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IEEE Transactions on Instrumentation and Measurement

Issue 2 • June 1980

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Displaying Results 1 - 19 of 19
  • Table of contents

    Publication Year: 1980, Page(s): c1
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  • IEEE Instrumentation and Measurement Society

    Publication Year: 1980, Page(s): c2
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  • Active Filters for Measuring Time-Domain Frequency Stability

    Publication Year: 1980, Page(s):89 - 93
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (899 KB)

    The instrumentation for measuring the filter variance is simple and low cost. An assembly of the test set known as PCC-1 for evaluaig the time-domain frequency stability of signal generators was developed in the Chengdu Institute of Radio Engineering. It also includes specially designed active filters for measuring the filter variance. Experimental results are presented which show that the high-pa... View full abstract»

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  • Frequency-Domain Measurement of the Frequency Stability of a Maser Oscillator

    Publication Year: 1980, Page(s):94 - 97
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (802 KB)

    In this paper we present a direct measurement of the spectral density of both the fractional frequency fluctuations and the phase fluctuations for a rubidium (Rb) maser oscillator. A truncated polynomial is fitted to each independent set of data obtained over a Fourier frequency range between 0.1 Hz and 100 Hz. They are Sy(f) = 1.9 ×10-25f-2 + 3.4 × 10-27f2 and Sϕ = 1.2 × 10... View full abstract»

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  • Theory of Hydrogen-Maser Auto-Tuning Systems Based on the Frequency or the Phase Method

    Publication Year: 1980, Page(s):98 - 104
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1286 KB)

    A theoretical analysis of auto-tuning systems for actively operated hydrogen (H) masers is presented. Tuning procedures based on changes in the frequency or the phase of oscillation are considered and compared. The analysis takes into account the basic results of sampling theory. The condition which should be satisfied when the reference frequency source is perturbed by white or flicker phase nois... View full abstract»

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  • Clock Error with a Wiener Predictor and by Numerical Calculation

    Publication Year: 1980, Page(s):105 - 113
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1263 KB)

    This paper gives a closed-form solution for the minimum error one can expect from a linear prediction filter applied to a clock for which the fractional frequency power spectrum consists of white noise and the integral of white noise. Measurement error is also included. Expressing the problem as a Wiener filter rather than a Kalman filter simplifies the solution. The Kalman matrices in the Wiener ... View full abstract»

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  • Light-Reflection Liquid-Level Sensor

    Publication Year: 1980, Page(s):113 - 115
    Cited by:  Papers (7)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (555 KB)

    When parallel-polarized light is reflected at an angle ϕ by the interface between two transparent media with refractive indices n and N, the interface reflectance is switched from 1 to 0 by varying the refractive index ratio N/n from sin ϕ to tan ϕ. This is the basis of a light-reflection liquid-level sensor that uses a prismatic window in the side wall of the vessel whose ... View full abstract»

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  • The Design and Construction of a General-Purpose Laboratory Data Acquisition System

    Publication Year: 1980, Page(s):116 - 119
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1657 KB)

    The software and hardware design of a general-purpose dual-microprocessor data acquisition system is described. The hardware possesses several novel features to allow data capture at speeds of up to 600 kHz. The software provides the user with a simple but powerful interface for setting up test requirements, including a certain amount of real-time control, and for retrieving and examining the data... View full abstract»

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  • Dielectric Measurements in a Shielded Open Circuit Coaxial Line

    Publication Year: 1980, Page(s):120 - 124
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB)

    A coaxial transmission line terminated by a shielded open circuit is convenient for dielectric measurements over a frequency range from quasi-static to microwave in a single sample holder. The transmission line analysis including the open circuit termination covered by lossy dielectric is outlined. Examples of measurements of known liquids are given. Errors may arise because the support bead of a ... View full abstract»

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  • Electric Potential Measurements in Gaseous Insulating Materials by Corona Probe in a Controlled Environment

    Publication Year: 1980, Page(s):125 - 130
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1244 KB)

    The experimental determination of electric potential in gaseous insulating materials is performed using a corona probe. This method can be used to measure point values of electric potential from dc to ac at industrial frequency values. The proposed method, after an initial calibration of the probe, allows the determination of the amplitude of the electric potential at the point in space where the ... View full abstract»

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  • On the Balance of an AC Wheatstone Bridge

    Publication Year: 1980, Page(s):131 - 136
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1123 KB)

    The conditions for balance of an ac Wheatstone bridge as commonly shown in practice are simplified for ease of design and handling. As a result the measurements are less accurate. To improve this state, the writer has developed twenty-eight pairs of equations based on rigorous solutions. They were further refined by adopting a new set of parameters: ρ, ξ, and γ. An example ... View full abstract»

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  • Report on International Intercomparison No. 72-10 Attenuation at 30 MHz

    Publication Year: 1980, Page(s):137 - 140
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (670 KB)

    This report gives the results of measurements of attenuation at 30 MHz, made on 5 traveling standards, nominally 3, 6, 10, 20, and 40 dB by national standards laboratories in Australia, Canada, the German Federal Public, Hungary, Japan, Sweden, the U. K., and the U. S. A. View full abstract»

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  • Error Signal Magnification in a Pound Stabilizing System

    Publication Year: 1980, Page(s):141 - 143
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (599 KB)

    The theoretical analysis of a modified Pound stabilizing system having a path difference between a reference plane and the frequency determining resonant cavity nλ/2 greater than that required by the usual Pound system shows that the error signal amplitude produced by a small change in the resonant frequency of the resonant cavity is a factor (4n + 1) greater than that of the normal system... View full abstract»

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  • Combination of Local Heating and Radiometry by Microwaves

    Publication Year: 1980, Page(s):143 - 144
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (415 KB)

    New methods for combination of microwave heating and microwave radiometry are presented. The processes experimented with here make it possible to collect the thermal signal emitted in the very volume in which the power dissipation is achieved. They can be used for medical (atraumatic control of local hyperthermia) or industrial applications (regulation of microwave heating). View full abstract»

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  • A Technique for the Measurement of Large (Multiwavelength) Phase Shift at Microwave and Millimeter-Wave Frequencies

    Publication Year: 1980, Page(s):145 - 146
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  • Peak Frequency Detection

    Publication Year: 1980, Page(s):146 - 147
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  • Contributors

    Publication Year: 1980, Page(s):148 - 151
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  • An Invitation to Membership

    Publication Year: 1980, Page(s):151-a - 151-c
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  • IEEE Instrumentation and Measurement Society

    Publication Year: 1980, Page(s): 151-b
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Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

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Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
800 King Edward Ave.
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