A safe method for detecting land mines is “mine detection using radar bullets”. KEYWORDS: Helicopter, Land Mines, Explosive detectors, Metal Detection. Mine Detection Using Radar Bullets - Free download as Word Doc .doc), PDF File .pdf), Text File .txt) or read online for free. Mine Detection Using Radar Bullets Full Seminar Report - Download as Word Doc .doc), PDF File .pdf), Text File .txt) or read online.
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Mine Detection Using Radar Bullets Seminars - Download as Text File .txt), PDF File .pdf) or read online. A NEW ERA OF TECHNOLOGY IN DEFENCE BY-ROHIT GUPTA TE MECHANICAL WHAT IS RADAR BULLET y Radar bullet is a special type. Explore Mine Detection Using Radar Bullets with Free Download of Seminar Report and PPT in PDF and DOC Format. Also Explore the.
AT mines range from about 15 to 35 cm in size. They are typically buried up to 40cm deep, AP mines range from about 5 to 15cm in size. AT mines which are designed to impede the progress of destroy vehicles and AP mines which are designed to kill and maim people.
Number of items removed during mine clearance in Cambodia, Impulse radar bullet system comprises Impulse generator, Transmitter, Receiver, Pulse extender, display.
The unique feature generator is small trailing oscillations, which are below 2. IMPULSE generator continuesIt produces monocycle as a result, the magnitude of the field radiated by an antenna system fed by a monocycle is considerably larger than the magnitude of the field radiated by the antenna system fed by a monopoles with the same magnitude. The antenna system contains transmitter and receiver. The transmit antenna should: Radiate electro magnetic energy within a narrow cone in order to filter out undesirable back scattering from surrounding objects.
The waveform of the radiated field on the surface and in the ground should be the same and should not depend on ground. The receiver antenna should: Provide sufficient sensitivity in order to receive very weak fields.
Be elevated at least 10cm above the ground surface. Processor filters the signal. This signal shows presence or absence of surrogate mine in the soil. Processor allows passing the presence of mine detecting signal. Processor selects the mine detecting signal and passes to the visual display.
The radar bullet is a special type of bullet. The main use of radar bullet is to find landmines without setting foot on the ground.
This consists of firing a special bullet in to the ground from a helicopter, which could pin point buried land mines.
The bullet units a radar pulse as it grounds to a halt. This pulse strikes the mine and its image gets available on the computer in the helicopter, offering a safe and efficient way of finding land mines. Radar is a sensor. Radar makes use of radio waves to detect and locate objects.
The purpose is to provide estimates of certain characteristics of its surroundings most commonly the presence, position and motion of aircrafts, ships and other vehicles. Radar operates by transmitting electro magnetic energy into the surroundings and detecting energy reflected by object.
If a narrow beam of this energy is transmitted by the directive antenna, the direction from which reflections come and hence the bearing of object may be estimated. The distance to the reflecting object in estimated by measuring the period between the transmission of radar pulse and reception of echo.
In radar bullet principle the change of medium by the waves must be taken into consideration. The same antenna and the time difference between the signal transmission and reception is calculated, which will help up to measure the distance of the target from the radar.
The bullet in designed in such a way that it gives out powerful blast of radio waves from under the ground.
The bullet will produce a pulse of radio waves as it pierces the ground and signal is reflected from any landmines within about a 15 meter radius will be detected by an antenna on the helicopter. Once the mines are located they can be destroyed at once or there exact position are noted so they can be destroyed at once on their exact positions are noted so that can be diploid later.
And if the bullet hits it, it would explode. The Radar pulse is generated from the bullets kinetic energy by a process known as, Magnetic flux compression.
As the bullet leaves the gun, there is a battery generating a magnetic field in the cylinder. When the bullet smashes into the ground ,the sudden deceleration forces the cylinder out from inside the coil. The sudden movement of the metal cylinder through the magnetic field induces a large pulse of current in the coil. The coil thus acts like an antenna converting the pulse into a short burst of high frequency radiation.
Using the same experiment set up, the radar bullet as able to detect 35 cm anti tank mines and Val Mara 69 anti personal mines, which are a particular problem in northern Iraq, where the mines have been laid by Saddam Husseins forces in their confrontation with the Kurds. Extremely small bullets can be used for detection A 30 mm bullet gives out a 4 kW radar pulse.
Also since the bullet is beneath the surface of the ground, it transmits more radio wave into the ground. Almost 10 times move power than a standard ground penetrating radar from 20cm down. For ordinary penetrating radar, little radiation penetrates the soil, most is reflected by the ground because of the sudden change in density between the air and the soil. Here the radiation has to change the medium twice. First from air to ground, and then after reflection, from ground into air.
Therefore weak signals are obtained.
But in radar bullet principle the radiation has to change the medium only once i. Since the equipment is to be mounted on a helicopter, the cost of operation is higher. Also during wartime mines implanted by our enemy countries are to be detected and diffused properly in order to save the lives of our soldiers.
So we should say that detecting landmines is important for every country today.
Unfortunately India, Pakistan, Srilanka, Myanmar are in the list of less mine affected countries besides other countries. The purpose of a landmine is to disable, immobilize or kill. It is an explosive device activated either by a person or vehicle or by command detonated by electric wire or radio signals.
Most land mines are laid on just below the surface of ground and are activated by pressure or trip-wire. Usually most of the land mines will contain many metallic parts, which can be made use of in their detection. Anti-personal mines claims 70 new victims every day. This weapon is particularly cruel on children whose bodies being smaller and closer to the blast are more likely to sustain serious injury.
The severe disabilities and psychological traumas that follow the blast- means these children will have to be looked after for many years. A child injured at the age of 10 will need about 25 critical limbs during there life time. This cost in Dollars a huge sum to pay in countries where people earn as little as 10 dollar a month.