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NASA's Heartbeat Detector Helps Search For Mexico Quake Survivors

FINDER, which stands for Finding Individuals for Disaster and Emergency Response, was developed as a collaboration between NASA and the US Department of Homeland Security.

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Updated:September 26, 2017, 11:04 AM IST
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NASA's Heartbeat Detector Helps Search For Mexico Quake Survivors
Space Station to Get New Wardrobe For Science Payloads (Image: Getty Images)
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A suitcase-sized radar instrument capable of detecting human heartbeats under rubble is helping disaster relief workers on the ground in Mexico City respond to the 7.1-magnitude earthquake on September 19 that killed hundreds, NASA has said. FINDER, which stands for Finding Individuals for Disaster and Emergency Response, was developed as a collaboration between NASA and the US Department of Homeland Security. "Our hearts go out to the people of Mexico," said Neil Chamberlain, Task Manager for FINDER at NASA's Jet Propulsion Laboratory, Pasadena, California.

"We're glad to know our technology is being used to make a difference there," Chamberlain added. When the instrument was deployed in Nepal after a major earthquake in 2015, it helped find four men trapped under a collapsed textile factory. FINDER sends a low-powered microwave signal -- about one-thousandth of a cell phone's output -- through rubble. It looks for changes in the reflections of those signals coming back from tiny motions caused by the victims' breathing and heartbeats.

In tests, FINDER has detected heartbeats through 30 feet of rubble or 20 feet of solid concrete. The technology evolved from JPL's efforts to develop low-cost, small spacecraft radios, using signal processing developed to measure small changes in spacecraft motion. Since 2015, two private companies have acquired licenses for the technology. They have since taken it to disaster zones, training relief workers to use it and manufacturing new units, NASA said.

Both companies work with the direction of local governments when they travel to disaster sites. FINDER is used alongside a variety of other techniques, including trained dogs, acoustic sensing devices and thermal imagers. All these techniques are usually deployed together.

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