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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Page: 1 2 3 4 5 Hits 81 – 92 of 92 81 Intelligent Assistant Systems: An Artificial Intelligence Approach to Detecting Performance Degradation and Pilot Incapacitation Boy, Guy A. In: DTIC AND NTIS (1990) BASE Show details 82 Removal of Noise from Noise-Degraded Speech Signals. Panel on Removal of Noise from a Speech/Noise Signal In: DTIC AND NTIS (1989) BASE Show details 83 Performance Analysis of Large Adaptive Sidelobe Canceller Arrays with Reused Elements Ward, J.; Compton, Jr, R. T. In: DTIC AND NTIS (1989) Abstract: This report considers adaptive sidelobe canceller arrays (SLCs) in which the mainbeam and auxiliary signals are obtained from the same set of elements. The SLC with element reuse is different from the conventional SLC in that thermal noise components of the mainbeam and auxiliary signals are correlated. This correlation causes sidelobe degradation when the number of degrees of freedom exceeds the number necessary to cancel a given jammer scenario. The equations for a general planar array with an arbitrary signal scenario are first formulated. These equations are then used to examine array performance with different auxiliary configurations. Both auxiliaries form from a single array element and auxiliaries form from subarrays of elements are studied. Various auxiliary configurations are investigated to determine how the auxiliaries should be chosen to provide good cancellation of multiple jammers while retaining low sidelobes in the mainbeam. It is shown that using single- element auxiliaries may result in serious SLL degradation whenever there are extra degrees of freedom. This degradation can be overcome by using subarray auxiliaries that satisfy an orthogonality condition on their patterns. Excellent cancellation and sidelobe level performance can be attained with small subarrays chosen to satisfy this orthogonaltiy condition. Keyword: *ADAPTIVE SYSTEMS; *CANCELLATION; *JAMMING; *NOISE(ELECTRICAL AND ELECTROMAGNETIC); *SIDELOBES; *SIGNALS; ARRAYS; AUXILIARY; CONFIGURATIONS; Countermeasures; Cybernetics; DEGRADATION; DEGREES OF FREEDOM; EQUATIONS; LOW LEVEL; NOISE; ORTHOGONALITY; PERFORMANCE TESTS; PERFORMANCE(ENGINEERING); PLANAR STRUCTURES; Radiofrequency Wave Propagation; SCENARIOS; THERMAL RESISTANCE URL: http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA212888 http://www.dtic.mil/docs/citations/ADA212888 BASE Hide details 84 The Effects of Hearing Protectors on Speech Communication and the Perception of Warning Signals Suter, Alice H. In: DTIC AND NTIS (1989) BASE Show details 85 Intelligibility of ICAO (International Civil Aviation Organization) Spelling Alphabet Words and Digits Using Severely Degraded Speech Communication Systems. Part 1. Narrowband Digital Speech. Schmidt-Nielsen,Astrid In: DTIC AND NTIS (1987) BASE Show details 86 Voice Degradation in Using Speech Recognisers for Transcribing Inventory Data. Kirby,H R; Roach,P J In: DTIC AND NTIS (1987) BASE Show details 87 Two Approaches to Predictive Indeterminacy Stump, Gregory In: Linguistics Faculty Publications (1984) BASE Show details 88 Evidence for defective transfer ribonucleic acid in polymyopathic hamsters and its inhibitory effect on protein synthesis Bester, André J.; Gevers, Wieland. - 1973 BASE Show details 89 Multiplexing of Delta Modulated Signals. Volume 1. Bennier, Donald J.; McKibbin, John; Wollaston, Terence C. In: DTIC AND NTIS (1968) BASE Show details 90 ADVANCED ECM SUSCEPTIBILITY MEASUREMENT OF VOICE COMMUNICATIONS EQUIPMENTS. Mutschler, C.; Schultz, J.; Strohmeyer, G. In: DTIC AND NTIS (1967) BASE Show details 91 SYNTHETIC SPEECH STUDY. BOGUSZ,J.; Smith,R.; Strohmeyer,G. In: DTIC AND NTIS (1966) BASE Show details 92 LETTER TO THE EDITOR Conventional 39 end formation is not required for NMD substrate recognition in Saccharomyces cerevisiae Kristian E. Baker; Roy Parker In: http://www.case.edu/med/coller/Baker and Parker 2006.pdf BASE Show details Page: 1 2 3 4 5

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