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Technology Soldiers Could One Day See Around Corners With the Help of Lasers

19:06  17 january  2020
19:06  17 january  2020 Source:   popularmechanics.com

Avalanche hits Indian army post in Himalayas, 6 killed

  Avalanche hits Indian army post in Himalayas, 6 killed SRINAGAR, India (AP) — An avalanche hit an Indian army post Monday on a Himalayan glacier in the disputed Kashmir region, killing four soldiers and their two civilian porters, the army said. The avalanche happened at height of more than 5,485 meters (17,995 feet) in the northern part of the Siachen Glacier. Rescuers pulled six soldiers and two porters from the snow, said army spokesman Lt. Col. Abhinav Navneet. They were taken by helicopter to a military hospital, where the four soldiers and the two porters died, Navneet said. The surviving two soldiers were undergoing treatment, he said.The group was on patrol near the post when the area was hit by the avalanche, Navneet said.

a man standing in front of a building: As battlefields move to cities, seeing a round corners will give soldiers a huge advantage.© U.S. Marine Corps photo by Lance Cpl. Matt Navarra As battlefields move to cities, seeing a round corners will give soldiers a huge advantage.
  • Scientists are exploring ways to use lasers to "see" around corners.
  • Two promising methods complement each other, one gathering general information about an environment and the other more detailed—but limited—images of objects.
  • The two technologies could some day help soldiers "read" rooms, identifying adversaries without exposing themselves to enemy fire.

Here’s an unexpected way lasers might beam their way onto the battlefield: sneaking a look around corners to detect adversaries.

MIT researchers use shadows to create a video of what happens off camera

  MIT researchers use shadows to create a video of what happens off camera In order for self-driving cars to park themselves, they'll need to be able to see around corners. A team from MIT's CSAIL may have a new way to do that. Using video footage of shadows, they've developed an algorithm that can recreate video of what's happening off the screen. In their experiment, the team filmed a pile of clutter. Off screen, someone created shadows by moving blocks and other objects. Their algorithm predicted the light transport, or the way light is expected to move in a scene, and compared that to the shadows. It then used that info to reconstruct the off-screen video.

University researchers funded by the Pentagon can now get an idea of what’s in a room by reading the interference pattern of a laser beam. This could someday lead to devices that can peer into a room and detect everyone inside, and identify if they are armed.

According to IEEE Spectrum, there have been several methods of using lasers to peep around corners. The first way studies the time it takes a laser light to reach a reflective surface, then go on to reach an object, then come back again. The new process works like this:

The latest method looks instead at speckle, a shimmering interference pattern that in many laser applications is a bug; here it is a feature because it contains a trove of spatial information. To get the image hidden in the speckle—a process called non-line-of-sight correlography—involves a bear of a calculation. The researchers used deep-learning methods to accelerate the analysis.

The original method is useful for a more general look inside a room, for the barest of details, while speckle analysis can discern detailed information within a narrow field of view. The two methods require different systems to operate.

MIT Engineers Create Laser Ultrasounds That Can Look Inside Your Body Without You Even Feeling It

  MIT Engineers Create Laser Ultrasounds That Can Look Inside Your Body Without You Even Feeling It Engineers at MIT have come up with a new approach to medical imaging that is both non-invasive and hands-off the patient. Using lasers, they can peer beneath the surface of the skin without any physical contact required, improving upon the limitations of equipment like ultrasound machines. © Photo: MITThere’s a myriad of techniques and machines that physicians and medical professionals can use to look inside the human body before having to resort to invasive exploratory surgery, but they each have their pros and cons.

A system that can detect people and things inside a room and gather details—all without exposing the user to enemy fire—would be very useful to special forces and ground troops. The Pentagon believes the next battlefield is the “megacity,” cities of 10 million or more people that live in densely-packed neighborhoods. The ability to clear a room, apartment, apartment building, and a city block quickly—and safely—would help friendly forces locate and isolate terrorists, guerrillas, and enemy soldiers and separate them from civilians.

The technology is still limited to laboratory use, where conditions can be carefully controlled. Someday in the future, soldiers could carry handheld devices with them that can tell them if the room ahead holds civilians need assistance or someone waiting in ambush.

It can’t happen soon enough.

Source: IEEE Spectrum.

The US Army wants its soldiers to be able to see enemies and other deadly threats through walls .
The Army is trying to defeat battlefield unknowns by figuring out how soldiers can see through walls, a capability straight out of science fiction.The Army is modernizing in a way it hasn't in decades. The service has already seen the development of incredible new technologies, such as pocket-sized drones and next-generation night-vision goggles wired to a weapon sight to let soldiers shoot around corners.

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