Resilient GNSS and Anti-Jamming Solutions

In today’s increasingly contested electromagnetic environment, the need for GNSS resilience and anti-jamming capabilities has never been more critical. Military and civilian systems alike depend on reliable positioning, navigation, and timing (PNT) data, but GNSS signals are inherently weak and vulnerable to intentional jamming, spoofing, and interference. These threats can degrade mission effectiveness, compromise safety, and disrupt critical infrastructure. 

To ensure uninterrupted operations in denied or degraded environments, robust solutions such as controlled reception pattern antennas (CRPAs), signal authentication, and multi-layered mitigation strategies are essential. Enhancing GNSS resilience safeguards strategic advantage, operational readiness, and national security.

Engineered in North America for Mission Success

Engineered and built in Canada, Calian GNSS antennas carry forward the legacy of Tallysman, a trusted name in high-precision GNSS technology. With design and manufacturing rooted in our Ottawa facility, we continue to uphold a tradition of excellence in developing robust, high-performance antennas for mission-critical applications. Our RF and System Development Engineering teams—drawing on decades of expertise in GNSS, RF design, and signal integrity—craft solutions that meet the demands of  maritime, aerospace, and industrial clients. Every antenna is designed, tested, and built in Canada, ensuring quality control and supply chain security. This commitment to in-house development and North American manufacturing reinforces Calian’s role as a dependable partner in precision GNSS.

The Future of Anti-jamming Technology is Mission-ready.

Calian’s new CRPA product line sets a new benchmark in low SWaP GNSS resilience. Purpose-built for critical infrastructure and defence applications, this advanced system delivers real-time interference mitigation and resilient PNT in the most challenging RF environments. Engineered for mission readiness—anywhere, anytime.

Designed for Your Mission Environment

Calian’s CRPA line is engineered for reliability and precision across diverse mission environments, where optimized SWaP is critical. The CR7712EXF 2–element single null adaptive beamforming antenna, is excellent for military navigation in contested GNSS-denied zones, ensuring continuous, and accurate PNT.

Calian’s CR8894SXF+ CRPA supports GPS L1/L2 (M-Code and Galileo E1/E5b signals. The CR8894SXF+ houses 4 antenna elements enabling it to mitigate 3 jammers per band for a total of 6. A serial interface provides proprietary NMEA messages that indicate the antenna’s state information as well as indicating the estimated direction to the jamming or interference source. The CR8894SXF+ is compatible with all GNSS receivers that output 150 mA or more at 5 volts to the antenna. The antenna can also be powered through the serial interface.

The CR8894SDXF+ detector only provides interference or jammer threat identification. Through a serial interface the CR8894SDXF+ provides messages indicating the CRPA state and the direction to the jammer, providing  the user with situational awareness.

To support a federated system CRPA installation, Calian GNSS provides the CA8894SXF+ (active) and CA8894SP (Passive) CRPA antenna arrays.

Complementing CRPA, Calian’s Fixed Reception Pattern Antennas (FRPAs), such as the triple-band (L1/L2/L5, E1/E5A/E5B/E6, G1/G2/G3, B1/B2/B2a/B2b/B3)  AJ977XF+, and the single-band (L1, E1, G1, B1) TW3742AJ  are optimized to mitigate low-angle interference and ideal for timing and all resilient applications.

Together, these products deliver tailored, mission-ready solutions tested for environmental, mechanical, and electromagnetic extremes for a spectrum of applications—enhancing system resilience and situational awareness wherever your mission takes you.