Beyond Yesterday's Constraints
Anti UAV System Overview
The national low-altitude field is gradually opening up. The number of low-altitude slow-speed small UAVs mainly in the form of multi-rotor aircraft shows an explosive growth trend. The emergence of a large number of low-altitude UAVs has brought serious public safety problems. It brings new challenges to security, security and counter-terrorism.
Some Critical Drone Attacks
On August 5, 2018, Venezuelan President Nicolas Maduro was assassinated by a drone during a National Guard event in Caracas, the capital of Venezuela.
In the Russia-Ukraine war in 2022, the Ukrainian armed forces launched a number of drone attacks and suicide attacks on oil refineries on the Russian border.
UAV interference affected the northern end of Kunming Changshui International Airport at about 16:00 on May 1, 2017, causing at least eight flights to divert.
Challenges :
Consumer level drone characteristics：
•small in size
•hard to shoot/kill
•flying slow ,while hard to detect
•payload capacity
UAV event characteristics：
•Unpredictable time of occurrence
•Unpredictable location
•Unpredictable number of drones
•Unpredictable harmfulness
All-day, all-weather, all-round, all-in-one counter-UAV solutions are needed!
All-in-one Counter-UAV System
Anti-jamming system is an integrated low-altitude defense system for detection, identification, tracking, jamming and remote monitoring.
When the UAV flies into the defense area, the effect of forced landing or returning is realized by radio interference.
Counter-UAV System -- Business Flow
Counter-UAV System -- Framework
Counter-UAV System -- Prevention Strategy
Hierarchical processing :
After detecting the UAV, detector tracks the target. If UAV continues to fly into the early warning area, an alarm will be reported, and then countermeasures will be taken to drive away or crash land the UAV
Ø Detection radius: 3-5km
Ø Warning radius: 2-4km
Ø amming radius: 3km
Ø Safe zone radius: 1km
Accurate Detection Technology
Fusion of active and passive detection
The spectrum detection equipment establishes a corresponding database between the radiation source and the UAV target according to the characteristics of the radiation source type database, and identifies the target model according to the type, power, azimuth, and frequency of the radiation source. The output target type and the active radar recognition result can be fused.
Based on radar echo observations, active radar images the target and performs feature extraction. Based on the target's range profile characteristics, motion characteristics, scattering characteristics and other characteristics, the received echo attributes were judged, and the attribute judgment and confidence of the target were output to the fusion device.
RF Detector BYC5000
Receive the electromagnetic wave signal in the defense area and analyze the signal belonging to the drone
​
★ All-in-one design
★ Detect and analyze signals
★ Support AOA and TDOA
★ Easy to deploy
Tech Specs :
Radar BYC5000R
Radar transmits electromagnetic waves and recovers them, and analyzes the changes in the recovered waveform to determine the position of the drone.
★ Target tracking guidance
★ Strong recognition ability
★ Strong adaptability
★ High positioning accuracy
Accurate Detection Technology AOA+TDOA
Time Difference of Arrival (TDOA) is a time based method for the localization of emitters. The procedure is centered on determining the time difference between the arrival of a transmitted signal at different receiving locations.
A TDOA network consists of three or more receiving stations that surround an area under observation. To obtain an unambiguous result, there must be at least three receivers and the location must be within the area covered.
The receiving stations simultaneously sample the transmitted signal over a defined time period in the form of an IQ data set. These samples are marked with a high precision timestamp and transmitted to a central computer, e.g. through a computer network. Using the positions of the measuring receivers and the time differences within the samples, the computer can calculate the position of the emitter.
AOA+TDOA+ protocol parsing technology
Precision Positioning
The function of the UAV positioning device is integrated into the spectrum detection device, which can realize the accurate positioning of the DJI series UAV and the positioning of the remote control, and also can take into account the detection and positioning of non-DJI drones (combined radar).
uIt can not only locate traditional consumer UAVs and pilots by single station direction finding, but also realize TDOA accurate positioning by multi-point deployment networking.
System Introduction
Through the arrangement of the grid,
we will obtain a detection circle and a jamming circle.
Product Introduction - Jammer
★ Large bandwidth, long distance
★ Full-band interference
★ Flexible deployment
Rich Platform Features
ØTarget location ：when the system detects the intrusion target, the electronic map interface of the background system draws a sector to mark the position of the target, and a red box is drawn in the sector area to mark the position of the intrusion target and give the distance in real time
ØTracking target switching: When there are multiple intrusion targets in the system, the default is to track the first found target, and the user can manually switch the target
ØPilot positioning: Display the position of the take-off point in the defense area. And displays the real-time positioning of the pilot for DJI UAV
Alarm reporting and linkage
ØWhen the UAV intrudes into the prevention area, the detector reports alarm information, the platform emits sound alarm and the directional jamming device is linked to lock the invasion target by turning the turntable to prepare for timely interference (if the unmanned mode is opened, the jamming device will automatically interfere with the UAV).
ØAlarm information display: alarm time, UAV azimuth, UAV reference distance and other information, and alarm information can be retrieved according to date.
ØPre-alarm information and UAV intrusion video information are saved for more than 1 year.
Black and White List Recognition
ØThe system has blacklist and whitelist function, which can compare the black and white list according to the unique identification number of the UAV
ØSelf-use UAVs can be equipped with a white list module, which will not be identified as an intrusion target during normal operation, and will not trigger system alarms
Convenient Device Management
ØPositioning acquisition: The UAV detection device of the system has a built-in high-precision GPS module. After power on, the GPS module can accept to obtain the longitude and latitude coordinates of the current position, and the electronic map on the system platform displays the position of the device.
​
ØSelf-monitoring: with complete automatic monitoring function and fault location function, real-time monitoring of the working status of each device, providing a guarantee for users to quickly recover the system.
​
ØAutomatic database construction: It can detect UAV targets in the non-UAV recognition database and add them to the recognition database to update the recognition database
