49,846 research outputs found

    Mariner Mars 1964 telecommunication system

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    Radio, telemetry, and command subsystems of Mariner IV telecommunication syste

    Fish tracking technology development. Phase 1 project definition desk study

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    The document reports on Phase 1 of a definition study to appraise the options to develop fish tracking equipment, in particular tags and data logging systems in order to improve the efficiency of the Environment Agency's tracking studies and to obtain a greater understanding of fish biology. Covered in this report are radio telemetry, audio telemetry, High Resolution Position Fixing, data storage and archival tags and other fish tracking systems such as biosonics

    Thin-Film Personal Communications and Telemetry System /TFPCTS/, phase C Quarterly report, Sep. 24 - Dec. 24, 1967

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    Assembly and development of radio frequency portions of transmitter and receiver in thin film personal communications and telemetry syste

    Long distance tracking of birds

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    The application of radio telemetry techniques to the long distance tracking of birds is discussed. The types of equipment developed and methods for attachment to a bird are described. The operating range of the radio transmitter receiver system is examined, and methods for acquiring and analyzing the data are explained

    Radio telemetry devices to monitor breathing in non-sedated animals

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    Radio telemetry equipment has significantly improved over the last 10-15 years and is increasingly being used in research for monitoring a variety of physiological parameters in non-sedated animals. The aim of this review is to provide an update on the current state of development of radio telemetry for recording respiration. Our literature review found only rare reports of respiratory studies via radio telemetry. Much of this article will hence report our experience with our custom-built radio telemetry devices designed for recording respiratory signals, together with numerous other physiological signals in lambs. Our current radio telemetry system allows to record 24 simultaneous signals 24h/day for several days. To our knowledge, this is the highest number of physiological signals, which can be recorded wirelessly. Our devices have been invaluable for studying respiration in our ovine models of preterm birth, reflux laryngitis, postnatal exposure to cigarette smoke, respiratory syncytial virus infection and nasal ventilation, all of which are relevant to neonatal respiratory problems

    Quantitative measurement by telemetry of ovulation and oviposition in the fowl

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    Radio telemetry used to determine body temperature cycles in fowl and its relation to ovulation and ovipositio

    Performance of the image statistics decoder in conjunction with the Goldstone-VLA array

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    During Voyager's Neptune encounter, the National Radio Astronomy Observatory's Very Large Array (VLA) will be arrayed with Goldstone antennas to receive the transmitted telemetry data from the spacecraft. The telemetry signal from the VLA will drop out periodically, resulting in a periodic drop in the received signal-to-noise ratio (SNR). The Image Statistics Decoder (ISD), which assumes a correlation between pixels, can improve the bit error rate (BER) for images during these dropout periods. Simulation results have shown that the ISD, in conjunction with the Goldstone-VLA array can provide a 3-dB gain for uncompressed images at a BER of 5.0 x 10(exp -3)

    Thermometer Telementri System Using Radio Communication Unit as Handheld Transmitter

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    Radio Telemetry System was a system that serves to send a certain data from oneplace to another a distance away, using the radio wave transmission media.Remote temperature measurement (Telemetry Temperature) allows us to performmeasurements in inaccessible places or in areas dangerous to humans if directmeasurements of the area. One alternative to overcome this is to use radio telemetry.This transmitter system composed of several sub sections of the sensor, voltage tofrequency converters, and transmitter. The sensor converts the temperature scale tothe level voltage output is then compared to the voltage to frequency converter circuitwhich functions to change the sensor output voltage to the frequency scale.Modulated output to the transmitter circuit
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