Award Data

A CRYOCOOLER CAPABLE OF OPERATING UNDER EXTREMELY HIGH ACCELERATION LEVELS IS PROPOSED. THE CRYOCOOLER USES THE LINDE-HAMPSON CYCLE, AND CAN REACH APPROXIMATELY 80 KELVIN. MULTI-STAGE UNITS, TO REACH LOWER TEMPERATURES, ARE ALSO POSSIBLE.

THIS PROPOSAL IS A UNIQUE AND INNOVATIVE APPROACH TO CONSTRUCTING 2-D GAAS ACOUSTO-OPTIC LIGHT DEFLECTORS FOR HIGH POWER LASER APPLICATIONS WITHOUT THE USE OF MIRRORS. ADVANTAGES OF SUCH SYSTEM OVER CONVENTIONAL LASER BEAM MIRRORS ARE THE INABILITY OF MIRRORS TO DEFLECT AT HIGH SPEEDS DUE TO THE MIRROR'S INERTIA. AS A RESULT WITH ELECTRONIC ACOUSTO-OPTIC DEVICES, THEIR PERFORMANCE AND HENCE SPEED ...

WITH THE INTEREST IN THE DEVELOPMENT OF VERY FAST COMPUTERS, MUCH FASTER THAN THE CONVENTIONAL DIGITAL CHIP-BASED SYSTEM, THE FUTURE SEEMS VERY BRIGHT FOR OPTICAL-SIGNAL PROCESSING. TWO-DIMENSIONAL OPTICAL PROCESSING IS BEING USED FOR PATTERN RECOGNITION, MACHINE VISION, AND OPTICAL COMPUTING. CURRENTLY, A MAGNETO-OPTIC SPATIAL LIGHT MODULATOR (MOSLM) IS USED TO CONVERT ARRAYS OF PROGRAMMABLE ELEC ...

A light induced phase grating in photorefractive crystals couple the optical fields of the pump and signals beam in a very similar way as a beam splitter combines the signal and local optical fields in a coherent optical communications receiver. The advantages of photorefractive crystals are: 1) the absence of 3db loss in the output intensity of the signal beam unlike in the case of 50/50 beam spl ...

CURRENTLY AVAILABLE ALGORITHMS FOR SYSTEM IDENTIFICATION AND CONTROL ARE NOT COMPLETELY RELIABLE FOR AUTOMATIC IMPLEMENTATION ON MICROPROCESSORS IN REAL TIME. A NEW CLASS OF ALGORITHMS BASED UPON A GENERALIZED SINGULAR VALUE DECOMPOSITION IS BEING CONSIDERED FOR SYSTEM IDENTIFICATION, STATISTICAL MODEL ORDER DETERMINATION, MODEL ORDER REDUCTION, AND PREDICTIVE CONTROL. IN THIS APPROACH, THE ALGORI ...

CURRENT COMPUTATIONAL APPROACHES ARE INADEQUATE TO PERFORM REAL TIME PATTERN RECOGNITION AND ADAPTIVE RESOURCE ALLOCATION IN ORDER TO SUITABLY RESPOND TO ENEMY THREATS WHEN COMPARED TO THE DYNAMICALLY CHANGING MILITARY ENVIRONMENTS. DESPITE DECADES OF EFFORT BASED UPON STATISTICAL SIGNAL PROCESSING AND PATTERN RECOGNITION METHODOLOGY, THEREAL TIME RECOGNITION OF COMPLEX TARGETS REMAINS A CHALLENGI ...

A compact x-ray laser driver with a high repetition rate is the subject of this phase I project. Most existing x-ray laser drivers are huge (1000s of square feet of floor space), expensive ($10,000,000+), have a low repetition rate (1/hr), are complex and require several PhDs to keep them working. Thus applications of present x-ray lasers are limited. In contrast, the proposed laser will occupy on ...

THE ACQUISITION OF POST BOOST PHASE VEHICLES AND/OR INDIVIDUAL REENTRY VEHICLES BY AN INFRARED SENSOR ON BOARD A SMALL G HARDENED PROJECTILE WHICH SUBSEQUENTLY HOMES ON AND IMPACTS ITS TARGET OFFERS AN ATTRACTIVE APPROACH FOR REENTRY VEHICLE KINETIC ENERGY KILL. THE ACQUISITION, TRACKING, DISCRIMINATION AND GUIDANCE FUNCTIONS REQUIRED OF SUCH AN IR SENSOR RESULT IN A NUMBER OF CRITICAL ISSUES. THE ...

Although there have been many advances in optics for low energy x-rays, (

A PROOF OF PRINCIPLE EXPERIMENT IS BEING CONSTRUCTED THAT WILL CLEARLYDEMONSTRATE THE ESSENTIAL ELEMENTS OF ARRAY OPERATION. AN OSCILLATOR AND TWO AMPLIFIER SECTIONS ARE BEING SUBJECTED TO PERFORMANCE TESTS. PHASE ARRAY OPTICAL RADARS OR LIDARS OPERATING WITH RELATIVELY LARGE SYNTHETIC APERTURES CAN EXHIBIT MANY OF THE SAME RAPID POINTING AND TRACKING FEATURES ASSOCIATED WITH MICROWAVE SYSTEMS, AN ...