夜间装备运输中对光学侦拍装置的探测干扰实验

吴冠霖; 刘璇; 姜浩研; 金伟其; 赵益辉; 李瑞强

doi:10.5768/JAO202243.0604005

夜间装备运输中对光学侦拍装置的探测干扰实验

doi: 10.5768/JAO202243.0604005

北京理工大学光电学院光电成像技术与系统教育部重点实验室，北京 100081

基金项目: “十三五”火箭军预研基金（19P5CX0925）

详细信息

作者简介:
吴冠霖（2000—），女，硕士研究生，主要从事光电成像技术研究。E-mail：3120220595@bit.edu.cn

通讯作者:
金伟其（1961—），男，工学博士，教授，博士生导师，主要从事夜视与红外技术、光电图像处理、光电检测与仪器等方面的研究。E-mail：jinwq@bit.edu.cn

中图分类号: TN249
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- 被引次数: 0
出版历程
- 收稿日期: 2022-08-15
- 修回日期: 2022-10-12
- 网络出版日期: 2022-11-07
- 刊出日期: 2022-11-14

Detection and jamming experiment of optical surveillance device in night equipment transportation

Key Laboratory of Photoelectronic Imaging Technology and System (Ministry of Education), School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 针对装备运输过程中可能遭遇侦拍的风险，结合运输安全需求，分析市面上常见的4类消费级侦拍装置(手机、卡片数码相机、单反相机和数码摄像机)的光电可探测性，并实现对各装置的有效干扰。通过搭建“猫眼”激光探测、激光干扰及回波信号接收系统，重点突破典型小口径侦拍装置的探测与识别，以及“猫眼”探测端与目标端的双向成像等理论和关键技术。在此基础上分析不同距离、干扰波长和孔径情况下可见光波段激光对“猫眼”目标的探测及成像干扰效果，并提出一种图像干扰效果评价标准及不同光学侦拍装置的有效干扰阈值。实验结果表明：典型光学侦拍装置在实验距离内具有良好的光电可探测性，并且可被有效干扰；在激光束完全覆盖镜头通光孔径时，目标与装置距离越近，激光束散角越小，波段越接近人眼敏感程度最大波段(555 nm)，激光光束产生的非伤害性成像干扰效果越好。
- 猫眼效应 /
- 光学侦拍装置 /
- 探测 /
- 干扰 /
- 装备运输
Abstract: Aiming at the risks that may be encountered in the process of equipment transportation, the photoelectric detectability of four types of consumer-grade surveillance equipment that commonly available in the market (MB, DC, DSLR and DV) was analyzed and achieved effective jamming to each device in combination with transportation safety requirements. By building a cat-eye laser detection system, laser jamming system and echo signal receiving system, it focused on the breakthrough of the theories and key technologies such as detection and identification of typical small-caliber surveillance equipment, and bidirectional imaging between cat-eye detection device and target. On this basis, the detection and imaging jamming effect of the visible-light band laser on cat-eye target under different distances, jamming wavelengths and apertures were analyzed, and an evaluation standard of image jamming effect as well as the effective jamming threshold of different optical surveillance devices were proposed. The experimental results show that the typical optical surveillance device has good photoelectric detectability in the experimental distance and can be jammed effectively. When the laser beam completely covered the aperture of the lens, the closer the distance between the target and the device, the smaller the divergence angle of the laser beam, the closer the waveband to the maximum waveband of the human eye sensitivity (555 nm), and the better the non-harmful imaging jamming effect generated by the laser beam.
- cat-eye effect /
- optical surveillance device /
- detection /
- jamming /
- equipment transportation

HTML全文

图 1 法国SLD反狙击手激光探测系统

Fig. 1 French SLD anti-sniper laser detection system

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图 2 MIRAGE便携式双筒探测系统

Fig. 2 MIRAGE portable dual-barrel detection system

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图 3 “猫眼效应”原理图

Fig. 3 Schematic diagram of cat-eye effect

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图 4 激光主动探测系统工作原理

Fig. 4 Working principle of laser active detection system

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图 5 “猫眼”激光主动探测系统物理模型

Fig. 5 Physical model of cat-eye laser active detection system

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图 6 实验用激光探测与测量系统

Fig. 6 Laser detection and measurement system for experiment

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图 7 实验用激光干扰系统及侦拍目标

Fig. 7 Laser jamming system and detection target for experiment

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图 8 光学侦拍装置“猫眼”回波图像及识别结果

Fig. 8 Echo images and identification results of cat-eye of optical surveillance device

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图 9 数码摄像机(模拟公共监控)在不同距离上受红光激光干扰成像效果

Fig. 9 Imaging effect of digital camera (analog public surveillance) by red laser jamming at different distances

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图 10 5 mW红光激光干扰不同距离下手机成像效果图

Fig. 10 Imaging effect of mobile phone by 5 mW red laser jamming under different distances

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图 11 5 mW绿光激光干扰不同距离下单反数码相机成像效果图

Fig. 11 Imaging effect of digital DSLR camera by 5 mW green laser jamming under different distances

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图 12 不同功率808 nm近红外激光照射下卡片数码相机成像效果

Fig. 12 Imaging effect of card DC under different power 808 nm near infrared laser irradiation

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图 13 不同束散角下5 mW绿光激光对卡片数码相机的成像干扰效果

Fig. 13 Jamming effect of 5 mW green laser on card DC under different beam dispersion angles

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表 1 实验产品装置主要参数

Table 1 Main parameters of experimental equipment

产品类型	产品型号	传感器类型	图像分辨率/pixel	像素大小/μm
智能手机	RedMi9 M2004J19C	CMOS	2 340×1 080	0.7×0.7
卡片数码相机	PowerShot SX720 HS	CMOS	5 184×3 888	1.19×1.19
单反数码相机	佳能EOS 200D Ⅱ套	CMOS	6 000×4 000	3.72×3.73
数码摄像机	索尼HDR-CX405	CMOS	4 032×2 272	0.667×0.669

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表 2 远距离下5 mW红光激光图像干扰效果

Table 2 Remote image jamming effect under 5mW red laser

干扰距离/m	卡片数码相机/%	数码摄像机/%	单反数码相机/%	智能手机/%
10	78.10	86.70	69.00	99.20
20	67.40	71.40	54.20	73.90
30	63.30	64.20	37.00	49.40
40	19.90	42.70	21.40	32.70
50	16.20	24.30	18.80	28.70

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表 3 不同距离下5 mW红光激光图像干扰效果

Table 3 Jamming effect of 5 mW red laser under different distances

干扰距离/cm	卡片数码相机/%	数码摄像机/%	单反数码相机/%	智能手机/%
20	100.00	77.60	100.00	100.00
40	79.10	71.40	85.70	64.50
60	74.20	71.30	84.80	56.10
80	72.10	61.60	79.70	37.60
100	66.40	58.60	76.60	33.80
120	57.60	43.60	72.90	30.40
140	47.30	13.90	61.10	26.60
160	39.10	11.50	35.30	22.50
180	25.50	8.00	27.20	17.80
200	18.40	6.33	18.30	16.30

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表 4 不同束散角下5 mW绿光激光对图像的干扰效果

Table 4 Jamming effect of 5 mW green laser under different beam dispersion angles

激光束散角/（°）	卡片数码相机/%	数码摄像机/%	单反数码相机%/	智能手机/%
0.72	100.00	100.00	100.00	100.00
3.72	29.20	33.10	98.10	40.00
5.14	17.20	14.60	28.40	27.90
6.56	10.30	11.10	24.70	20.10
7.97	5.16	5.51	20.60	13.80

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