Award Data

Recent advances in optical processing have created an opportunity to build massively parallel processing units which are comparable in size to current desk top computers. This massive parallelism promises orders of magnitude increase in processing speed and the optical nature of the system makes it ideal for image and array processing. To date, the primary roadblock in recognizing the potential ...

One of the challenges facing researchers who measure multiple fragment trajectories of modern weapons is the retrieval of useful data. Data is not simply a time record of two-dimensional images of the dynamic event. Useful data is, among others, the actual trajectory of those fragments. In order to acquire useful data, it is necessary to develop an interface between the time record of images an ...

In the almost three decades since its inception, laser radar has progressed from cumbersome laboratory prototypes to reliable field systems. LADAR systems are currently based upon either a pulsed, time of flight measurement technique or a coherent detection scheme. Time of flight measurements systems are effective but suffer from limited spatial resolution and susceptibility to target camouflagi ...

This will develop an alternative technology for precision actuation and latching. A linear actuator based on paraffin expansion will be coupled with an innovative latching mechanism that allows the actuator to hold position when power is turned off. The paraffin actuator is a simple, reliable device with abundant flight heritage. It has potential for ectremely accurate positioning control. It wi ...

For most cryogenically cooled systems, it is necessary to locate the cryocooler in close proximity to the cooled assemblies. This places highly demanding requirements on the cryocooler, its integration into the spacecraft, and subjects the cooled assembly to unwanted disturbances. Since the spacecraft radiator is usually remote from the cooled assemblies, a heavy conductive strap or heat pipe is ...

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A novel technique for the processing of c-dopcd Yb-Er optical fiber cladding pumped lasers will be explored. If high power at 1550 nm is desired, it is advantageous to pump a c-dopcd Yb-Er fiber laser at 915 nm where there is a broad energy absorption band for Yb.. This energy is then resonantly transferred to the erbium co-dopant that provides the gain medium. in order to prevent back transfer fr ...

Performance of US students in mathematics and physics has been limited, partly because the traditional pedagogy relies on logical and linguistic methods of teaching, and students are primarily assessed on fact knowledge and discrete skills. Recent achievements in computer science provide revolutionary means for educational reform. Thus, use of the World Wide Web and Java - a package of a new obj ...

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Superconducting light modulator is proposed which uses the physical properties of superconductors to greatly increase the transmission capacity of currently installed fiber optic lines Increased transmission capacity is required to make new services, such as video-on-demand, widely available at a reasonable cost The key inhibitor of fiber transmission capacity is the rate at which optical data can ...