Feeds

DARPA to build nothingness detector for tunnel sniffing

Bottom falls out of subterranean-lair market

The smart choice: opportunity from uncertainty

Renowned US military tech bureau DARPA has issued a request for an ultrasensitive gravity-measuring instrument which could be mounted in a low flying aircraft and detect underground tunnels.

The project, known as Gravity Anomaly for Tunnel Exposure (GATE), was formally announced on Friday. In essence, it will detect an absence of underground mass - dirt, rock or whatever - by picking out the tiny drop in the local gravity caused by the missing stuff:

The explicit action of digging tunnels introduces a void into the subsurface geology. Gravity gradiometers measure tiny spatial variations in the pull of gravity caused by these underground voids. The GATE objective is to develop, integrate, and demonstrate a prototype airborne gravity gradiometer system which is capable of detecting the mass deficit of a void in the presence of geological and topological variability.

A nothingness detector, in other words, able to perceive the hole rather than the doughnut. But in this case the wacky research agency seems to believe that the current state of the art in gradiometer systems is close to being discriminating enough to do the job already. What's needed is the ability to tune out all the noise and clutter from natural geological features, the carrying aircraft's vibration and so forth.

"This is not expected to be a sensor technology development activity, but rather focus on adapting the existing technology to GATE application," says the solicitation document (pdf).

DARPA thinks that it should be possible to fit a ground-penetrating grav spyeye and all necessary processing on board the carrying aircraft, which can be manned or unmanned. There shouldn't be any need to pipe massive amounts of sensor data back to a ground station for analysis, either. The final prototype, according to the solicitation, should offer "the ability to detect the presence of a tunnel" and "the ability to image skeletal outline of a tunnel network".

As to what you might use the GATE tunnel-sniffer gear for, DARPA does offer a hint:

To address the more immediate underground tactical threats, the Gravity Anomaly for Tunnel Exposure program will focus on border and perimeter breaching tunnels.

There have been a few border-breaching tunnels in the news lately, as it happens. ®

The Power of One Infographic

More from The Register

next story
World Solar Challenge contender claims new speed record
One charge sees Sunswift travel 500kms at over 100 km/h
Vote now for LOHAN's stirring mission patch motto
Does the shed actually know no bounds, or what?
SMELL YOU LATER, LOSERS – Dumbo tells rats, dogs... humans
Junk in the trunk? That's what people have
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
Beancounters tell NASA it's too poor to fly planned mega-rocket
Space Launch System would need another $400m and a lot of time
Jurassic squawk: Dinos were Earth's early FEATHERED friends
Boffins research: Ancient dinos may all have had 'potential' fluff
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.