LOW-COST MULTI-SPECTRAL SIGNAL PROCESSING TO SIMULTANEOUSLY PROCESS SPATIALLY AND TEMPORANEOUSLY DISJOINT WIDEBAND...

IN THIS PROPOSAL, WE PRESENT AN INNOVATIVE TECHNIQUE FOR MULTISPECTRAL SIGNAL PROCESSING USING MULTICHANNEL ACOUSTO-OPTIC BRAGG CELLS TO SIMULTANEOUSLY PROCESS SPATIALLY AND TEMPORANEOUSLY SEPARATE WIDEBAND SIGNALS. THIS OPTICAL SYSTEM WHEN USED IN CONJUNCTION WITH A CONVENTIONAL SPREAD-SPECTRUM RECEIVER WILL BE ABLE TO IDENTIFY AND ACQUIRE THE CODE OF THE TRANSMITTING EMITTER. THE PROCESSOR WILL PERFORM CLOSE TO THAT OF A PARALLEL MATCHED FILTER RECEIVER, THUS BEING LPI AND AJ BY REDUCING THE REQUIRED SYNCHRONIZATION PERIOD. IT RELIES ON A NONHETERODYNING SPACE/TIME INTEGRATING MULTICHANNEL ACOUSTO-OPTIC CORRELATOR. WE PROPOSE TO CARRY OUT A THOROUGH INVESTIGATION ON THE POSSIBILITIES OF USING SUCH A SYSTEM, ANALYZE IT'S PERFORMANCE CAPABILITIES AND PRESENT A FEASIBLE DESIGN ARCHITECTURE FOR SYSTEM IMPLEMENTATION. THE PRODUCT OF THIS RESEARCH WILL BE A VALUABLE SYSTEM FOR BOTH THE MILITARY AND THE COMMERCIAL SECTOR. ANTICIPATED BENEFITS/POTENTIAL APPLICATIONS - THE PROPOSED MULTICHANNEL SIGNAL PROCESSING SYSTEM WILL BENEFIT BOTH CIVILIAN AND MILITARY COMMUNICATIONS. IT'S ABILITY TO OPERATE ON MANY POSSIBLE EMITTERS WILL MAKE IT APPLICABLE TO BATTLEFIELD SURVEILLANCE SYSTEMS AND TO MOBILE AND PERSONAL COMMUNICATION NETWORKS WHERE MULTI-USER RECEIVERS ARE REQUIRED.