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  (Source: TriStar Pictures)

MIT's radar system  (Source: MIT)
Radar system could be used in the military in combat situations

Researchers at MIT's Lincoln Laboratory have created a new radar system that allows them to "see" through walls.

The radar system works similarly to how human vision works. Just as waves of visible light bounce off of objects and hits the retinas in our eyes, the radar system delivers radio waves that bounce off targets and make their way back to the radar's receivers.

The reason we can't see through walls is because light can't pass through solid objects in the amount needed. In the case of radar systems, it's difficult to send strong signals that can pass through solid walls and then return through that solid wall to the receivers once again. The signal weakens as it makes its trip, and according to the study, 99 percent of signals don't make it back through the wall. If it does, the signal is weakened to about 0.0025 percent of its "original strength." Signal amplifiers can be purchased to solve this issue, but even so, figuring out the range, resolution and speed needed for real-time images is a challenge.

Despite this difficulty, MIT Lincoln researchers have managed to create a system that can detect certain objects on the other side of a solid wall, allowing them to "see" through these walls.

MIT's radar system, which consists of an array of antenna situated in two rows, one of which has eight receiving elements and the other 13 transmitting elements, is placed on a movable cart with some extra computing equipment. The transmitters emit waves of a certain frequency in the direction they desire, and signal amplifiers ensure that these waves make it through the wall and back.

But that's not all. The type of radio wavelength used is just as critical as how to send the signal. While longer wavelengths can travel through the wall and back with relative ease, they also need a larger radar system to identify human targets. So the team used S-band waves, which are shorter and have more issues with signal loss, but the radar tool can be kept smaller, which is important for this system to be used in the military. Signal amplifiers can handle getting the waves through the wall and back, but so far, 8-inch thick walls is all it can do.

Another issue is that the wall itself shows up as the brightest spot on the radar system, making it challenging to focus on what's on the other side of the wall. The MIT fixed this by using an analog crystal filter, which shows differences in frequency between the waves coming off of the wall and those coming from the target.

"So if the wall is 20 feet away, let's say, it shows up as a 20-kilohertz sine wave," said Gregory Charvat, study leader and technical staff at MIT Lincoln. "If you, behind the wall, are 30 feet away, maybe you'll show up as a 30-kilohertz sine wave."

The MIT radar system can be used as far as 60 feet away from the wall, and gives real-time picture movement behind the wall at a rate of 10.8 frames per second. When testing the radar system, the researchers were able to produce a blob of a human that shows up in bird's-eye-view.

For now, the system can only track moving objects instead of inanimate objects, but could still eventually be used in the military because even a human standing still moves a little bit, and this radar system can track that. But further research is required to make the blobs look more like the objects the waves are targeting.

Source: CNN

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By Cheesew1z69 on 10/19/2011 9:47:55 AM , Rating: 2

By UnauthorisedAccess on 10/19/2011 7:33:44 PM , Rating: 2
I was thinking the same thing.

Step 1: See through walls
Step 2: Use gun that shoots through walls

The combination of this tech should be given the acronym MW2IRL.

By inperfectdarkness on 10/21/2011 8:04:03 AM , Rating: 2
how about we just call it "farsight xr-20"?

By jefferai on 10/21/2011 1:48:27 PM , Rating: 2
You're all such youngsters.

See Robocob. The original movie, not the crap that followed it.

By gwidionx on 10/19/2011 1:39:16 PM , Rating: 5
I can just see a big group of geeky scientists standing next to their machinery doing vital research outside the women's locker room at the gym...

This is not new!
By Chillin1248 on 10/19/2011 5:44:32 PM , Rating: 2
This kind of system has been around for a while and used in the military:

"Camero is a world leading provider and pioneer of Sense-Through-The-Wall (STTW) solutions. The Xaver™ full line of products provide real-time situational awareness for observing multiple stationary and moving objects concealed behind walls or barriers.

Utilizing advanced micropower radar technology, the Xaver™ systems provide a tactical and revolutionary solution for troops in urban environments as well as law enforcement officers for domestic searches and operations.

The Xaver™ products have been successfully deployed worldwide with elite customers for both Military and Homeland Security (HLS) applications."


RE: This is not new!
By bigdawg1988 on 10/20/2011 4:50:37 PM , Rating: 2
yeah, my paranoid brother-in-law has been tracked by the government for years through walls, when they're not shooting lasers at him. Jeez, Thanksgiving is going to suck if they publicize this. Why don't those MIT people shut up and keep this stuff to themselves. Stop feeding the conspiracy theorists!

Wall hack
By Lorfa on 10/19/2011 9:45:55 AM , Rating: 2

30 kHz
By ipay on 10/19/2011 1:56:21 PM , Rating: 2
Please explain to me how the distance is going to change the frequency of the radar. You don't lose your radio channel as you drive further away from the tower. My guess is they are looking at how long it takes waves to travel back and just select a distance (whatever is behind the wall)...

The quality of research.
By drycrust3 on 10/19/2011 4:56:02 PM , Rating: 2
99 percent of signals don't make it back through the wall

This is about a 20 dB loss, which is apiece of cake to the average commercial amplifier, let alone a military one. My car radio does better than that!
So if the wall is 20 feet away, let's say, it shows up as a 20-kilohertz sine wave,

I'm confused: how do you get from a nanosecond long pulsed GHz radio wave reflection to one that is continuous and just above the audio range?
For now, the system can only track moving objects instead of inanimate objects

OK! We are talking about a type of Doppler RADAR! So how come the wall shows up as a "20 KHz sinewave" when this thing only detects movement?

About 10 years ago I saw a picture of a leaf "x-rayed" through a large piece of solid concrete using something like beta or gamma radiation in a book on nuclear physics.

Artists Impression
By MadisonCheesehead on 10/19/11, Rating: -1
RE: Artists Impression
By Reclaimer77 on 10/19/2011 10:23:50 AM , Rating: 5
Sigh kids these days...

It's from Total Recall! *slaps you in face* Learn your pop culture!

RE: Artists Impression
By Omega215D on 10/19/2011 10:32:02 AM , Rating: 2
To add, the gun is red because it points out a weapon (banned in their Metro) and highlights the item as a flashing beacon and item shape.

Now get your ass to Mawrs.

RE: Artists Impression
By Reclaimer77 on 10/19/2011 10:40:46 AM , Rating: 3

hehe one of the all time gratuitous scenes in film history.

RE: Artists Impression
By Mitch101 on 10/19/2011 1:19:47 PM , Rating: 3
And its being remade because Hollywood is out of original ideas.

RE: Artists Impression
By Reclaimer77 on 10/19/2011 1:59:05 PM , Rating: 1
No! NO!!! FUCKING A Hollywood, godfuckingdamnit! Not a Total Recall remake!

As the nation states Euromerica and New Shanghai vie for supremacy

So instead of the Mars plot we get the typical pseudo-political messages from Hollywood leftists? Why even call this fucking thing Total Recall in that case?

Mitch you just ruined my entire day. Hope you're happy.

RE: Artists Impression
By MrBlastman on 10/19/2011 2:26:20 PM , Rating: 2
Don't blame him. Blame Hollywood. But please, please don't let them ruin your day. Cast them out. Flush them down your toilet.

I have.

I'm happier since I have. I love independent and foreign films. Heck, I could care less if I sometimes have to read subtitles. They're all better than the stupid crap Hollywood puts out.

RE: Artists Impression
By MrBlastman on 10/19/2011 2:31:44 PM , Rating: 2
Oh, and yes, it is a complete travesty they are remaking an utterly perfect film.

Next on their list, Stanley Kubrick's entire portfolio of cinematography! (I hope not--he only had one bad film, that silly Tom Cruise/Kidman film). Ugh. I'm waiting for it though.

One day they will remake Clockwork Orange, 2001, Full Metal Jacket (seriously? impossible I say) and most importantly... Doctor Strangelove (RIP Peter Sellers). That will be the day Hollywood dies for good.

Don't even get me started with David Lynch. Oh, but the day will come. They'll remake Blue Velvet and it'll mess with our wallets that time around, not our heads.

Hollywood will piss all over the greatest directors of all time all in the name of profits and dumbing down America. They're only getting started.

RE: Artists Impression
By ViroMan on 10/19/2011 2:58:08 PM , Rating: 2
yes... just think of it as a book with moving pictures.
I myself watch anime with subs some times and thats how it seems to me.

RE: Artists Impression
By Reclaimer77 on 10/19/2011 3:28:04 PM , Rating: 2
Hollywood has also put out timeless classics, like the original Total Recall :P So I can't totally dump them.

I've tried foreign and indie films and I guess they just aren't me for the most part. There's a cultural subtext that's hard to identify with and also reading subtitles I feel you lose some of the emotional connection when you can't understand the dialogue.

RE: Artists Impression
By MrBlastman on 10/19/2011 4:53:00 PM , Rating: 2
Sure, they have, some great classics. That was Hollywood of old, not of now. Hollywood of now is broken.

RE: Artists Impression
By Mitch101 on 10/19/2011 9:04:30 PM , Rating: 2
Sorry Reclaimer77 you had better not look at them rebooting the Spider Man franchise either especially so soon.

RE: Artists Impression
By Reclaimer77 on 10/19/2011 9:22:42 PM , Rating: 2
Don't care. I never loved those movies anyway. As far as comic book movies go anyway.

RE: Artists Impression
By Mitch101 on 10/20/2011 12:47:11 PM , Rating: 2
I give hollywood 5 years to remake Inception and when lucas dies we will probably get a reboot of the star wars franchise.

Nothing is sacred.

RE: Artists Impression
By Samus on 10/20/2011 1:59:17 PM , Rating: 2
Two weeks.

RE: Artists Impression
By Mitch101 on 10/20/2011 2:34:53 PM , Rating: 2
Yea Star Wars already does change with every release. Damn you Lucas!!!

RE: Artists Impression
By Natch on 10/20/2011 8:28:07 AM , Rating: 2
The ONLY thing going for it will be the inclusion of Kate Beckinsale and Jessica Biel.

Leave it to Hollywood.....take a bad concept, include a couple hot actors/actresses, and shove it down the throats of America. **SIGH**

RE: Artists Impression
By bigdawg1988 on 10/20/2011 4:46:04 PM , Rating: 2
Even worse, they have real actors in this one! How can they do that?!?
It's a little early for Total Recall isn't it? (Checks IMDB) OMG! I'm freakin' old!!

It better be damn good!

RE: Artists Impression
By gwidionx on 10/19/2011 1:35:53 PM , Rating: 2
eww pop culture

RE: Artists Impression
By izmanq on 10/19/2011 9:56:25 PM , Rating: 2
I think they should take image from Aliens movie instead. This more like the motion sensor in the movie :D

RE: Artists Impression
By Natch on 10/20/2011 8:31:05 AM , Rating: 2
I suppose it was easier to use that image, for recognition of source (for most of us, at least! *wink*), but in reality, this system reminds me more of the super rifles they had in "Eraser" (coincidentally, another Ah-nold film).

RE: Artists Impression
By FITCamaro on 10/20/2011 12:42:26 PM , Rating: 2


RE: Artists Impression
By priusone on 10/20/2011 11:20:08 PM , Rating: 2
This is Dailytech.con, not Family Guy. That pic confused me, too. But, I just watched the movie. Just because the guy hasn't seen the show, or if he's like me and wouldn't remember it, does he really deserve a 0?

RE: Artists Impression
By futrtrubl on 10/19/2011 10:25:29 AM , Rating: 2
You have failed to notice that almost every DT article contains a picture from pop culture, this one being from Total Recall.

RE: Artists Impression
By rburnham on 10/19/2011 10:31:53 AM , Rating: 2
Get your ass to Mars.

RE: Artists Impression
By MrBlastman on 10/19/2011 11:44:33 AM , Rating: 2

Too bad it doesn't spawn like it used to on .

“Then they pop up and say ‘Hello, surprise! Give us your money or we will shut you down!' Screw them. Seriously, screw them. You can quote me on that.” -- Newegg Chief Legal Officer Lee Cheng referencing patent trolls

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