一、近紅外隱身原理:
1、 Principle of near-infrared stealth:
白行研制了具有近紅外隱身性能的迷彩涂料,偽裝網(wǎng)表面均用該種涂料涂覆,使偽裝網(wǎng)的綠色斑點(diǎn)與自然綠色植物達(dá)到了同譜同色,可對(duì)抗可見光、近紅外、多光譜成像偵察,也可對(duì)抗微光夜視偵察。
Bai Xing has developed camouflage coatings with near-infrared stealth performance, and the surface of the camouflage net is coated with this coating, making the green spots of the camouflage net and natural green plants achieve the same spectrum and color, which can resist visible light, near-infrared, multispectral imaging reconnaissance, as well as low light night vision reconnaissance.
二、熱紅外隱身原理:
2、 Thermal infrared stealth principle:
①法向熱疏導(dǎo)
① Normal heat dissipation
與傳統(tǒng)偽裝網(wǎng)相比,該種偽裝網(wǎng)的通透率大大增加,有利于通風(fēng)降溫。偽裝網(wǎng)形成的通透孔自然形成了法向熱疏導(dǎo),而且偽裝網(wǎng)的針葉也是沿法向散開,使熱量迅速傳導(dǎo)到空氣中。這種形態(tài)形成了立體疏導(dǎo)效果,構(gòu)成了熱紅外隱身的主體。
Compared with traditional camouflage nets, this type of camouflage net has significantly increased transparency, which is beneficial for ventilation and cooling. The transparent holes formed by the camouflage net naturally form normal heat dissipation, and the needles of the camouflage net also spread out along the normal direction, allowing heat to be quickly conducted into the air. This form forms a three-dimensional guiding effect and constitutes the main body of thermal infrared stealth.
②熱屏蔽與熱斑點(diǎn)分割
② Thermal shielding and thermal spot segmentation
該種偽裝網(wǎng)內(nèi)部涂覆了熱反射層,將反射與屏蔽進(jìn)行了結(jié)合。同時(shí),不同的偽裝網(wǎng)顏色斑點(diǎn)在疏密程度、表面發(fā)射率、內(nèi)部反射率上進(jìn)行了等級(jí)設(shè)計(jì),使偽裝網(wǎng)表面形成熱斑點(diǎn)。
This type of camouflage net is coated with a heat reflection layer inside, which combines reflection and shielding. At the same time, different camouflage net color spots were graded in terms of density, surface emissivity, and internal reflectivity, resulting in the formation of thermal spots on the surface of the camouflage net.
三、雷達(dá)波隱身原理:
3、 Principle of radar wave stealth:
散射原理
Scattering principle
材料的針葉很密集,并且伸向各個(gè)方向,電磁波入射到針葉上,同時(shí)產(chǎn)生反射和透射,且多次反復(fù)。因此各個(gè)方向上都會(huì)有電磁波,這是散射原理。
The needles of the material are very dense and extend in all directions. Electromagnetic waves are incident on the needles, causing both reflection and transmission, and repeated multiple times. Therefore, there will be electromagnetic waves in all directions, which is the principle of scattering.
②導(dǎo)線電流耗散原理
② Principle of wire current dissipation
針葉形多頻譜隱身網(wǎng)的針葉是一種電阻型纖維,它是導(dǎo)體,是很多很多導(dǎo)線天線,導(dǎo)線上又有恰當(dāng)大小的電阻。當(dāng)電磁波入射時(shí),會(huì)在導(dǎo)電纖維上產(chǎn)生感應(yīng)電流。由于纖維有電阻,使感應(yīng)電流在流動(dòng)和二次發(fā)射時(shí)消耗能量。這是導(dǎo)線電流耗散原理。
The needles of the needle shaped multispectral stealth network are a type of resistive fiber, which is a conductor and serves as an antenna for many wires, with appropriate resistance on the wires. When electromagnetic waves are incident, induced currents are generated on conductive fibers. Due to the resistance of fibers, induced currents consume energy during flow and secondary emission. This is the principle of wire current dissipation.
③諧振吸收原理
③ Resonance absorption principle
根據(jù)應(yīng)用的條件或要求,改變針葉的長(zhǎng)度可調(diào)節(jié)低頻電性能。如欲使低頻性能好,纖維長(zhǎng)度要長(zhǎng)一些。當(dāng)導(dǎo)線纖維的長(zhǎng)度正好是波長(zhǎng)的四分之一的倍數(shù)時(shí),導(dǎo)線將產(chǎn)生諧振作用。由于導(dǎo)線有電阻,因而耗散能量會(huì)更多,這是諧振吸收原理。
According to the application conditions or requirements, changing the length of the needle can adjust the low-frequency electrical performance. To achieve good low-frequency performance, the fiber length needs to be longer. When the length of the wire fiber is exactly a multiple of a quarter of the wavelength, the wire will produce resonance. Due to the resistance of wires, more energy is dissipated, which is the principle of resonant absorption.
4相位抵消原理
Principle of 4-phase cancellation
在任何一個(gè)電磁波入射方向上,針葉排列有前有后,有左有右,電磁波的反射又是多方向的。因而任何一ki接收到的電磁波是來自多個(gè)反射點(diǎn),是很多很多個(gè)反射信號(hào)的疊加,每個(gè)反射信號(hào)的相位各不相同,囚而會(huì)產(chǎn)生相位抵消作用。
In any direction of electromagnetic wave incidence, needle needles are arranged in front and back, left and right, and the reflection of electromagnetic waves is multi-directional. Therefore, any electromagnetic wave received by ki comes from multiple reflection points, which are the superposition of many, many reflection signals. The phase of each reflection signal is different, resulting in phase cancellation.
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