日別アーカイブ: 2024年10月17日

As the war between Ukraine and Russia continues, the technological confrontation on the battlefield has gradually become the key to victory or defeat. The Ukrainian army has quickly achieved remarkable results with low-cost and high-efficiency drone technology. In particular, drone ground attacks have become an important means for Ukraine to deal with the Russian army.cell phone jammer Against this background, although Russia has invested a lot of resources in the development of advanced anti-drone jamming equipment, the performance of these devices in actual combat is far below expectations, and even exacerbated the losses of the Russian army.GPS jammer

Ineffective jammers: technical flaws exposed

According to the revelations of many bloggers and battlefield observers, a model used by the Russian army costs about $2,400. signal jammer Due to design flaws and improper operation, the multi-frequency jammer not only failed to effectively prevent the attack of Ukrainian drones, but also misled Russian soldiers, making them mistakenly believe that they were protected. This problem exposed the technical shortcomings of the Russian army in the actual application of advanced technology, and also provided more strike opportunities for the Ukrainian army. Wifi jammer

The main problems of this jammer are concentrated on its core design and structure. drone jammer From the orientation of the antenna to the design flaws of the cooling system, the device becomes fragile and unreliable on the battlefield. GSM jammer The designers of the jammer failed to fully consider the diversity and complexity of drones in the actual battlefield, resulting in the complete inability of the device to play a role in actual combat, and even becoming a “fatal trap” for soldiers.

Antenna direction error: unable to effectively defend against drones

The main function of the jammer is to launch drones to The radio noise interferes with the signal connection between the drone and its operator. However, this design has huge flaws in actual use. The blogger pointed out that many jammer antennas used to interfere with low-altitude drones are designed with the wrong direction. These antennas are facing upwards instead of to the side, and low-altitude drones, especially FPV drones (first-person perspective drones), often attack from the side.

FPV drones are difficult to capture by traditional radar or visual means due to their small size and high speed. Therefore, the jammer should have been designed to be more flexible to deal with drone attacks from different directions. However, these jamming devices of the Russian army can only work when the enemy drone flies directly over it, which is almost impossible on a complex battlefield. Therefore, the design of the equipment severely limits its use scenes, unable to adapt to the flexible and changeable attack modes of drones.

This antenna orientation error also means that the interference range of the device is extremely limited, making it difficult to form an effective protective barrier. Even after the enemy aircraft enters the interference range, the interference signal cannot quickly and accurately affect its communication system. The fixed design of the antenna further weakens its flexibility, making it only suitable for specific environments and unable to cope with the ever-changing attack methods on the battlefield.

Equipment overheating: cooling system design defects

In addition to the antenna problem, the cooling system design of the jammer also has fatal flaws. Radio jamming equipment generates a lot of heat when working, and usually requires an efficient cooling system to maintain the stable operation of the equipment. However, the cooling system design of this jammer is too simple and is only equipped with a small fan. The fan lacks sufficient ventilation design and can only circulate hot air in the closed plastic shell, which cannot effectively dissipate heat.

With the development of modern warfare, electronic warfare has become one of the key factors in determining victory or defeat.Wifi jammer On the Ukrainian battlefield, the Joint Direct Attack Munition Extended Range (JDAM-ER) bombs provided by the United States to Ukraine once brought strategic advantages to Kiev, but Russia quickly broke this advantage through powerful GPS jamming technology. cell phone jammer In response to this situation, the United States is introducing a more advanced seeker system to enable JDAM-ER to respond to and counter Russia’s electronic warfare jamming. GPS jammer

JDAM-ER: From traditional bombs to precision guidance

JDAM-ER is a wing kit system that upgrades traditional bombs to precision-guided weapons. GSM jammer Its core technology relies on GPS navigation, and through ballistic adjustment, the bomb can change its trajectory during flight, thereby achieving high-precision strikes.signal jammer The system is highly maneuverable and has a long range, and can strike targets as far as 45 miles (about 72 kilometers) away from the air.

The JDAM-ER bombs obtained by Ukraine have been integrated into its old Soviet-made fighters, such as Su-24 and MiG-29, and have carried out many precision strikes on Russian targets in the early stages of the war. However, the intervention of electronic warfare jamming technology has made these precision-guided bombs face unprecedented challenges in actual application.

How Russia’s electronic warfare system affects JDAM-ER

Russia has deployed multiple electronic warfare systems in the Ukrainian theater of operations, which are specifically designed to interfere with GPS signals, making it impossible for JDAM-ER to accurately target targets. Russia’s R-330Zh Zhitel device is a jamming system specifically designed to attack signals in the 1.164GHz to 1.575GHz frequency bands, which are exactly the GPS bands used by JDAM. The R-330Zh device can cover an area within a range of 30 kilometers and is capable of emitting 10 kilowatts of jamming signals.

Through this technology, Russia has effectively weakened the precision strike capability of JDAM-ER. Although the jammer does not directly cause the JDAM bomb to fail, it greatly reduces its strike effect, making it less effective on the battlefield.

The Pentagon’s response strategy: Home-on-Jam technology

In response to Russia’s electronic warfare interference, the Pentagon quickly took technical improvement measures. The Pentagon signed a contract with the Scientific Applications and Research Association (SARA) to develop a seeker system that can directly track and destroy GPS jammers. This new technology, called the “Home-on GPS Jamming Seeker”, allows JDAM-ER to have the ability to self-locate and destroy jammers, thereby eliminating the impact of Russian electronic warfare on it.

SARA began researching this technology as early as 2014 and proved its effectiveness through multiple actual combat exercises. In 2020, the U.S. Air Force conducted relevant tests on the GBU-39/B small diameter bomb, and the results showed that this technology can significantly improve the combat capability of precision-guided bombs in complex electronic warfare environments.