Anti-Jamming Receivers

An anti-jamming navigation module is a device or system that is designed to prevent interference or disruption of GNSS navigation signals, such as GPS/Galileo/GLONASS/BeiDou etc. The goal of an anti-jamming navigation module is to ensure that navigation systems, such as those used in vehicles or aircraft, continue to function accurately and reliably despite the presence of jamming signals.

There are a few different ways that anti-jamming navigation modules can be used:

• Civilian transportation: Anti-jamming technology can also be used in civilian transportation, such as in cars, trucks, buses and trains.

• Industrial and commercial applications: Anti-jamming technology can also be used in industrial and commercial applications, such as in agriculture and construction, to protect navigation systems that are used to guide equipment and machinery.

It is important to note that anti-jamming technology can take many different forms, such as software-based solutions, hardware-based solutions, or a combination of both. Different solutions may be more appropriate for different types of systems and different types of jamming signals.

Antijamming technology is used to protect wireless communications systems from intentional or unintentional interference.

Anti-jamming receivers are specialized receiver systems that are designed to detect and mitigate the effects of radio interference. They typically use a combination of techniques such as frequency filtering and spatial filtering, adaptive amplification, and direction finding to protect against jamming attempts.

Anti-jamming receivers can be integrated into existing communication systems to provide an additional layer of protection. They are used in a variety of applications, including civil aviation, vehicle tracking, emergency services, timing and other commercial and industrial applications.

Anti-jamming receivers can be designed to focus on specific frequency ranges, types of signals and environments, depending on the application. For example, in civil aviation, they may be designed to protect against unintentional interference that may disturb GPS signals.

ANTI-JAMMING DESIGN

Anti-jamming receivers also can be designed to work with other anti-jamming techniques, like beamforming, which uses array of antennas to direct the signal towards the intended receiver, making it harder for the jammer to interfere with the signal.

Overall, anti-jamming receivers are important tools for ensuring reliable communication in the presence of electronic jamming, either designful or unintentional, and are crucial for maintaining the security and integrity of communication systems.

Interference mitigation is achieved by applying proprietary digital algorithms, creating dynamic nulls to give protection against narrowband and broadband interference sources.

Together with a phased array antenna , the Anti-Jamming GNSS receiver implements the Null-Steering algorithm based on classic auto compensator architectures with equalization channels, and jamming signals are separated from the GNSS signals. The direction of GNSS signals can be determined using phased array antennas (up to 3), and more than one jamming signal can be removed.

The system provides significant jamming protection even in dynamic multi-jammer scenarios both under narrowband and broadband interferences.

Anti-jamming OEM GNSS module is designated for the navigation data (positioning, velocity, time) determination using GPS, GLONASS, Galileo, BeiDou, NavIC satellite constellations

• Three band multi constellation anti-jamming phase antenna array

• 4-element

• 4 receive channels for each frequency band

• Three band protection combined with Anti-Jamming GNSS Receiver 

• Compact enclosure system

• Easy to integrate, ideal for retrofitting

This is 4-elements Phased Array Antenna with frequency filtering at the antenna inputs and LNA on-board. The Anti-Jamming function is achieved by using it together with Anti-Jamming GNSS receiver which includes an Anti-Jamming GNSS processor. Signals acquired by Array Antenna are digitized and processed with our Receiver high dynamic range receiver after which the navigation solution is resistant to jammers.

A 4-element antenna array with Anti-Jamming GNSS receiver allow gain pattern shapes to be changed in response to interference. Provides up to 3 independent nulls.