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Radio and Electronic Engineer

Issue 7.8 • Date July-August 1983

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Displaying Results 1 - 9 of 9
  • Electronics across the years

    Publication Year: 1983
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (170 KB)  

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  • Paul Adorian¿an appreciation

    Publication Year: 1983
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  • The way ahead for maritime satellite communications

    Publication Year: 1983 , Page(s): 254 - 256
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  • Digital audio mixing

    Publication Year: 1983 , Page(s): 257 - 264
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1382 KB)  

    A present-day sound mixing desk accepts a number of audio signals from microphones and/or tape machines and can be used to alter the tonal character of the signals, change the sound level, mix signals together and route them to selected outputs. An example of the use of a mixing console is given and this general treatment is then extended to a discussion of the advantages that can be obtained by i... View full abstract»

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  • Engineering of the transmission network for the fourth television channel

    Publication Year: 1983 , Page(s): 265 - 282
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    The factors involved in the planning and construction of the IBA's u.h.f. fourth channel network and the overall technical design requirements of the main transmitting stations are discussed in terms of the environmental, reliability and performance requirements. Transmitter configurations and the philosophy adopted for the control and monitoring systems are presented. The decision to introduce a ... View full abstract»

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  • A micro-computer system for cell electrophoresis measurements

    Publication Year: 1983 , Page(s): 283 - 286
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (458 KB)  

    Experimental measurements of the velocity of blood cells have been used in research into the early detection of cancer in patients. These measurements have been made by manually timing cells moving across a television screen. This technique is tedious, involves the timing of over a hundred cells and is therefore subject to error. A low-cost microcomputer system was designed to automate the measure... View full abstract»

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  • Conduction current signalling in the vicinity of a sub-sea offshore structure

    Publication Year: 1983 , Page(s): 287 - 294
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1254 KB)  

    This paper reports the results of a series of measurements designed to determine the viability of using conduction current techniques for data transmission in the offshore platform environment. The results show that ranges predicted some authors for conduction current systems in the open were not observed in practice. In particular, measurements conducted in the vicinity of a large metallic underw... View full abstract»

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  • Application of time-delay-and-integrate c.c.d.s in sector scanning sonars

    Publication Year: 1983 , Page(s): 295 - 300
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (829 KB)  

    Non-uniform time-delay-and-integrate (n.u.t.d.i.) devices have been designed and used for fast beam scanning. The possibility of using such devices for very high angular resolution is examined and it is shown that there must be a trade-off between the number of angular resolution cells and the scanning rate. It is shown however that an improved sector scanning sonar may be realized by combining mo... View full abstract»

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  • Stereoscopic visualization and contour mapping of the sea bed using a bathymetric sidescan sonar (BASS)

    Publication Year: 1983 , Page(s): 301 - 307
    Cited by:  Papers (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1482 KB)  

    Besides the backscattered amplitude measurements of a conventional sidescan sonar, the Bathymetric Sidescan Sonar (BASS) makes simultaneous measurements of the depth of sea bed throughout the sidescanned area. It does this by determining the angle of the returning wavefront at each instant in time and combining the result in an appropriate manner with the range measurement. The depth information b... View full abstract»

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