Radar Detects Concealed Guns on People in Public Places

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An electrical engineering professor at the University of Michigan believes that a type of radar, part developed by the Department of Defense, has the potential to be used as a means of detecting concealed weapons. Originally intended for military use, it is possible that the millimeter-wave radar system could be used to detect weapons across distances as large as a football field.

Professor Kamal Sarabandi was watching the aftermath of the Newtown shooting in Connecticut when he was hit by the notion that his work for the military may have a use a little closer to home.

The technology that he developed is currently being used in a number of applications, including collision avoidance systems in cars and in military targeting systems. The radar itself isn’t particularly unique, but Sarabandi’s pairing of the tech with Doppler radar signal processing allows it to pick out an individual in a crowd using a technique called polarimetry.

Doppler radar has a range of applications from speed traps to predicting the weather, using the Doppler effect to measure the speed of a given object. Sarabandi used motion capture techniques to identify the reflected signals from the limbs and torso of a human walking, creating what he calls “the DNA of walking.”

A computer is programmed to recognize the pattern, searching for a particular glare on the subjects chest, such that a hidden metal object might create. The technology focuses on the pedestrian’s chest as it’s both a common place that people hide weapons and acts as a fairly smooth backdrop, making it easier to pick out anomalies.

The polarimetric radar used by the team works by sending out a signal at a particular polarization, and carefully analyzing the polarization of the signal that bounces back. An irregular metal object can change the polarization of the signal, allowing for the detection of concealed items.

Though the technology has not yet undergone any human testing, Sarabandi’s team has carried out a simulation using a mannequin painted with a coat that reflects radar-like human skin. The mannequin was placed on a turntable in an anechoic chamber, a room designed to absorb all echoes and reflections.

The techniques could be used to scan large groups of people, with each subject taking less than a second to process. This would then allow security personnel to closely observe the individual in question or even take suspects aside for more comprehensive scans.

The technology has significant potential to provide extra security in a wide range of applications, and while not entirely infallible, is significantly faster and less intrusive than the use of metal detectors.

One point worth noting is that while the technology appears to provide a fairly accurate means of locating hidden metal objects, it might be less effective at spotting some of the 3D printed weapons that are becoming more and more of a security issue as the technology continues to develop.

Read more at: Gizmag

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  • gadogs00

    Why Conceal? As one has the legal permit, why would one need to carry conceal? Open carry should be the way to carry then there’s no doubt as to whom has a fire arm. It just seems to me – Once again those of us that are law abiding gun owners are being targeted. It’s funny that some 40 too 50 years ago such as introducing more gun laws today – crime goes up. Enforce the current laws on the books now and have more judges that will prosecute harder justice for those that commit felonies with fire arms.

    • Common Sense….open carry makes you a target for good+bad guys! If something goes down where I need to protect me or mine,it needs to be a suprise!!!

      • HappyClinger

        Also it’s really really hard to avoid a conflict if everyone around knows you’re carrying.

        • BigUgly666

          See above.

        • matism

          So it is “really hard for “Law Enforcement” to “avoid a conflict“? Or are they special because they are Only Ones?

      • BigUgly666

        I’ve open carried for nearly a decade in many different States – never had a problem.

      • Duncan Maynard

        JD, you’re absolutely right. I don’t care what you open carry guys think you know about it. You may not have had trouble yet, but it’s not over. A man who definitely knew what he was talking about gave me the skinny on this when I was broadcasting. If you’re known to carry, the bad guys use a different approach than if they think you’re easy pickings. You can figure out the difference.

    • I choose to carry concealed but I have no problem with one who chooses to open carry. As for this radar meant to detect guns on a person it will be going bananas in quite a few states because concealed weapon permits are a LOT more common now than it used to be.

      I do not believe the govt should be using technology like this to usurp liberty. I have no problem with this being used on private property, if they choose to be a criminal empowerment zone/gun free zone, but this has no place on the streets of the USA. That more people do not see this as a potential infringement of liberty is frankly, depressing. We’re moving closer and closer to 1984.

      • ken

        perfect for schools with kids bringing guns in their backpacks

        • BigUgly666

          Since when has a child in school surrendered their right to privacy and unlawful search?

          • Since a child in school can NEVER legally carry a gun!

          • BigUgly666

            You must be a liberal …. the kind that loves to twist and pervert everything, taking a tidbit and turning it into the entire universe.
            This is about unlawful search – not just about “guns”.

          • They aren’t supposed to have drugs either but that hasn’t stopped them.

      • There should be only a very few places that are truly Gun Free Zones. Post Offices and sidewalks in front of them, hospitals, schools and a few others should not be some of them. Court rooms, airports past the security checkpoints…I can live with those places but not much else.

    • The sight of people walking around with guns on their hips makes the namby pambys uncomfortaple.

      • Freedom1911

        Who gives a flying f*** what the namby pambys think?

      • Annymous Patriot

        They SHOULD be uncomfortable. They are retards, happily wondering around with nothing but hope and a prayer that a criminal doesn’t decide to take advantage of their defenceless state. Have them run and stick their heads in the sand, it’s what they are good at.

    • ken

      element of surprise. Then you have to go what is the norm in your neighborhood. Where I like everyone that caries caries concealed. That is why our crime rate is so low. A potential thief thinks twice about robbing a business since he has no clue who else in that building is armed.

    • BigUgly666

      Open Carry is generally lawful and legal without any kind of permit.

      • medic2003

        Open carry in rural areas is generally preferred and no one says a dang thing about it. In municipalities though it can be frowned on or against city ordinance. Just better to conceal it and go about your day without the hassle.

        • BigUgly666

          Sorry, but I must disagree, strongly, with your sentiment.
          People really need to see guns more often and need to start realizing that they are no more than a tool …. just like a hammer …. that can be used for good or for ill.

          WE need to stand up to “law enforcement” when they attempt to breach the law they are sworn to uphold. If it is lawful to carry – THEY must uphold that law, not tell that it’s best if we don’t do it. THEY need to start telling those who wet themselves that we are engaged in a perfectly legal and lawful undertaking and that there is nothing wrong with carrying a weapon.

          I will support you in your decision to not carry openly and expect you to support me in my decision.

          • Gun Owner

            There is no such thing as open carry in NYS, you can’t even have your nonfolding knife on your hip without attracting law enforcement.

          • BigUgly666

            Well, sucks to be you if you are in New York! You are among the “elite” since only 5 States have no open carry and 15 others have “licensed” open carry – the rest of the States … open carry is lawful, as it should be and as was envisioned by our Founding Fathers.

  • That’s an invasion of privacy and I don’t especialy care to have my body exposed to all the radar waves.

    • ken

      Not used on the streets for legal citizens but an option for schools where kids bring guns and other weapons in their backpacks

      • Might also be used for airports and sports arenas.

        • Even in airports one that has a legal firearm should be able to carry that weapon up to the first security point. Utah has the right idea on this one. And those concealed carry holders can also carry into schools. I don’t see them having a problem with mass shootings since they passed these laws.

          As for the technology…you give the government an inch and they will take more than a mile…and on the way take out that guy walking for his Camel cigarette.

          • I agree 100%. I was just commenting on where else they would most likely deploy the tech.

      • Richard M

        Do you honestly believe that? If you do, you are truly lost. The govt never stops at step one, there is always a step 2 & 3 & 4…etc.

      • HappyClinger

        Ha – the way things are going these days, if I were a student, I’d want to be armed.

      • Make the kids go through metal detectors like they do in many schools.

    • All I see is an attempt to grab some taxpayer money for research
      purposes. Who conceal carries on their chest anyway? It’s usually on
      their hip, in the small of their back, or under their arm. But you have a point also. This is an invasion of privacy, and without a warrant should not be allowed.

  • Son_of_Taz

    Stealth holsters – coming to a gun shop near you!

    If stealth technology can hide a 158,000lb aircraft – the B2 bomber – then making a holster absorb the relatively low energy radar from this gizmo.

  • We have long ago passed 1984. Far pass. They really don’t care we have our guns, they have all the rest including the popular vote. We have become a country of followers and sheep.

  • Robby777

    Just develop metallic shirts with sewn in shapes and flood the sensors in groups. Develop wallets that are part metallic for ” scanning prevention”… and so on….

  • This professor thinks most people who carry, carry on their chest? Really? Not even close!

  • Brian P.

    Detect a concealed weapon? So what! There are millions of people nationwide legally authorized to do so. Is it going to check for the permit too?

    What about in states like Alaska, Arizona, and Vermont where absolutely no permit whatsoever is required to carry a concealed weapon? Essentially, every person in the state 21 or older and not a felon is allowed to carry one.

    So you have 2 people walking down the street with a concealed weapon, one a law-abiding citizen legally authorized to do so and the other a felon or criminal not allowed. Then what? You’re back to the old school way of waiting until the bad actually does something. This device is useless in this regard.

    Say you just have it at a ‘gun free’ zone like school and it detects a gun on a nutjob entering the building. You still have to call the police and wait and they aren’t going to get there any faster.

    I don’t see much practical use of this device other than to just another way to harass responsible, law-abiding people who simply want to protect themselves.

    This device probably costs tons of money is still no better than having armed people present BEFORE the bad guys show up.
    Why are people so freakin phobic about the plain old common sense approach of arming yourself and shooting bad guys when they show up? It remains the most efficient and effective way to stop horrific events in the quickest way possible.

  • Richard M

    Can you say more nanny state bs. We’ll have scanners while England has cameras.

  • charlie

    yeah just what we need in the schools, then when our kids and grandkids start glowing in the dark we can save on electricity. is there no end to the idiosy of this generation

    • Patricia Bennett

      look at our schools and the crap they feed our kids. its been going on for decades. when I was in elementary school, early 70’s, they came out with this new math sceem. my mom made more than one visit to the school asking the teacher what was going on. he said he had to go back to a night class to learn how to teach that crap. our history wasn’t accurate either and now its non-recognisable. I don’t want to get into english & science.
      Only book I know to be least changing is the Bible and its not allowed in our schools.

  • HappyClinger

    “…3-d printed weapons becoming more and more of a security issue” because they cannot be detected with this newest attempt by Big Brother to spy on people? What part of “the right of the People to keep and bear arms shall not be infringed” do people not understand? And what part of “shall be secure in their persons…against unreasonable search and (possible) seizure” do they not get, as well? Folks, a law, or a constitution, is only as good as its enforcement. The Constitution, written for We the People, is ours to enforce.

  • U of MI survives on government grants !! There are more foreign students there than you can believe. Tons of tax dollars already being poured into that school. Check out the prof’s name, that isn’t a John Smith.

  • This has unlawful “SEARCH & seizure” written all over it. And you thought the law enforcement use of “drones” was going to be problematic.

  • Against all most every ammendment, this is becoming a nazi state by the day, time to fight or throw in the towel and drink the pissy cool-aid of the left wing brown shirts who love living on the give me plantation of all races and colors, a bunch of little hitlers with brains the size of a pebble.

  • SFS444

    Wrap it in lead lined holster.

  • I could just see it now. They’ll be stopping & searching people that have metal cigarette cases, flasks, those metal wallets that you see on TV! O YEA I see this working REAL WELL!!! And what about people who ARE licensed to carry concealed? I could just see the cops pounce on some undercover cop or Federal agent who’s working undercover & the “beat cops” don’t know it!! THAT would be GREAT!!!

  • Mark

    I agree that it is an invasion of privacy unless it is used in situations such as prisons or airports instead of or in addition to metal detectors to help process people more quickly. I guess that if it is only used in areas where firearms are forbidden even by people with concealed carry permits (airports, prisons, post offices etc) it would not bother me a whole lot. If I can’t take a weapon in, then it is good to know that no one else can either.

  • wtward

    The main Problem i see with this is that if the government ever does decide to physically try and take our guns they could use this technology to detect any hidden caches in and around our houses, also CCW people would be outed at every point there is one of these scanners.

  • Enjoy fascism much?
    Oh how nice, it is an idea from the fearmongering fascist left, where no one deserves any amount of privacy (for the illusion of security).

  • Apparently the author didn’t want to take credit for this piece of garbage. Note how he/she referred to those carrying concealed as “suspects” and “suspicious”. Disgusting.

    • yacope

      CC holders are possibly the most law abiding citizens out there, responsible and safe and she calls us suspects as if we go around shooting up stuff for the he!! of it…smh

  • Also, could I be pulled aside and searched just for carrying concealed? I’m automatically a bad guy?

  • BigUgly666

    Maybe everyone should just start carrying a piece of tinfoil crumpled up and folder to a general “gun” shape.
    That would really drive them batsht crazy.

  • Concerned

    So if a man has a mechanical heart, or a pacemaker, the cops can jump him, beat him to the ground and discover that he doesn’t have a gun!

    • yacope

      good point

  • “…it might be
    less effective at spotting some of the 3D printed weapons that are
    becoming more and more of a security issue as the technology continues
    to develop.”

    This sounds a lot like the anti-gunners back when the Glock came out.

  • Made_in_the_USA

    I wonder if Professor Kamal Sarabandi ever worked for the TSA. Maybe they won’t evolve into another form of body scanner. Another invasion, either way.

  • granny_forUSA

    Lets hope they don’t scan BOZO’s head. They won’t find anything then the liberals will know what we know. Nobody’s upstairs.

  • granny_forUSA

    The Nazi regime has taken over the WH.

    • matism

      And is being enabled by the Praetorian Guard, who care not for their very oath of office to the Constitution, but instead grovel before whoever signs their paycheck and then do whatever they are told.

      I vus chust doink mein chob!

  • Southies_becca

    This is just dumb. A lot of people don’t have their CCW, but drive to and from home to the range, WHEREthey practice. And you know the cops consider that concled .

  • Stealth

    Not fool-proof by ANY stretch of the imagination… If a person is carrying a’bunch’ of keys ( I have a pocketful on a large key-ring, a decent sized pocket knife and a LOT of things bigger- even a POCKET full of change… will they ASSUME that person is ‘carrying a gun?’

  • Anon

    Regarding the last sentence of the article, plastic and polymer firearms are nothing new, however you cannot print a gun barrel out of plastic, even with a $100,000 stereolithography machine and $100/liter photoresin. Furthermore, constructing your own firearm from scratch is and has always been legal, provided the firearm is intended for your own personal use and follows the National Firearms Act standards.

    To the author, shame on you for calling 3d printed weapons a security risk. You are only acting to further the false premise of fearing your fellow citizens while trusting the government to do right by you.

  • Jeff

    So… a metal detector.

  • What about polymer weapons? Bullets can have plastic casings. I’ve used them before. Polymer projectiles work, though not as good. The signature would be like a cell phone. Of course that’s is a scenario you wouldn’t run across on an everyday basis. Just another bite out of freedom.

  • PaulN

    It works in seconds!?! Then what? Remember the police officers own words; when seconds count, police are only minutes away! Sadly, this is the type of technology that will not help us but the government can see a use to make sure it helps THEM!

  • kds

    It will probably show any joint replacements and put non concealing persons at risk. What the hell is going on?