SC02 is an upgraded version of SC01, which implements precise countermeasures against drones within 1000 meters. Multi-band electromagnetic emission, ready to use, cuts off the remote control, image transmission, and navigation links of the drone at a long distance, thereby forcing the drone to l...
The long-distance detection and defense integrated equipment ZD02 is a product developed for large areas. The detection distance is up to 10km. The equipment is modularized in management and easy to operate. It can be quickly assembled and deployed according to the actual situation. It can work a...
The No-fly zone device is mainly aimed at GPS/GLONASS/BD navigation systems, launching false satellite navigation signals to form a no-fly zone function, and drones cannot fly into the no-fly zone. The device has low radiation power, has no effect on the surrounding electromagnetic environment, a...
The system are using a combination of day light TV and thermal infrared image sensor, steady continuous monitoring and tracking targeted drones.
he Passive RF Detection system analyzes and identifies the remote control signal and data return signal of drones, detectes target and early warning
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Passive spectrum analysis detection technology
Passive spectrum detection, as the name implies, is that the detection device itself does not emit electromagnetic signals, but only accepts signals from airborne "low, slow, small" drones. There are also two technical solutions for spectrum detection technology: one is to detect the radiation spectrum of the drone, and we call it "radiation spectrum detection technology"; the other is to detect the drone for other signals ( For example, the city ’s digital television signals) reflect or scatter signals, which we call "scatter spectrum detection technology."
First, we discuss radiation spectrum detection techniques. Drones are controlled by ground personnel and will definitely emit wireless signals. Then, after the detection device receives these signals, it analyzes the radio signals of these devices and compares these signals with the pre-stored signals in the background database. If this signal matches the characteristics of a certain drone model in the database , Confirm that this signal is a certain type of drone. Then, the background computer notifies the jammer to cast interference, so as to achieve countermeasures. There are several problems with the passive radiation spectrum detection technology..
1) The various unmanned aerial vehicle wireless data link signals on the market must be sampled and stored in advance. For models not in the database, omissions will occur. For example, DJI's drones currently occupy a large share of the market, and their signal characteristics are also clear, and generally there will be no problems. However, for some criminals' self-propelled machines (such as Venezuelan drone bombs), you cannot know his data link characteristics in advance, and there is nothing he can do.
2) The sensitivity of spectrum detection equipment is generally high. The multipath effect caused by the reflection of the drone's radiation through the building will affect the accuracy of the number of targets and coordinates.
3) The spectrum detection system must set up multiple receiving points (more than 3) to accurately detect the distance and orientation of the target.
4) Since most of the frequency bands used by consumer drones are ISM (industrial, scientific and medical) free frequency bands, various communication devices such as mobile phones in the society also use such frequency bands. In this way, there are more opportunities for misjudgment.