A low-loss broad-band six-bit phase shifter has been developed in a form suitable for airborne phased array radar applications. A glass-based microwave circuit integration technology (GMIC, Glass Microwave Integrated Circuit) is used, in which thi n-fi 1 in, process-oriented photolithographic technology is used to realize all of the passive components on a glass surface. Hybrid-coupled reflection circuitry covers the frequency range 6-18 GHz with losses averaging about 3 dB at 6 GHz to about 8 dB at 18 GHz over the 64 phase states covering a 360" range.
Aerodyne Research, Inc. (ARI) has shown that its own proprietary methods of statistical pattern recognition (SPR), operating on data readily obtained in real time by an image scanning system, are able to perform detailed pattern recognition and classification tasks. Specifically, using well defined and directly obtainable characteristics of typewriter characters, a technique is demonstrated that will allow rapid and objective association of typewritten material with the source typewriter.A generalization of this capability is also discussed.
Microdensitometers have already solved the problem of maintaining high spped and high accuracy across large regions of space. Modifications are needed to operate with much higher speed and in the reflection mode. Experimental results confirm accuracies better than 0. 1 gm over areas over 40 cm.
AbstractMicrodensitometers have already solved the problem of maintaining high spped and high accuracy across large regions of space. Modifications are needed to operate with much higher speed and in the reflection mode. Experimental results confirm accuracies better than 0.1 jum over areas over 40 cm.
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