposed method, various IR synthesis experiments are performed for various IR target signature and background scenes.

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Section: Introductionmentioning

confidence: 99%

IR Composite Image Generation by Wavelength Band Based on Temperature Synthesis Estimated from IR Target Signature and Background Scene

Bae

Kim²,

Ahn

2019

Journal of Sensors

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“…It may be difficult to achieve sufficiently high powers for physical damage in countermeasure scenarios, in which attenuation processes (via scattering and absorption of the atmosphere) can prevent obtaining the desired result. However, interaction between femtosecond laser pulses and photonic detectors can also be useful for countermeasure applications at lower powers than those required for damaging, via so-called bleaching of the detector material [22,23].…”

Section: Femtosecond Laser Jamming Of Detectorsmentioning

confidence: 99%

Femtosecond lasers for countermeasure applications

Franssen

Schleijpen

Heuvel

et al. 2009

Technologies for Optical Countermeasures VI

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In recent years, much advance in the field of high-power femtosecond laser technology has been made. The high pulse power of femtosecond laser systems leads to various interesting phenomena, such as a very high power density and the formation of a plasma in the propagation medium, which is usually air. The possible application of femtosecond lasers for infrared countermeasure (CM) applications, other than direct illumination of the detector, was suggested by several authors. The goal of these countermeasures is to divert missiles from their interception course. We quantitatively examined several suggested CM applications of femtosecond lasers from the literature. Our analyses show that application of femtosecond laser beams for dazzling of missile seeker heads is not in any way promising, neither via white-light generation in the ultra-short laser pulses nor via glowing plasma. In both these cases the generated light intensity is too low to successfully compete with the signal of a typical target. Taking into account literature reports, we conclude that the most promising application of femtosecond laser beams in the field of countermeasure applications seems to be related to inducing damage of the optical components of the seeker system.

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Ultrafast laser IR countermeasures

Cited by 2 publications

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IR Composite Image Generation by Wavelength Band Based on Temperature Synthesis Estimated from IR Target Signature and Background Scene

IR Composite Image Generation by Wavelength Band Based on Temperature Synthesis Estimated from IR Target Signature and Background Scene

Femtosecond lasers for countermeasure applications

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