LNG receiving station drone defense

1. Background of the plan

In recent years, there have been frequent incidents of drone "black flying", posing a serious threat to the safety of related LNG receiving stations. The LNG receiving station is a first level anti-terrorism prevention target unit. According to the "Security and Anti Terrorism Prevention Requirements for Petrochemical Systems" (GA 1551.3-2019) issued by the Ministry of Public Security on March 28, 2019, it is necessary to establish an active defense system against unmanned aerial vehicles. By adopting drone detection and drone navigation deception technology, an overall low altitude defense system is established to enhance the ability of LNG receiving stations to detect, prevent, and dispose of low altitude drones, in order to ensure the safety of low altitude airspace in sensitive areas.

LNG receiving station drone defense - GuanDun Technology - a leading provider of low altitude safety system solutions in China

2. Technical solution

This plan provides 24-hour protection coverage for the central area of the LNG receiving station and important locations around the LNG receiving station through the anti drone active defense system. The radius of the protection airspace is based on the system center, with a circular area of 2km for detection and 1.5km for countermeasures. It supports distributed deployment and unlimited expansion of the protection area.

2.2 Technical Proposal
The active defense system against unmanned aerial vehicles consists of fixed passive detection equipment, fixed omnidirectional navigation deception equipment, etc. The entire system data is transmitted to the command through fiber optics and 4G communication network. The system has manual and automatic operation functions:
In automatic operation mode, passive detection devices detect and identify drone signals, and automatically suppress and deceive GNSS (navigation signals); In manual operation mode, the satellite navigation deception device can be manually selected to turn on and off through remote control by management personnel, and the deception distance, deception mode, and deception direction (Yuxing series) can be set.
The main components of the system are as follows:

Radio detection equipment

Supported frequency bands: 2.4G, 5.8G
Reconnaissance distance: 3km
Reconnaissance sensitivity: better than -95dBm (25kHz)
Reconnaissance airspace: 360 ° full airspace
Protection level: IP66
Working temperature: -40 ℃ to+70 ℃
Size: 32cm × 24cm × 15cm
Note: There are versions of devices with detection distances of 5km and 9km, which support distributed networking.
Unmanned aerial vehicle navigation deception device

Effective operating distance: not less than 900m;
Signal transmission power: not greater than 10dBm;
Navigation modes that support deception (frequency range): GPS L1, GLONASS L1, Beidou B1 (optional);
Continuous working time: 24 hours a day;
Strategic support: no fly zones, area denial
Signal effective time: 3s
Signal intrusion time: 20s
Note: Supports distributed networking.
Drone Defense System Server and Software

Server, monitor, supporting control software, etc
3. System functions:

Effectively detecting drones;
Not actively transmitting signals to avoid radio frequency pollution to the surrounding environment;
Can simultaneously detect and defend multiple drones;
Capable of identifying mainstream drone manufacturers and models, and recording drone identification codes;
Support black and white lists, our own drones can fly normally;
Effective tracking and identification of drones
The system has intelligent detection and automatic strike function, which can achieve unmanned operation;
Avoid prolonged use of high-power interference suppression to avoid affecting other electronic devices;
The system equipment is easy to install, operate, and maintain.