GNSS Antennas

GAJT-410MS

Anti-Jam Technology for Space-Constrained Civilian and Military Marine Applications

The GAJT-410MS protects your crew, vessel and cargo from interference, jamming and spoofing through dynamic protection on M-Code signals as well as GPS L1/L2, Galileo E1, QZSS L1/L2 and SBAS L1. GAJT uses an adaptive digital null-forming algorithm to identify interference and jamming signals, adjusting its gain on reliable satellite signals to maintain your PNT. Its direction-finding capabilities enable you to identify and locate the source of jamming signals and optimize situation awareness.

NovAtel

Calgary, CA

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Description

Whether the interference is malicious or benign, Cyber Electromagnetic Activities (CEMA) put the vessel, crew and cargo at risk. For nearshore vessels, continuous positioning, navigation and timing (PNT) are necessary for safe operations in crowded waterways and RF environments. Commercial vessels may drift off-course without assured PNT and run the risk of shipping delays or navigation into unsafe waters. Naval vessels in contested waters need GPS L1 and M-Code protection. Designed specifically for rapid integration into space-constrained vessels, this easy-to-use system protects GPS-based navigation and precise timing receivers, including M-Code, from both intentional jamming and accidental interference.

How it works

GAJT mitigates interference and jamming by creating nulls in the antenna gain pattern in the direction of jammers. This process enables advanced anti-jam protection even in dynamic multi-jam scenarios. Whether intentional or unintentional interference, GAJT identifies and mitigates the threat to your PNT.

Features

Simultaneous GPS L1/L2, Galileo E1, QZSS L1/L2 and SBAS L1 protection operating with civil and military GPS receivers including M-Code
Commercial off-the-shelf and non-ITAR for rapid deployment through our lean supply chain
Low size, weight and power (SWaP) enclosure in a marine-hardened shell for size-constrained vessels in harsh marine environments
Up to 40 dB of interference suppression with adaptive digital nulling
Jammer direction-finding capabilities to identify and locate source of jamming and spoofing attacks

Benefits

High performance PNT protection against RF interference as well as jamming and spoofing attacks
Easy to integrate into new and existing fleets with legacy and modern GPS receiver compatibility
Enhanced situation awareness through jammer identification and direction-finding
Demonstrates high performance anti-jam protection in dynamic multi-jammer scenarios

Learn more about the GAJT-410MS anti-jam technology.

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Specifications

Power: Min. operating power [V]

10

Max. operating power [V]

32

Typical consumption [W]

18

Connection/cable for power

Combined data and power cable

Operational: Design keywords

Anti-Jam, Rugged

Amplifier: Amplifier

Tracked signals: Tracked satellite signals

GPS, Galileo, SBAS

Type of GPS measurements

L1, L2

Type of GLONASS measurements

Type of Galileo measurements

E1

Type of Beidou measurements

Type of SBAS measurements

QZSS

Signal gain [dB]

12

Environment: Operating temperature: min. [°C]

-40

Operating temperature: max. [°C]

71

Max operational altitude [m]

4570

Humidity resistance

MIL-STD-810G(CH1) 507.6, Proc. II