acoustic hailing device (AHD)

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An acoustic hailing device (AHD) being installed on a High Mobility Multipurpose Wheeled Vehicle (HMMWV) (Source: U.S. Army Picatinny Arsenal).

Research Efforts in Long-Range Acoustic Messaging

The Defense Systems Information Analysis Center (DSIAC) was asked to identify key players in U.S. Department of Defense research efforts in long-range (500–1,000 m) acoustic messaging. DSIAC searched open-source documents and the Defense Technical Information…

Research Efforts in Submarine Acoustic Communications

  The Defense Systems Information Analysis Center (DSIAC) was asked to identify key players in the U.S. Department of Defense (DoD) research efforts in acoustic submarine communications. DSIAC searched open-source documents and the Defense Technical…

Targeted Audio Messaging Technologies

What laser, ultrasonic, or similar technologies exist or are in development that can project an audio message to a targeted person or group without a receiver?  DSIAC was tasked with researching technologies and research and development projects that can…

Articles

The U.S. Marines Want to Mount Powerful Lasers on Vehicles That Can Stun or Attack Out-of-Control Crowds

The Marine Corps is on the hunt for a vehicle-mounted laser system that can produce “sustainable and controllable plasma at range” for the purposes of crowd control, according to a U.S. government solicitation. A Small Business Innovation Research (SBIR) solicitation details future needs for a Scalable Compact Ultra-short Pulse Laser Systems (SCUPLS) that, when integrated

Police”s Sonic Weapon Could Cause Hearing Loss

The police have bought 12 Acoustic Hailing Devices (AHD) at a cost Tk 50 lakh each for the purpose of driving away protesters. Although it is a non-lethal weapon, the AHDs give out a piercing sound, which, health experts say, can seriously damage hearing of people within a 1km radius. AHDs allow law enforcers the

New Swarm Technology for Guard Robots

Despite perimeter fences and other site barriers, intrusion into protected areas is not uncommon. When trespassing is detected in a protected area, the main task of security is to intercept the trespasser and to prevent him from committing any malicious acts. An effective solution to this challenge is the use of non-lethal weapons, for example,