GIRD has developed a novel algorithm for detecting the DOA of sources of unknown bandwidths and unknown center frequencies, which provides a wideband extension to well-known MUSIC algorithm and exploits some general signal characteristics to find the DOA of signal sources. A demonstration prototype has been built as part of the requirement of this Air Force SBIR Phase II Project.

GIRD Systems has developed an interference cancellation prototype for US Navy SPAWAR that usesa novel software-based algorithm to eliminate the effects of narrow in-band interference for DAMA SATCOM receivers. Our interference cancellation techniques can remove multiple narrowband interferers so that the signal of interest can be correctly demodulated.

GIRD Systems has developed proprietary algorithms to exploit signals of opportunity for geolocation and navigation when access to GPS is jammed or unavailable. An SBIR Phase II program has been completed and a prototype system has been built to demonstrate this capability. Using signals of opportunity, our system is able to detemine its absolute position using a few measurements.

Array processing makes use of multiple transmit and/or receive antennas so that the diversity afforded by multiple elements can be used for processing gain, improve security or spatial filtering/beamforming. One application of array processing is the mitigation of cosite interference for IED jamming on vehicle convoys with dynamic geometries.