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主动拒止技术是远距离使用毫米波电磁能以阻止、延缓和挡回前进之敌的一项突破性非杀伤技术。在杀伤性对抗出现之前，以非杀伤方法阻止单兵前进有望能拯救无数条生命。
该技术是由美国空军研究实验室和美国国防部非杀伤武器联合董事会合作研发的。在过去10年里共耗资近4 000万美元。
车载主动拒止系统打算用来保护军事人员免于遭到1 000米有效射程的轻武器火力，但据称其有效作用距离仅为640米。
对抗车载主动拒止系统的措施很简单，如穿上厚衣服、携带金属片甚至是可盖的废料作为屏蔽或反射器。
主动拒止技术作用一台发射机对实验对象反射95GHz毫米波的窄波束。该波束以光速传播，其能量抵达实验对象并穿入皮肤不到1/64英寸深，其表面很快发热。数秒钟内实验对象感到一股高热，当反射机关闭或实验对象离开波束时高热感觉即消失。据报道，2秒钟的高热足以将皮肤加热到摄氏54℃。摄氏50℃时，疼痛的自然反射使人能在不到1秒钟内自动离开。有人在该波束下停留250秒钟而皮肤未被烧伤。
由于主动拒止技术采用了低能量波束，尽管使人感觉高热，但却无伤害。由该技术产生的热致感觉与用手触摸一下已点亮片刻的灯泡的感觉大致相同。但是，与触摸灯泡不同的是，由于该技术产生的毫米波波束的较浅穿透深度和较低的电磁能量而不会快速烧伤皮肤。反射机只需开机几秒钟，即可产生所需的热致感觉。
Active Denial Technology is a breakthrough non-lethal technology that uses millimeter-wave electromagnetic energy to stop, deter and turn back an advancing adversary from relatively long range. It is expected to save countless lives by providing a way to stop individuals without causing injury, before a deadly confrontation develops.
The technology was developed by the Air Force Research Laboratory and the Department of Defense’s Joint Non-Lethal Weapons Directorate. Approximately $40 million has been spent on this technology over the past ten years.
This non-lethal technology is intended to protect military personnel against small-arms fire, which is generally taken to mean a range of 1,000 meters. The system is described as having a range of 700 yards.
Countermeasures against the weapon could be quite straightforward — for example covering up the body with thick clothes or carrying a metallic sheet — or even a trash can lid — as a shield or reflector.
Active Denial Technology uses a transmitter to send a narrow beam of 95-GHz millimeter waves towards an identified subject. Traveling at the speed of light, the energy reaches the subject and penetrates less than 1/64 of an inch into the skin, quickly heating up the skin’s surface. Within seconds, an individual feels an intense heating sensation that stops when the transmitter is shut off or when the individual moves out of the beam. According to reports, a 2-second burst from the system can heat the skin to a temperature of 130°F. At 50 °C, the pain reflex makes people pull away automatically in less than a second. Someone would have to stay in the beam for 250 seconds before it burnt the skin.
Despite the sensation, the technology does not cause injury because of the low energy levels used. The heat-induced sensation caused by this technology, is nearly identical to the sensation experienced by briefly touching an ordinary light bulb that has been left on for a while. Unlike a light bulb, however, active denial technology will not cause rapid burning, because of the shallow penetration of the beam and the low levels of energy used. The transmitter needs only to be on for a few seconds to cause the sensation.
该技术是由美国空军研究实验室和美国国防部非杀伤武器联合董事会合作研发的。在过去10年里共耗资近4 000万美元。
车载主动拒止系统打算用来保护军事人员免于遭到1 000米有效射程的轻武器火力，但据称其有效作用距离仅为640米。
对抗车载主动拒止系统的措施很简单，如穿上厚衣服、携带金属片甚至是可盖的废料作为屏蔽或反射器。
主动拒止技术作用一台发射机对实验对象反射95GHz毫米波的窄波束。该波束以光速传播，其能量抵达实验对象并穿入皮肤不到1/64英寸深，其表面很快发热。数秒钟内实验对象感到一股高热，当反射机关闭或实验对象离开波束时高热感觉即消失。据报道，2秒钟的高热足以将皮肤加热到摄氏54℃。摄氏50℃时，疼痛的自然反射使人能在不到1秒钟内自动离开。有人在该波束下停留250秒钟而皮肤未被烧伤。
由于主动拒止技术采用了低能量波束，尽管使人感觉高热，但却无伤害。由该技术产生的热致感觉与用手触摸一下已点亮片刻的灯泡的感觉大致相同。但是，与触摸灯泡不同的是，由于该技术产生的毫米波波束的较浅穿透深度和较低的电磁能量而不会快速烧伤皮肤。反射机只需开机几秒钟，即可产生所需的热致感觉。
Active Denial Technology is a breakthrough non-lethal technology that uses millimeter-wave electromagnetic energy to stop, deter and turn back an advancing adversary from relatively long range. It is expected to save countless lives by providing a way to stop individuals without causing injury, before a deadly confrontation develops.
The technology was developed by the Air Force Research Laboratory and the Department of Defense’s Joint Non-Lethal Weapons Directorate. Approximately $40 million has been spent on this technology over the past ten years.
This non-lethal technology is intended to protect military personnel against small-arms fire, which is generally taken to mean a range of 1,000 meters. The system is described as having a range of 700 yards.
Countermeasures against the weapon could be quite straightforward — for example covering up the body with thick clothes or carrying a metallic sheet — or even a trash can lid — as a shield or reflector.
Active Denial Technology uses a transmitter to send a narrow beam of 95-GHz millimeter waves towards an identified subject. Traveling at the speed of light, the energy reaches the subject and penetrates less than 1/64 of an inch into the skin, quickly heating up the skin’s surface. Within seconds, an individual feels an intense heating sensation that stops when the transmitter is shut off or when the individual moves out of the beam. According to reports, a 2-second burst from the system can heat the skin to a temperature of 130°F. At 50 °C, the pain reflex makes people pull away automatically in less than a second. Someone would have to stay in the beam for 250 seconds before it burnt the skin.
Despite the sensation, the technology does not cause injury because of the low energy levels used. The heat-induced sensation caused by this technology, is nearly identical to the sensation experienced by briefly touching an ordinary light bulb that has been left on for a while. Unlike a light bulb, however, active denial technology will not cause rapid burning, because of the shallow penetration of the beam and the low levels of energy used. The transmitter needs only to be on for a few seconds to cause the sensation.