Drone Anti-Jamming Techniques & Solutions

Aircraft countermeasure device that prevents unauthorized aircraft from entering a controlled area while minimizing interference with nearby wireless communications. The device includes an antenna component that sends an interference signal to target aircraft, and a main control component that controls the antenna component. The device can be installed on a fixing member for secure mounting.

Source

A compact handheld jamming device for disrupting unmanned aircraft systems (UAS) that employs a stacked multiband antenna arrangement. The device features a reflector plate with a plurality of antennas mounted thereon, each tuned to transmit at a different centre frequency. The antennas are arranged in a specific configuration where lower-frequency antennas are positioned between higher-frequency antennas, enabling effective multiband jamming while maintaining a compact form factor.

Source

Handheld device to jam UAV communications in restricted airspaces. The device has an antenna, jammer, display, and computing component. It determines if a UAV is in the area, calculates range to jam, monitors distance, and when close, jams the UAV. The display shows distance, maps, and overlays. The device can coordinate with other systems like UAV trackers.

Source

A method and system for managing low-altitude drone safety using integrated communication and interference base stations. The system enables real-time monitoring and control of drones through cellular network coverage, while also providing directional interference capabilities to prevent unauthorized drone operations. Authorized drones transmit flight data through the network, while unauthorized drones are detected and disrupted through interference signals. The system integrates communication and perception functions, enabling simultaneous coverage and interference management.

Source

A method and device for countering drones that generates an interference signal covering all frequency hopping channels used by the drone for communication with its remote control terminal. The interference signal is generated based on the frequency bands of the hopping channels, ensuring that the drone's communication signals are disrupted regardless of the channel it uses.

Source

Reducing detectability of wireless communications by using retransmission techniques to chain signals through attritable unmanned vehicles. This involves deploying retrans vehicles like drones with powerful transmitters to relay signals between low-power emitters and recipients. This hides the originating device's location and reduces its signature compared to direct transmission. The retrans vehicles can be cached, launched on demand, or preprogrammed routes. They can also spoof enemy radars to further obscure their position. The emitters can calibrate signals for specific retrans vehicles based on known locations and capabilities.

Source

A tamper-resistant datalink communications system for drones that detects and prevents unauthorized interference and hacking. The system uses a ground-based module and a remote-mounted module, each with multiple transmitters and receivers operating at different frequencies, to verify signal integrity and authenticity. The ground module converts and duplicates signals, while the remote module compares and restores the original signal, enabling secure control of drone actuators.

Source

Drone defense system that can take over control of hostile drones without physically intercepting them. The system uses sensors to detect drones and their remote controls. When a drone is detected, the defense system sends signals to disconnect the remote control and take over drone control. This can be done by sending commands to change control channels or by reading telemetry data. The defense system can also align cameras to the detected drone position and capture images for verification. The goal is to safely take over hostile drones without putting bystanders at risk.

Source

Reducing drone attacks by limiting malicious non-drone communications. The method restricts non-drone services to drone operations and controls drone operations to prevent malicious communications from compromising drone resources. It achieves this by dynamically regulating drone and non-drone sessions, with specific restrictions for drone communications and control plane operations. The approach prevents malicious non-drone communications from disrupting drone operations while preserving drone resources.

Source

A method and apparatus for neutralizing controlled reception pattern antennas (CRPA) in unmanned aerial vehicles (UAVs) using fewer interference signal sources than the conventional degree of freedom (DOF) condition. The method employs passive propagation mirrors to extend the response area of the interference signals, enabling neutralization of CRPA-equipped UAVs with fewer high-power RF transmitters than the DOF condition. The apparatus includes an interference signal generator and a passive propagation mirror, which can be distributed across multiple locations to neutralize CRPA-equipped UAVs.

Source

A controller for a counter measure system against unmanned aerial vehicles (UAVs) that enables effective management of multiple counter measure effectors. The controller determines the field of effect of each effector based on position and orientation data, correlates this with environmental data, and provides a display of the affected area. The controller also enables automatic frequency setting of the effectors to match the target UAV's communication frequency.

Source

Apparatus and method for blocking navigation satellite signals to illegal unmanned aerial vehicles (UAVs) equipped with multi-element array antennas. The system uses distributed radio interference sources that selectively activate at positions symmetrical to navigation satellites, inducing symmetrical interference that prevents the UAV from receiving navigation signals. The system tracks the UAV's location and flight trajectory to optimize interference source activation and maximize navigation signal degradation.

Source

System for detecting, tracking, and managing unmanned aerial vehicles (UAVs) using a network of sensors and portable countermeasure devices. The system employs video, audio, Wi-Fi, and RF sensors to detect and identify UAVs, and a central processing unit to analyze sensor data and determine UAV locations. When a UAV is detected, the system transmits location information to nearby portable countermeasure devices, which can then generate and transmit disruptive signals to deter the UAV. The system also enables real-time tracking and monitoring of UAVs, and can store information on known UAVs to improve detection and management capabilities.

Source

An airborne electromagnetic wave device, anti-interference system, and method for resisting interference in aeronautical satellite communication systems. The device includes an electrically tunable filter on its transmission channel, controlled by a baseband processor to increase attenuation of signals within an identified interfered band. The system comprises two airborne devices and a controller that calculates the interfered band based on the operating frequency and bandwidth of the interfering device, and triggers the interfered device to control its electrically tunable filter to filter out signals within the interfered band.

Source

Detecting unmanned aerial vehicles (UAVs) using frequency spectrum analysis of wireless network traffic. The method involves capturing network packets over a wireless transmission, analyzing the time intervals between packet arrivals using Fourier transforms, and looking for peaks indicating constant-rate traffic patterns that are characteristic of UAV datagrams. This allows identifying UAV communications among the network traffic without needing to intercept or decrypt the packets. The analysis can be further refined by filtering, sorting, and direction finding techniques.

Source

Method for disrupting operation of an unmanned aerial vehicle (UAV) by remotely controlling its flight parameters, communication protocols, and system functions, including altering flight paths, disabling stealth modes, interrupting communication with the remote controller, and modifying system settings, without physical intervention or collateral damage.

Source

A jamming system with multiple synchronized responsive jammers that operate in coordinated detection and jamming phases to effectively cover a large area, preventing mutual interference between jammers. Each jammer comprises a detector, exciter, and state machine that defines its operational phases, with the state machines synchronized to ensure coordinated operation. The system ensures that detection and jamming phases do not overlap between jammers, with a guard time between phases to prevent direct switching.

Source

A method and device for detecting illegal unmanned aerial vehicles (UAVs) using a radio wave wall. The method involves generating a radio wave wall between multiple reconnaissance UAVs using wireless signals transmitted and received between them, and detecting an illegal UAV by analyzing the radio signal strengths received from the reconnaissance UAVs. The device includes a processor configured to execute instructions for generating the radio wave wall and determining UAV presence based on signal strengths.

Source

Jamming an OFDM-operated unmanned aerial vehicle (UAV) that operates in restricted airspace by selectively interfering with its communication signals. The method involves generating a delayed version of the UAV's OFDM signal, which is then transmitted through the same frequency band. This interference causes the UAV to lose its intended communication link, preventing unauthorized operation in restricted areas.

Source

A jamming signal generating apparatus and method for measuring signal strength of a jamming signal during jamming, enabling continuous electronic attack while estimating the jamming-to-signal ratio (JSR). The apparatus comprises a signal analyzer, RF source, frequency up converter, jamming transmission signal measurement device, and transmission controller. The method involves measuring and analyzing radar reception signals, receiving jamming and video signals, measuring jamming signal strength, and calculating JSR.

Source