The DACU4c-7-6150 from Chelton is an Integrated GNSS Anti-Jamming System. It integrates a four-channel CRPA and advanced miniaturized GNSS anti-jam processing electronics into a compact package. This system can perform direction finding, jammer classification, and anti-spoofing functionalities in a single compact box, making it a low-SWaP solution. This M-code-compatible system uses an excision process to mitigate narrowband interference and creates directed nulls in the antenna pattern to reject broadband interference, which result in providing significant anti-jam protection even in highly dynamic multi-jammer environments. It can determine the direction of 3 broadband interferers per band with an accuracy of better than 5° when the system is calibrated to the aircraft platform. It requires a DC supply of 28 V and consumes less than 17 W of power.
The DACU4c-7-6150 includes core firmware that utilizes the space-time adaptive processing (STAP) technique to ensure a high degree of protection against complex threat scenarios. It is designed to maximize installation flexibility through optional power and diagnostics data over RF and a highly reconfigurable baseplate tailored to the target platform. This anti-jam system is available in a screw-mount enclosure that measures 100 x 85 mm and is ideal for small airborne and unmanned vehicle applications. It is compliant with MIL-STD-810, MIL-STD-461 and MIL-STD-1275 standards for land, rotary wing, fixed wing and UAS platforms.
