美国国防部长Pete Hegseth上月签署备忘录，授权国土安全部在美墨边境测试一种军用非致命武器系统1。这项被称为"主动否认系统"的技术将进行为期7个月的试验，自9月开始1。
该系统通过发射95吉赫兹的能量束作用于人体表皮，深度约为1/64英寸，产生灼热感觉1。这种灼热感通常可持续10至15分钟1。国土安全部称此项测试旨在评估新技术以提升边境安全效能1。
2012年，美国海军陆战队曾宣布该系统符合美国的国际法律义务1。特朗普第一届任期内的官员曾在2018年和2020年分别试图利用该系统阻止移民越境和控制华盛顿特区的抗议活动1。
U.S. Defense Secretary Pete Hegseth signed a memorandum authorizing the Department of Homeland Security to conduct a seven-month trial of the Active Denial System, a military non-lethal weapon, along the US-Mexico border beginning in September 1. The system operates by projecting a 95-gigahertz energy beam that penetrates approximately 1/64 inch into the skin, producing an intense heating sensation lasting between 10 and 15 minutes 1. According to DHS, the test aims to evaluate emerging technologies to enhance border security effectiveness 1.
The Active Denial System has a documented history within U.S. defense circles. In 2012, the Marine Corps declared the weapon compliant with American international legal obligations 1. During the first Trump administration, government officials previously sought to deploy the system in different contexts—in 2018 to prevent migrants from crossing the border and again in 2020 to manage protests in Washington, DC 1.
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