China Beidu Aerospace Limited presents its anti-jamming technology for Global Navigation Satellite Systems (GNSS). The company, based in Nanjing, has developed solutions that protect drones, autonomous vehicles, and aircraft from intentional signal interference. Their technology utilizes specialized antenna designs and innovative algorithms to distinguish and process authentic satellite signals while rejecting jamming attempts. This approach ensures continuous and reliable positioning, navigation, and timing (PNT) data for critical applications. http://www.njbdhk.com/
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The core of the system is a combination of a specially designed multi-element antenna and smart algorithms. For drones, the company offers a compact module that replaces the standard GNSS antenna. This module, weighing under 100 grams, connects directly to the flight control unit. The antenna’s unique structure, featuring multiple reception areas, is key to its ability to nullify interference. The system is compatible with all major GNSS constellations, including BeiDou, GPS, GLONASS, and Galileo, providing a comprehensive multi-constellation, multi-frequency defense.
One of the primary applications is for unmanned aerial vehicles (UAVs), which are particularly vulnerable to jamming. The transcript references an incident at a drone show in Vietnam where jamming caused drones to crash. The company’s hardware provides a robust countermeasure, ensuring that drones maintain control and operational integrity even in hostile electronic environments. The added weight of the antenna is minimal, resulting in a negligible impact on flight time, estimated at around a three-minute reduction for a typical drone.
The technology is not limited to small drones. Larger antenna units are designed for manned aircraft, such as jets, enabling long-range flights through potentially contested airspace without loss of navigation. Other applications include autonomous ground vehicles like cleaning robots and future self-driving cars. The company has already deployed its technology in over 2,000 cleaning machines in the Yangtze River Delta region. The system is designed to be un-hackable as it is a receive-only device, preventing intrusion through communication channels.
China Beidu Aerospace Limited positions itself as a commercial alternative to military-grade anti-jamming systems, which are often expensive and restricted. While competitors from the United States and Israel exist, their products are typically limited to military clients. The company aims to make this technology more accessible for civilian and commercial use. Although currently a start-up and not yet in large-scale mass production, they plan to increase quantity in the future. This demonstration took place at the Hong Kong Fairs April 2026.
