In recent years, the drone industry has experienced explosive growth. The widespread adoption of consumer drones has integrated applications like aerial photography, inspection, and emergency rescue into daily life, empowering various industries. However, the ensuing chaos of "black flying" has gradually become a "core concern" in low-altitude safety. Illegal intrusions into airport clear zones, malicious photography in military restricted areas, unauthorized disturbances at key venues, and disorderly flights during major events... These black flying incidents not only severely disrupt public order but also directly threaten aviation safety, national security, and the lives and property of the public. According to recent news reports, multiple domestic hub airports have successively faced drone black flying intrusions. Multiple drones illegally entered runway clear zones, causing widespread flight delays, diverted landings, and even cancellations, resulting in significant economic losses and negative social impacts. Faced with increasingly severe low-altitude safety challenges, drone countermeasures have become a critical tool for safeguarding aerial defenses. As a core component of the countermeasure system, drone navigation decoy devices stand out among various countermeasures due to their unique advantages of precision, efficiency, non-destructiveness, and absence of secondary hazards. Shenzhen Zhongke Jiachen Technology Co., Ltd., as a veteran manufacturer in Shenzhen, has been deeply engaged in the drone countermeasure field for years. Its independently developed SDJ-202B portable drone navigation decoy device, equipped with cutting-edge technical capabilities, provides robust protection for low-altitude safety and has become the preferred anti-drone equipment for government agencies, enterprises, security departments, and key venues.

The chaos of black flying is getting worse and worse, and low-altitude safety needs to be protected by technology

As drone manufacturing costs continue to drop and operational barriers decrease, "black flying" has become increasingly normalized, diversified, and covert, posing significant challenges to low-altitude safety management. From chaotic flights in urban commercial hubs and aerial surveillance to illegal intrusions into sensitive areas like airports, military bases, nuclear power plants, and oil depots, black flying incidents have become alarmingly frequent. A recent case at an international airport involved a civilian drone that flew into the 3-kilometer clearance zone without authorization, causing a 40-minute temporary closure, delays for over ten flights, and disruptions for hundreds of passengers, severely disrupting aviation operations. Additionally, during major sporting events, conferences, and celebrations, black flying drones' surveillance and interference activities put immense pressure on security measures, potentially leading to leaks of critical information and safety incidents.

To combat rampant illegal drone operations, conventional countermeasures primarily rely on signal suppression. However, these methods have inherent limitations: some devices emit excessive power, disrupting nearby communications and affecting daily life and public services. Moreover, signal suppression often causes physical damage to drones, increasing the risk of crashes that may injure people or damage property—creating secondary hazards. The emergence of drone navigation spoofing technology marks a breakthrough in "soft countermeasures." By spoofing satellite navigation signals, it precisely guides illegal drones to land, return, or deviate from no-fly zones without causing physical harm. This approach not only achieves effective countermeasures but also completely avoids secondary risks, making it the most practical and scenario-appropriate solution currently available.

Powered by cutting-edge technology, the SDJ-202B establishes a benchmark in countermeasure solutions.

As a Shenzhen-based manufacturer with deep industry expertise, Shenzhen Zhongke Jiachen Technology Co., Ltd. has consistently upheld its core philosophy of independent R&D and technological innovation. Focusing on iterative breakthroughs in drone countermeasure technology, the company leverages years of technical expertise and practical experience to develop the SDJ-202B portable drone navigation decoy device. Powered by two core patented technologies—the VCO-based RF signal infrastructure platform and high-power RF enhancement powerboosting technology—combined with multiple industry-leading technical specifications, this device not only stands out as a top performer in drone navigation decoy equipment but also establishes an industry benchmark for drone countermeasure devices.

This device is specifically engineered to counter various black flight scenarios, employing an advanced navigation spoofing interference mechanism. By emitting low-power (≤10dBm) regenerated navigation satellite signals, it precisely infiltrates the navigation systems of unauthorized drones, delivering two core functions: "no-fly zone projection" and "area denial." These capabilities fundamentally eliminate the threat of black flight. The no-fly zone projection function simulates false signals of restricted areas such as airports, military zones, and key venues, misleading drones into believing they have entered a prohibited zone and automatically triggering forced landing or return procedures. The area denial function utilizes customized trajectory spoofing signals to precisely divert drones from their intended routes, preventing them from entering protected areas and achieving the preventive effect of "interception before intrusion."

The SDJ-202B excels in core performance with outstanding capabilities: It provides 360-degree coverage in unobstructed environments, operating at a minimum range of 500 meters to effectively counter long-range drone interference. The system can simultaneously repel at least 10 drones of various brands and models within 10 seconds, achieving rapid detection, precise targeting, and efficient countermeasures. Its adjustable output power allows administrators to flexibly expand or contract the coverage area according to operational needs, making it adaptable for diverse scenarios, including airports, stadiums, industrial parks, and border defense. The device supports full coverage of mainstream navigation frequency bands for civilian drones and offers customizable frequency options to meet specific requirements, ensuring strong compatibility and eliminating compatibility concerns.

The device delivers exceptional practicality and environmental adaptability, breaking all scene limitations: With a power consumption of ≤75W and a built-in high-performance battery, it provides continuous power for at least 12 hours while supporting 110V-220V AC power supply, meeting both outdoor power-free scenarios and indoor routine prevention needs. The battery operates within a temperature range of-20℃ to +55℃, while the AC power supply functions between-40℃ and +70℃, effortlessly adapting to extreme conditions like high cold, high heat, and high humidity without fear of outdoor weather extremes. With a startup time of ≤3 minutes, it supports 24-hour uninterrupted operation without personnel supervision, significantly reducing labor costs. Whether for temporary security tasks or routine prevention, it handles them with ease. The compact suitcase-style design ensures lightweight portability, making on-site deployment simple and user-friendly. No professional technicians are required—ordinary staff can quickly get up and running with basic guidance.

The entire process is seamlessly adapted, making it easy for beginners to get started.

An effective anti-drone device must combine cutting-edge hardware with intuitive operation and comprehensive support systems. Shenzhen Zhongke Jiachen Technology Co., Ltd. developed the SDJ-202B by thoroughly considering real-world scenarios and operator needs. From device connectivity and field deployment to software operation, the system delivers a seamless workflow that streamlines drone countermeasures, eliminating the pain points of complex operations and learning curve.

For equipment deployment, the SDJ-202B supports both battery and external AC power supply modes. The setup is remarkably simple: After securely connecting the antenna, simply rotate the power switch to activate the LCD display showing power values, completing the setup. The antenna consists of a GPS receiver and transmitter, with the remote-controlled version additionally featuring a GSM receiver. Just follow the device's wiring instructions without complex calibration. For optimal coverage, prioritize the highest point within the defense perimeter to ensure clear radio signal transmission. Even in complex outdoor environments, the system can be quickly deployed to achieve comprehensive surveillance coverage.

The software integrates with a dedicated low-altitude drone security defense platform featuring a B/S architecture. This plug-and-play solution requires no additional software installation, requiring only decompression for immediate use. Compatible with Windows 7/10 64-bit systems and mainstream browsers including Google Chrome and 360 Max, it ensures exceptional compatibility. The platform enables comprehensive remote management: users can remotely initiate/terminate decoy missions, access real-time alert logs and defense logs, and perform mission playback with statistical analysis—all to help administrators review prevention effectiveness and optimize strategies. The control center and devices operate on the same LAN for seamless connectivity. When deployed across multiple devices, each can be assigned a unique IP address to achieve integrated low-altitude defense, significantly boosting operational efficiency. With straightforward backend configuration and intuitive client operations, even first-time users can quickly master the entire countermeasure workflow.

Furthermore, the equipment features a comprehensive troubleshooting protocol. For common issues like power failure, network connectivity problems, or failed signal transmission, it provides clear troubleshooting steps and solutions. Operators can independently resolve these issues without professional maintenance personnel, significantly reducing maintenance costs. This ensures 24/7 stable operation and uninterrupted epidemic prevention efforts.

Source manufacturers provide strong support, Zhongke Jiachen builds a low-altitude safety barrier

In the drone countermeasure sector, Shenzhen-based manufacturers provide triple guarantees of technology, quality, and service. By eliminating intermediary agents, they deliver exceptional cost-effectiveness while offering end-to-end solutions spanning R&D, production, and after-sales support. Shenzhen Zhongke Jiachen Technology Co., Ltd., a high-tech enterprise specializing in drone countermeasure equipment, has been at the forefront of technological innovation and market-driven development. With years of industry expertise, the company has developed a comprehensive product line including navigation spoofing, signal detection, and radio frequency jamming systems. These solutions are tailored for diverse scenarios such as airports, public security, border defense, nuclear facilities, large venues, and industrial parks, providing customized, professional low-altitude security defense solutions that comprehensively meet various protection requirements.

Beyond cutting-edge product technology, Zhongke Jiachen provides a comprehensive equipment maintenance and after-sales service system to ensure customer peace of mind. For the SDJ-202B drone navigation decoy device, the company has established detailed maintenance protocols, including regular upkeep such as cleaning the main unit's exterior, inspecting feeders, securing antenna connections, and waterproofing connectors, along with battery charging and discharging techniques to extend the device's lifespan. Additionally, customers receive full-spectrum technical support and repair services. In case of equipment malfunctions, remote troubleshooting is available for swift resolution. For factory repairs, the company ensures prompt and efficient handling to restore equipment functionality and minimize customer losses.

Shenzhen Zhongke Jiachen Technology Co., Ltd. delivers end-to-end solutions—from core R&D to mass production, from customized designs to comprehensive after-sales support. Leveraging its full industrial chain advantages as a Shenzhen-based manufacturer, the company ensures every drone countermeasure device delivers exceptional cost-effectiveness, stability, and adaptability. Its SDJ-202B drone navigation decoy system has been deployed across multiple Chinese provinces in security, airport operations, border defense, and nuclear power sectors. Having played a pivotal role in critical security missions and routine surveillance, this system has become a "hardcore guardian" for low-altitude airspace safety, earning widespread acclaim from clients.

Conclusion: Technology Countermeasures to Protect the Low-altitude Clear Space

The widespread adoption of drones is an inevitable outcome of technological progress, bringing significant convenience to our daily lives and work. However, the rampant unauthorized drone flights (black flying) have posed severe challenges to low-altitude airspace safety. Effective regulation of such activities not only reflects a society's governance capabilities but also represents a mutual advancement between technological development and safety requirements. As low-altitude airspace security becomes increasingly complex, innovations in drone countermeasures are crucial. Among these, drone navigation decoy devices—being green, efficient, and safe countermeasures—will undoubtedly become the core component of low-altitude security systems, providing robust support for airspace control.

As a veteran manufacturer in Shenzhen, Shenzhen Zhongke Jiachen Technology Co., Ltd. is committed to its mission of "protecting low-altitude safety and empowering security prevention." With cutting-edge technology, premium products, and comprehensive services, the company provides professional anti-drone equipment and countermeasure solutions for various industries. Moving forward, Zhongke Jiachen will continue to focus on the drone countermeasure sector, driving technological innovation and enhancing product performance. The company aims to develop more high-performance, user-friendly, and cost-effective anti-drone devices, leveraging technology to strengthen low-altitude safety barriers. This initiative will foster the healthy development of the drone industry in a regulated and secure environment, ensuring clearer and safer low-altitude airspace, and safeguarding social stability.