Read e-book online Antenna Arraying Techniques in the Deep Space Network PDF

By David H. Rogstad, Alexander Mileant, Timothy T. Pham

ISBN-10: 0471467995

ISBN-13: 9780471467991

An creation to antenna Arraying within the Deep area community Antenna arraying is the combining of the output from a number of antennas with a purpose to enhance the signal-to-noise ratio (SNR) of the got sign. Now applied on the Goldstone advanced and different Deep area community (DSN) in another country amenities, antenna arraying presents versatile use of a number of antennas to extend facts premiums and has enabled NASA's DSN to increase the missions of a few spacecraft past their deliberate lifetimes. Antenna Arraying innovations within the Deep house community introduces the improvement and use of antenna arraying because it is applied within the DSN. Drawing at the paintings of scientists at JPL, this well timed quantity summarizes the improvement of antenna arraying and its historic history; describes key suggestions and strategies; analyzes and compares a number of tools of arraying; discusses a number of correlation concepts used for acquiring the mixed weights; offers the result of a number of arraying experiments; and indicates instructions for destiny paintings. a huge contribution to the clinical literature, Antenna Arraying concepts within the Deep area community * used to be commissioned by means of the JPL Deep house Communications and Navigation platforms (DESCANSO) middle of Excellence * Highlights many NASA-funded technical contributions bearing on deep area communications structures * is part of the distinguished JPL Deep house Communications and Navigation sequence The Deep area Communications and Navigation sequence is authored by means of scientists and engineers with broad event in astronautics, communications, and comparable fields. It lays the root for innovation within the components of deep house navigation and communications by means of disseminating state of the art wisdom in key applied sciences.

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Full-spectrum combining. Telemetry Receiver Overview of Arraying Techniques 27 and the cost to install fiber-optic cabling, this may or may not be a real disadvantage. 2 Complex-Symbol Combining (CSC) The block diagram of CSC is shown in Fig. 4-2. The intermediate frequency (IF) signal from each antenna is fed to a receiver, where it is openloop carrier tracked using the best available carrier predicts. If this tracking is kept within a frequency error much less than the symbol rate, it can then be subcarrier demodulated (if used), and then symbol synchronization (sync) can be performed.

Typically, for a given level of sparing or percentage of increase in the collecting aperture, a higher array availability is achieved in arrays with larger numbers of elements. This discussion demonstrates some of the advantages of a large array of smaller apertures in comparison with a small array (few elements) of larger apertures, in terms of providing a more gradual way of increasing the performance margin or, conversely, a more gradual degradation in case of 24 Chapter 3 element failure. Furthermore, since a higher array availability is achieved in arrays with larger numbers of elements (for a given margin or percentage of increase in the collecting aperture), the designer of a large array can trade off element reliability for cost, while still maintaining the same overall reliability as that of an array with a smaller number of elements with higher individual reliability.

J. Hurd and S. Aguirre, “A Method to Dramatically Improve Subcarrier Tracking,” The Telecommunications and Data Acquisition Progress Report 42-86, April–June 1986, Jet Propulsion Laboratory, Pasadena, California, pp. 103–110, August 15, 1986. gov/progress_report/ [3] M. K. Simon, “Analysis of the Steady State Phase Noise Performance of a Digital Data-Transition Tracking Loop,” Space Programs Summary 37-55, vol. 3, Jet Propulsion Laboratory, Pasadena, California, pp. 54–62, February 1969. Single-Receiver Performance 41 [4] R.

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Antenna Arraying Techniques in the Deep Space Network by David H. Rogstad, Alexander Mileant, Timothy T. Pham

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