Anti-Jam GPS DACU (4-Channel)

Chelton's 4-Channel Anti-Jam GPS system provides significant immunity to jamming compared with a conventional GPS antenna, allowing the platform to operate up to 100 times closer to the jammer and maintain reception.

Fully M-Code compliant
Excision narrow-band interference protection
STAP Nulling broad-band interference protection
Compact and lightweight
4 channels
Low latency of just 29.36μs

Anti-jam GPS nulling and excision

The Digital Antenna Control Unit (DACU) mitigates narrow-band interference, using an excision process, and broadband interference by creating directed nulls in the antenna pattern. These techniques provide significant anti-jam protection even in highly dynamic, multi‑jammer environments.

Chelton is able to provide a complete anti‑jam solution for the platform. Installations can make use of a variety of CRPA options and cabling lengths, to best suit the form factor requirements of the platform. The DACU interfaces the antenna array to the GPS receiver.

The DACU is designed for size and weight constrained platforms, such as small airborne and unmanned installations. The DACU includes the ability to determine the direction of multiple spatially separated jammers with an accuracy of better than 5 degrees when the system is calibrated to the aircraft platform.