Land battle and IT (5) detection of land mines and IEDs are also high -tech

This time, I will take a little sober place, about mine and IED detection.Although it is a plain theme, it is a troublesome person who has caused many casualties as described later, and it is difficult to detect it.In the U.S. Army, there was something good that the sixth sense was useless.

What is IED?

IED is an abbreviation of "IMPROVISED EXPLOSIVE DEVICE", which is a "immediate explosion" in Japanese.In other words, it is an explosive created by combining a mixed shell and bombs with a detonator, and is remotely detonated with a wired or mobile phone.

In addition, there are VBied (Vehicle-Borne IED), which is loaded with explosives and detonator to the goal, but it does not hide the existence of it, but it does not hide its existence.This time, I will remove it from the target because it rushes in in a visible form.

In general, IED is installed so that it is difficult to find.It is buried underground, hidden in grass and planting, or hidden in the garbage when it is a street corner.In addition, if you set up a lines on the door of the building, open the door and enter inside, it may be a form of Dokkan!

Anyway, IED is considered a serious threat, as he does not know when and how it will attack, and only the explosive power is often great.In Iraq and Afghanistan, IED has the largest deaths of the U.S. Army and other volunteers and other countries.

So, various methods were thought of how to deal with the IED.For example, if it is a method that remotely detonated by wireless, it is a plan to interfere with the radio wave.It is a so -called IED jammer, but in order to work effectively, the frequency of radio waves used for remote detonation of IED must be known.In the first place, it cannot be interfered unless it is a radio remote detonation.

There is also a "detection by sensor", which is the main subject this time.There is a way to send a robot with a camera or an arm, but apart from that, it can not detect the existence of IED from afar.

IED detection sensor

For land mines and IEDs buried in the ground, the first thing that comes to mind is a metal detector.This method is effective because it is difficult to eliminate metal products unlike land mines, because it is difficult to eliminate metal products unlike land mines.However, the risk is high because a person with a metal detector must go to the site.

That's where the ground penetration radar (GPR: Ground Penetrating Radar) appeared.As you read, the radio waves penetrate the radio waves to the ground (although there are restrictions on the detection depth) and the reflective wave is filled with land mines and IEDs.Check out if or not.An application example is a forest penetration radar.

GPRs generally use a fairly high frequency radio wave, which is more resolution, but the detection distance is shorter.However, because it is not a wide -area anti -aircraft monitoring radar, the short detection distance is not a big problem.

Because you can detect things buried in the ground with a radar, there is a possibility that the radar can be detected by the IED placed on the ground, or the IED that is covered by planting or garbage.However, since all things that reflect the radar radio waves are not necessarily IED, it is an important task to eliminate misgate (False Alarm).

Then, when the real IED is detected and when other things are detected, the reflection is different, and the data must be actually detected in various radar and the data must be accumulated.Moreover, it is necessary to quickly distribute the latest data to the front line.When this happens, it becomes a topic like an IT industry.

There is also a method of examining the shape exposed to the surface to check whether it is a real IED.IED often remodel bombs and shells, so if you judge that it is a "object like that," you give an alarm.The IED detection equipment studied by the Ministry of Defense's Technical Research Headquarters uses a laser to scan the front and accumulate information on the reflected wave to grasp the shape of the target.

It should be noted, however, that the means of grasping the shape alone will not be an IED detection.It is necessary to match the shape of the detected butt with the data on hand to determine whether it is an IED or another.Moreover, the size and direction are not constant, so if you do not accumulate data from various directions in various directions, you will not be able to judge in the first place.And it is the same as a radar that needs to update the data.

The processing speed is also important.It takes time to operate, or if it takes time to compare the obtained data with your data, the effectiveness will be reduced.It is also necessary to process as soon as possible.Then, it is about how to design a database and how to search and compare algorithms.The skills of software developers are questioned.

However, if technology develops in this way, the enemy uses his head to make a backing, making it a pretend.So, like the U.S. Army, there are cases where you start researching "sixth senses" seriously.