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Radio and Electronic Engineer

Issue 3 • Date March 1983

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Displaying Results 1 - 7 of 7
  • World Communications Year

    Publication Year: 1983 , Page(s): 89 - 90
    Save to Project icon | PDF file iconPDF (304 KB)  
    Freely Available from IEEE
  • The frequency dependence of urban man-made radio noise

    Publication Year: 1983 , Page(s): 92 - 98
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (828 KB)  

    A series of measurements in urban, suburban and city-centre areas has been conducted at frequencies in the range 40 MHz to 900 MHz. Analysis of the detected envelope of man-made noise in this frequency range has shown that notwithstanding the different experimental conditions, there is a general decrease in the level of noise as the monitoring frequency increases. At lower frequencies external noi... View full abstract»

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  • Statistical characterization of v.h.f. man-made radio noise

    Publication Year: 1983
    Cited by:  Papers (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1658 KB)  

    Recordings of the detected envelope of v.h.f. man-made noise measured at various urban and suburban locations have been analysed to produce amplitude and time statistics. These are presented as graphs of amplitude probability distribution, average level crossing rate, pulse duration distribution and pulse interval distribution. Corresponding graphs at different locations have the same general form... View full abstract»

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  • The processing of synthetic aperture radar signals

    Publication Year: 1983 , Page(s): 107 - 114
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (981 KB)  

    The basis for processing synthetic aperture radar signals is derived and the limitations imposed by unwanted platform motion discussed. The hardware realization of both unfocused and focused SAR processing is briefly described in terms of a block diagram and of the required complex multiplication time and storage capacity. Some additional processes are also briefly outlined. It is not possible to ... View full abstract»

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  • Digital video recording-from theory into practice

    Publication Year: 1983 , Page(s): 115 - 120
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (823 KB)  

    This paper first reviews the first seven years history and evolution of digital video recording. Secondly it examines some of the technical issues currently under review by experts within the industry. Consideration is given to the limitations of magnetic recording and the influence these have on the choice of tape format for digital video recording. Finally a review is presented of the experience... View full abstract»

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  • Fibre-optic gyro for sensitive measurement of rotation

    Publication Year: 1983 , Page(s): 121 - 124
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (437 KB)  

    A sensor is described which allows the detection of rotation with respect to an inertial frame. The sensor is based on the Sagnac effect, which is measured with a fibre-optic ring interferometer. The fibre gyro is characterized by the following features: a phase modulation scheme to obtain a high sensitivity; a single-mode filter to achieve low drift; depolarized light in order to get a constant s... View full abstract»

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  • The design and operation of a second-generation carrier-domain magnetometer device

    Publication Year: 1983 , Page(s): 125 - 132
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2238 KB)  

    The carrier-domain magnetometer generates an electrical output having a frequency proportional to an applied magnetic field, arising from the rotation of the current distribution in a circular bipolar transistor structure with its axis parallel to the field. An improved version of this silicon transducer has been designed and investigated, which has a sensitivity of about 100 kHz/T. The sensitivit... View full abstract»

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