What is an anti-drone system? And how do you clip the growing threat wings from above?

As the world advances and technology evolves, the threats faced by countries like India will change. In recent years, security agencies have been using drones to smuggle weapons, explosives, ammunition and narcotics across the western border of India, and to spy and target critical facilities, especially by terrorist groups and Pakistani elements. It has repeatedly raised concerns about increased use.

Anti-drone systems are designed to counter drone technology and interfere with them in a variety of ways, and are used to detect and / or intercept unwanted drones and unmanned aerial vehicles (UAVs).

These are often deployed to protect areas such as airports, critical infrastructure, large public spaces such as stadiums, military installations, and battlefield sites.

There are different forms of anti-drone technologies and systems available today, and there are several ways to classify them. According to 911 security.com, this is one way.

Voice detection: Drones make a very special sound. There are devices that can listen to very specific frequencies emitted by rotating devices, and they work to some extent. In a calm and idyllic environment, these devices can detect approaching drones with an accuracy of up to about 500 feet. A study conducted by Korean researchers and published in January 2017 tested these devices in a real-world urban environment. When used in noisy settings, the audio detector had even more problems identifying the incoming drone.

RF technology: The drone uses radio frequencies to communicate with the operator. To keep the receiver and transmitter connected, they are paired with a specific RFID chip that prevents other devices of the same frequency from overtaking the drone.

Interferer: Interfering devices work by blowing off electromagnetic noise at the radio frequencies that the drone uses to operate and emit information. In effect, they drown out the conversation between the drone and its operator. This is usually either 2.4Ghz or 5.8Ghz, an unassigned public frequency. This prevents disturbers from interfering with manned aircraft, cell phones, public broadcasters, or other dedicated radio bands. The jammer is built into a fixed, attached device, or a highly mobile gun-like device, allowing the drone to land safely away from where it was intended.

Geo-fence: Geofence works by using a combination of GPS networks and LRFID (Local Radio Frequency Identifier) ​​connections such as Bluetooth and Wi-Fi to create a barrier that surrounds the airspace. This boundary is created using a combination of hardware and software to create a physical, invisible boundary that surrounds the airspace. Some drone makers have incorporated geo-fence technology into their aircraft to warn pilots when they enter restricted airspace such as no-fly zones, prisons, power plants, and airfields.

Video detection: Video can be used in combination with other drone detection technologies to create and relay a visual record of detected drone incidents. Video detection is not the ideal first line of defense for detecting incoming drones due to factors such as weather and seasonal changes, but it is valuable for recording drone incidents for future review. It could be a tool.

Heat detection: Thermal imaging is also not the first line of defense in drone detection, but it can be a useful tool for finding remote drone operators. Limited space, for example, the area around a power plant. If a drone is detected in the airspace, an infrared camera attached to the drone operated by power plant guards can be used to find an operator near the invading drone.

Radar detection: Drones are often small, low-flying aircraft, and it is very difficult to pick them up using radar. Radar technology is great for finding manned, large, or long-range aircraft flying in traditional airspace, but its capabilities do not detect drones well.

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