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Telemetry and Remote Control, IRE Transactions on

Issue 2 • Date May 1957

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Displaying Results 1 - 13 of 13
  • [Front cover]

    Publication Year: 1957 , Page(s): c1
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  • IRE Professional Group on Telemetry and Remote Control

    Publication Year: 1957 , Page(s): c2
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  • The chairman's message

    Publication Year: 1957 , Page(s): 1
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  • Ballistic missile telemetry

    Publication Year: 1957 , Page(s): 2 - 5
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    The record-breaking attendance at this 1956 National Telemetering Conference is, I think, indicative of the rapidly increasing importance of the telemetering field. I suspect that the recent ballistic missile programs have been and will be in no small part responsible for a rapid acceleration in the telemetering field. View full abstract»

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  • Telecontrol

    Publication Year: 1957 , Page(s): 5 - 8
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    The original concept of telemetry has become too limited to include all that now exists in the modern fields of telemetry and remote control. Modern progress has resulted in the need for new concepts to embrace two new branches of development. The first, Teletest, encompasses the new art of remote experimentation with its problems of multiple measurement and recording. The second, Telecontrol, refers to the science of control at a distance. The development of telemetry is reviewed and the distinguishing characteristics of the newer concepts are delineated. An interesting possible extension of Telecontrol to remote experimentation is pointed out. The recognition of the new concept of Telecontrol may stimulate progress in the field by unifying associated disciplines required to solve the newer problems. View full abstract»

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  • A survey of progress reported during 1955 in telemetry and remote control

    Publication Year: 1957 , Page(s): 9 - 13
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    Progress in the fields of telemetry and remote control reported during 1955 is summarized under the headings: Data processing, data storage, digital transmission equipment, millivolt telemeter equipment, multiplexing methods and equipment, radio transmission, remote control, theory and analysis, transducers, and transistorized telemeter equipment. The small proportion of it dealing with remote control is a reflection of the content of those technical sessions which have been sponsored by the IRE Professional Group on Telemetry and Remote Control. View full abstract»

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  • A note on the frequency distribution of an FM/FM signal

    Publication Year: 1957 , Page(s): 13 - 16
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    An approximate expression is derived giving the amplitude and phase of the individual frequency components of an fm/fm signal when the input is a sinusoid. The approximation is subject to the restrictions that the subcarrier frequency be large in comparison to the highest modulation frequency, and that the ratio of subcarrier deviation to subcarrier frequency be much less than unity. Some qualitative properties of the frequency spectrum are pointed out and discussed, and illustrations of representative single sub-carrier-frequency distribution are presented. Although subject to the above restrictions, the results are shown to be applicable to present day fm/fm telemetry techniques. View full abstract»

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  • The influence of coding on closed loop remote control systems

    Publication Year: 1957 , Page(s): 16 - 19
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    The effects of various simple coding methods on the stability of a remote control systems are discussed. It is shown that these methods create stability problems and require better observation. Command and observation channels requirements are compared and it is shown that a compensatory relationship between them exists. View full abstract»

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  • Noise and bandwidth in FM/FM radio telemetering

    Publication Year: 1957 , Page(s): 19 - 22
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    This paper discusses the derivation, limitations, and use of system equations relating input and output signal/noise ratios in fm detection with band-pass and with low-pass output filters and in fm/fm multiplex transmission. The fm/fm equation is: (S/N)D = (S/N)c (3/4)½ (fDC/fS) (fDS/FUD) where (S/N)D is the output (data voltage) rms signal/noise ratio, (S/N)C is the input (radio carrier channel) rms signal/noise ratio, BC is the input (radio carrier channel) bandwidth, FUD is the output (data voltage) low-pass filter bandwidth, fDC is the peak deviation of the carrier due to the subcarrier, fS is the center frequency of the frequency-modulated subcarrier, and fDS is the peak deviation of the subcarrier due to the data voltage (assumed a sine wave). View full abstract»

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  • System for rapid reduction of telemetric data

    Publication Year: 1957 , Page(s): 23 - 25
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    This paper describes automatic telemetric data reduction equipment being developed by the Instrumentation Division at the U. S. Naval Ordnance Laboratory, Corona, Calif., under joint sponsorship of the Navy Bureaus of Ordnance and Aeronautics. The design of some of the components has been completed and checked and will be described in detail in this report. The high-speed analog to digital converter is being procured from a commercial source. A high-capacity magnetic tape recorder is not currently available on the market for recording data at the maximum rate (30,000 samples per second) provided by other components of the system. It is expected that a suitable magnetic recorder will become available in the near future. View full abstract»

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  • Transistorized time multiplexer for telemetering

    Publication Year: 1957 , Page(s): 26 - 30
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    A transistorized time multiplexer or commutator is described with applications to telemetry. The unit develops a commutated PAM signal corresponding to the IRIG standard for time multiplexing of an fm/fm signal. The channel input impedance is 500 k ohms and the channel response is accurate to ±0.5 per cent of modulation range. The present unit includes 15 channels sampled 10 times per second, but channel switching rates up to at least 15 kc are feasible. Channel selection is achieved by two multivibrator rings operating a matrix of diode switches. The commutator consumes 1 watt from a single 45 volt supply, the accuracy being virtually unaffected by ±20 per cent change in supply voltage. The unit will operate satisfactorily with channel accuracy maintained at ±0.5 per cent and the commutating frequency changing less than 1 per cent in the temperature range 25°C. to 70°C. View full abstract»

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  • An automatic test set for FM/FM telemetry systems

    Publication Year: 1957 , Page(s): 30 - 34
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    Techniques of automation are applied to the problem of preflight check-out of airborne telemetry systems. The result is a test set that measures and analyzes key system parameters without operator participation. Operation of the subcarrier analyzer portion of the test set is described. Circuit details of pre-set binary counter chain, counter readout matrix, and GO/NO-GO voltmeter are given. An example of typical test set packaging is shown. View full abstract»

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  • [Advertisements]

    Publication Year: 1957 , Page(s): 1
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Aims & Scope

This Transactions ceased publication in 1958. The new retitled publication is IEEE Transactions on Aerospace and Electronic Systems.

Full Aims & Scope