Spectrum Signal Processing Inc., a subsidiary of Spectrum Signal Processing Inc. announced that the Government Communications Systems Division of Harris Corporation has selected Spectrum's flexComm SDR-4000 rugged software defined radio (SDR) solution to be deployed in field trials of the United States Navy's Multi-Mission Unmanned Surface Vehicles (MMUSV). Under the agreement, Spectrum will supply the signal processing system onboard the MMUSV that communicates with a processing system aboard a Littoral Combat Ship. Field trials for the MMUSV are scheduled to begin in early 2007. The MMUSV, a vessel similar to a rigid inflatable boat, is one of the mission modules that can launch from a Littoral Combat Ship.