The 7-6008 from Cobham Aerospace Connectivity is an 8-Channel GPS Anti-Jamming Digital Antenna Control Unit (DACU) that operates in the L1 and L2 bands. It has been designed to be used with an active controlled reception pattern array (CRPA) receiver unit. This M-Code-compliant anti-jam processor mitigates narrowband interference using an excision process and broadband interference by creating directed nulls in the antenna pattern, resulting in a significant anti-jam protection, even in highly dynamic, multi-jammer environments. It can be used in size and weight-constrained platforms, such as small airborne and unmanned installations.
The 7-6008 interfaces the GPS antenna to the built-in CRPA receiver to optimally control the phase of the beam and create nulls in the desired direction, improving the signal to noise ratio (SNR). It also includes the ability to determine the direction of multiple spatially separated jammers with an accuracy of better than 5° when the system is calibrated to the aircraft platform. This DACU has a latency of 29.36 µs, making it offer twice the speed compared to existing anti-jam solutions. It is being used on US Army’s Gray Eagle UAV systems, resulting in enhanced security and resistance to third-party jammers.
The 7-6008 provides a gain of more than 29.5 dB and has a noise figure of less than 4.5 dB. It requires a DC supply of 28 V and consumes less than 42 W of power. This unit is available in a MIL-STF-810G (environmental) and MIL-STD-461F (EMC) certified enclosure that measures 257 x 97 x 131 mm with SMA (female) and TNC (female) connectors.
