Browsing Reprints by Issue Date

Now showing items 121-140 of 548

    • The steady state of the step structure in the Tyrrhenian Sea 

      Molcard, Robert; Tait, Robert I. (NATO. SACLANTCEN, 1978/10)
      A deep step structure, in which mixed layers alternate with high gradient interfaces, is a characteristic feature of the Tyrrhenian Sea. Three oceanographic cruises (May 1972, May 1973 and October 1974), supported by the ...

    • Model for the frequency spread of backscattered underwater sound based on the facet model of the rough sea surface 

      Schwarze, Herward (NATO. SACLANTCEN, 1978/11)
      A theoretical model for the doppler spread of backscattered acoustic waves from the rough sea surface is described on the basis of the decomposition of the continuous sea-surface spectrum that leads to the concept of facets. ...

    • Two-dimensional space-series analysis for sea-floor roughness 

      Akal, Tuncay; Hovem, Jens M. (NATO. SACLANTCEN, 1979/10)
      For a quantitative description of the sea-floor roughness, a numerical method has been developed to obtain the two-dimensional power spectrum and the autocorrelation function. The determination of these parameters gives ...

    • The MPS-3 and the SPS-81 

      Padgett, John S. (NATO. SACLANTCEN, 1979/12)
      The Larqe Aperture Acoustics Branch of the Naval Research Laboratory has developed a sea-qoinq signal processinq system in which two different types of array processors are used - a Signal Processing Systems SPS-81 and ...

    • Some high efficiency digital signal processing techniques for high speed signal processing systems 

      Cappellini, Vito (NATO. SACLANTCEN, 1979/12)
      Some high efficiency digital signal processing techniques, based on digital filtering are presented for real-time general-purpose, high-speed signal processing systems. At first high efficiency one-dimensional and ...

    • Overview of the ADPS signal processor 

      Pennoyer, Bryson (NATO. SACLANTCEN, 1979/12)

    • Laboratory utilization of a standard signal processor 

      Molino, Frank W.; Vernaglia, John E.; Lambs, Jerry C.; Coggins, William J. (NATO. SACLANTCEN, 1979/12)
      The AN/UYS-l Advanced Signal Processor (ASP), or PROTEUS, is the U.S. Navy's standard signal processor and is being utilized in several systems. For shipboard use, the ASP is used as a processor with no peripherals, generally ...

    • Development of military ARGUS computers and MOD bus for close-coupled signal processing applications 

      Nairn, Donald (NATO. SACLANTCEN, 1979/12)
      The next generation of Naval sonar systems will make extensive use of flexible programable modules to implement signal-processing algorithms. A number of UK Defence Establishments are engaged in a series of coordinated ...

    • A general purpose software system for applications in different fields of physics 

      Ring, Poul B. (NATO. SACLANTCEN, 1979/12)
      The paper presents the principle of a software system (FTSS) developed by the Danish Defence Research Establishment (DDRE) for applications in different fields of physics. Software is made up by independent modules exchanging ...

    • SACLANTCEN real-time signal processing system 

      Seynaeve, Robert; Boni, Pier Angiolo; Duarte, Vasco; McCann, Michael J.; Nesfield, Philip (NATO. SACLANTCEN, 1979/12)
      To meet its increasing requirements in real-time signal processing, SACLANTCEN has developed a general purpose. signal processing system called WARP to be uS.ed with a fairly wide range of underwater acoustic research ...

    • System functional migration: high-level language to hardware 

      Wu, Y. S.; Lloyd, G. R. (NATO. SACLANTCEN, 1979/12)
      This paper intends to examine system functional allocation among available processing resources in a systematic way. The discussion will focus first on the criteria for assigning functions to processors, that is, horizontal ...

    • MAP 300/AP 120B comparison 

      Alker, Hans Jorgen (NATO. SACLANTCEN, 1979/12)

    • NOSC signal processing evaluation laboratory 

      Pennoyer, Bryson (NATO. SACLANTCEN, 1979/12)
      A new acoustic Signal Processing Evaluation Laboratory (SPEL) at the Naval Ocean Systems Center (NOSC), San Diego, is described. This laboratory has been designed to support a broad program of research and development of ...

    • Martinus - multiprocessor for high capacity real-time processing 

      Lundh, Yngvar (NATO. SACLANTCEN, 1979/12)
      Development of circuit technology in recent years now makes it feasible to build powerful processing machines at quite considerable savings - in comparison to those which have been considered feasible earlier. These savings ...

    • Real-time expanded-band beamforming using a complex heterodyner and fast array processor 

      Crowe, D. Vance (NATO. SACLANTCEN, 1979/12)
      At the Defense Research Establishment Atlantic Dartmouth, Nova Scotia, Canada a data aquisition sytem been engineered to monitor and beamform data from element line arrays. This system has been designed to with either towed ...

    • Experience with a MAP 300 array processor 

      Nesfield, Philip (NATO. SACLANTCEN, 1979/12)
      The paper is a summary of the experience collected during almost two years of programming a CSPI MAP 300 array ' processor in signal processing applications. After a short overview of the most interesting features of SNAP ...

    • Signal-processing language and operating system 

      Weinstein, S. (NATO. SACLANTCEN, 1979/12)
      Signal Processing Language/One (SPL/I) was developed at the Naval Research Laboratory (NRL) as a high-level computer programming language for signal processing. SPL/I is the first high-level language to be designed for ...

    • Display techniques 

      Meatcher, S. F. (NATO. SACLANTCEN, 1979/12)
      This paper sets out to review current sonar information displayc and to indicate how technological advances over the past decade lead to the concept of a common information display console. To appreciate the problems ...

    • Using intelligent graphics terminals in real-time processing 

      Steiger, Daniel (NATO. SACLANTCEN, 1979/12)
      At the Naval Research Laboratory intelligent graphics terminals are being utilized for real-time acquisition, storage, processing and display of oceanographic data when mini-computer systems are inappropriate. The intelligent ...

    • A micro-programmable correlator for real-time radar processing 

      Alker, Hans Jorgen (NATO. SACLANTCEN, 1979/12)
      This paper presents a novel design of a multibit, digital correlator for incoherent scatter radar observations. By utilizing bit-slice microprocessor elements and internal control by microcode instructions, a high-speed ...