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High power microwave for knocking out programmable suicide drones

100%

Chaari M. Z.

Security and Defence Quarterly

2021

tom Vol. 34, No. 2

68--84

The primary research objective is to reduce the dangers of rogue drones in our lives and the consequences of extremist groups, drug dealers, and organised criminals using them. The growing number of incidents involving modified drones proves the weakness of existing technology in stopping and neutralising errant drones such as the hand-held gun jammer, trained eagle, R.F. jammer, and others. This technology is not very likely to able to knock out a rogue drone and is incapable of stopping programmable drones. This article aims to examine the directed energy of HPM (high power microwaves) in using the electromagnetic field strength energy to damage the drone’s structure or burn its PCB board electronics. It goes on to analyse electronic attack using microwave power with high frequency to immediately switch off drones. The effectiveness of high microwave power for disrupting drones at different distances and in different weather conditions is evaluated. A study of the conical horn antenna of the magnetron coupling system, which has an operating frequency of 2.45 GHz, is also included.

Testing the efficiency of laser technology to destroy the rogue drones

63%

Chaari M. Z. , Al-Maadeed S.

Security and Defence Quarterly

2020

tom Vol. 32, No. 5

31--38

A large body of research shows the increasing numbers of drones attacks despite RF jammer systems and other technologies. This incredible increase in drone attacks means that the existing solutions are not enough to stop it. The objective of the article is to present a study on the combination of a laser beam with an optical focusing system to create a new cannon to crush rogue drones. The experimental method relies on an innovative design incorporating a laser module and groups of optical lenses to focus the power in one point to carbonize any target. Specifically, it is the laser with an adjustable lens position from 477mm to 617mm to focus the laser beam on the desired distant object. We measured the necessary time to burnt acrylic plastic, wood, and hard carton from a distance of 55 metres. It was noticed that the laser efficiency is proportional to the laser power and time the cannon is turned on. Tests on the laser cannon revealed that laser burner technology can destroy illegal drones. However, it was found that the laser is affected by adverse weather conditions, such as fog, rain, and clouds. Apart from that, the frailty of this technique is connected with the stabilizing system requirements, energy, overheating, and the time needed to destroy an object. Regardless of the drawbacks of the technique, the laser is the only solution with high efficiency that can ruin or intercept autonomously programmed drones, as this cannot be achieved by the RF jammer or any other solutions. The procedure can be repeated with new changeables to achieve a postive result, specifically, the use CO2 laser tube with a high-efficiency chiller to increase the laser power.

High power wireless power transfer for the future of the battlefield challenges

51%

Chaari M. Z. , Al-Rahimi R. , Aghzout O.

Security and Defence Quarterly

2022

tom Vol. 40, No. 4

9--26

A significant challenge for the military lab is to reduce the weight of a combatant’s battery on the battlefield. Soldiers use electronic devices powered by wearable batteries in landings, operational combat with the enemy, and defensive exercises. Soldiers should always fully charge their wearable batteries before carrying them. The average weight of the battery is approximately 20 kilograms. During military operations, fighters have numerous electronic devices, such as night-vision goggles, headphones, LMR, navigation systems, VHF radios, and sensors. There is a high probability that fighters will lose their lives if the battery they take is uncharged or empty. Many research studies have tried to increase fighting time and maintain soldier life and links based on these devices. In this work, a wireless power transmission system with an RF microwave station and RF/DC converter circuit incorporated into a bulletproof vest will be designed. This system can harvest RF microwave energy to recharge or energize the wearable battery during a military operation. The challenge here is to develop a compact device that can capture the maximum RF strength to charge batteries carried by soldiers. The proposed device therefore considers all parameters to provide sufficient energy to power a computer at 13 watts. The strength of the RF power varies with the distance between the microwave power station Pin = 100 W and the receiver circuit.