IAI Introduces High-Tech Jam-Resistant GNSS System for Contested Airspace

IAI Introduces High-Tech Jam-Resistant GNSS System for Contested Airspace

In a significant advancement for aerial platform navigation, Israel Aerospace Industries (IAI) has announced the launch of its new compact, jam-resistant Global Navigation Satellite System (GNSS). This development promises enhanced reliability and accuracy for aerial vehicles operating in contested environments, where traditional GNSS signals are often subject to interference and jamming.

Background on GNSS Jamming

Global Navigation Satellite Systems (GNSS), which include the widely known Global Positioning System (GPS), are critical for a wide range of applications, from civilian navigation to military operations. These systems rely on signals transmitted from satellites to receivers on the ground, which use the signals to determine precise locations. However, these signals are relatively weak and can be easily disrupted by jamming or spoofing.

Jamming occurs when a device transmits signals on the same frequency as the GNSS signals, overwhelming the receiver and preventing it from accurately determining its position. This can lead to significant disruptions, particularly in military and aviation contexts, where precise location information is crucial. Notably, a lot of US-delivered satellite-guided missiles, such as the Joint Direct Attack Munition, have been proven ineffective in the ongoing Ukraine war due to Russian anti-GPS jamming.

Recent Instances of GNSS/GPS Jamming

The Middle East has seen numerous instances of GNSS jamming in recent years, particularly in conflict zones and areas of high geopolitical tension. For example, in Syria, military and civilian aircraft have experienced GNSS signal disruptions attributed to jamming devices deployed by various state and non-state actors. These disruptions have posed serious aviation safety risks and complicated military operations.

In 2023, a significant increase in GNSS jamming incidents was reported in northern Syria, affecting both military operations and humanitarian flights. This was attributed to the sophisticated jamming equipment various factions use within the conflict zone.

Similarly, in 2024, reports emerged of extensive GPS jamming affecting military drones and commercial aircraft operating over Yemen. This highlighted the persistent and growing use of electronic warfare tactics in the region, where controlling the electromagnetic spectrum can be as critical as traditional kinetic operations.

In another instance, during the 2020 Nagorno-Karabakh conflict, reports emerged of extensive GPS jamming affecting not only military drones but also civilian aviation in the surrounding regions.

Moreover, the strategic waterways of the Persian Gulf have also witnessed GPS jamming incidents, affecting commercial shipping and raising concerns over maritime safety. Such incidents underscore the vulnerability of GNSS systems in regions with high geopolitical tensions and the need for robust, jam-resistant GNSS solutions.

IAI’s Compact ADA Jam-Resistant GNSS System

Responding to these challenges, IAI’s new jam-resistant GNSS system incorporates advanced anti-jamming technologies designed to ensure reliable signal reception even in highly contested environments. The system is compact and lightweight, making it suitable for a wide range of aerial platforms, from unmanned aerial vehicles (UAVs) to manned aircraft. It weighs 1.1 kilograms (2.4 pounds), has a size of less than 110 by 140 millimetres (4 by 5.5 inches), and consumes less than 25 watts of power. The compact ADA integrates antenna electronics and a multi-elements antenna array in a reduced size, weight, and power solution.

“This operationally proven jam-resistant GNSS system will ensure the availability of GPS- and GNSS-based systems, even in the most contested, EW-saturated battle space,” said an IAI spokesperson. “Considering the operational challenges, this jam-resistant GNSS system has considerable export potential for many air forces and armies who experience GNSS jamming in combat zones.”

The jam-resistant GNSS system employs a combination of directional antennas, signal processing algorithms, and real-time adaptive filtering to mitigate the effects of jamming. This allows the GNSS receiver to distinguish genuine satellite signals from interference, ensuring accurate positioning data is available to the platform’s navigation systems.


As GNSS jamming continues to pose significant challenges, particularly in regions like the Middle East, innovations such as IAI’s jam-resistant GNSS system are crucial for ensuring the reliability and safety of aerial operations. This development not only enhances the operational capabilities of military and civilian aerial platforms but also represents a significant step forward in the broader field of electronic warfare and navigation technology.

Source: Defence Industry Europe

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