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Prediction Of The Far Field Beam Pattern Of A Random Noise Source From Measurements Made In The Near Field. by Trelles Sanchez%2c Jorge

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1Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.

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ADA035850

“Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.” Metadata:

  • Title: ➤  Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.
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  • Language: en_US,eng

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The book is available for download in "texts" format, the size of the file-s is: 38.66 Mbs, the file-s for this book were downloaded 114 times, the file-s went public at Sun Oct 04 2015.

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2Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.

By

ADA035850

“Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.” Metadata:

  • Title: ➤  Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.
  • Author:
  • Language: en_US

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The book is available for download in "texts" format, the size of the file-s is: 103.57 Mbs, the file-s for this book were downloaded 324 times, the file-s went public at Thu Aug 09 2012.

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3DTIC ADA035850: Prediction Of The Far-Field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-Field.

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A theory is presented for computing the far field beam patterns from distributed random noise sources. The theoretical model uses the Green's Function for the wave equation and the space-time autocorrelation function for determining the radiation from a randomly vibrating area. The actual far field beam pattern of a horn speaker in an anechoic chamber was obtained, and also near field measurements were taken to obtain the correlation distance and the mean square of the particle velocity using the autocorrelation function. Finally a computer program was written to evaluate the integral wave equation by numerical methods. It was found that the critical parameters in the mathematical model were the correlation distance and the frequency limits of integration. Small variations in the correlation distance modified greatly the width of the predicted beam pattern, while changes in the limits of integration had a moderate effect. The Frequency Spectrum was obtained in the anechoic chamber and it was used to determine the limits of integration of the integral solution for the intensity field.

“DTIC ADA035850: Prediction Of The Far-Field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-Field.” Metadata:

  • Title: ➤  DTIC ADA035850: Prediction Of The Far-Field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-Field.
  • Author: ➤  
  • Language: English

“DTIC ADA035850: Prediction Of The Far-Field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-Field.” Subjects and Themes:

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The book is available for download in "texts" format, the size of the file-s is: 37.70 Mbs, the file-s for this book were downloaded 109 times, the file-s went public at Mon Dec 28 2015.

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4Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.

By

A theory is presented for computing the far field beam patterns from distributed random noise sources. The theoretical model uses the Green's Function for the wave equation and the space-time autocorrelation function for determining the radiation from a randomly vibrating area. The actual far field beam pattern of a horn speaker in an anechoic chamber was obtained, and also near field measurements were taken to obtain the correlation distance and the mean square of the particle velocity using the autocorrelation function. Finally a computer program was written to evaluate the integral wave equation by numerical methods. It was found that the critical parameters in the mathematical model were the correlation distance and the frequency limits of integration. Small variations in the correlation distance modified greatly the width of the predicted beam pattern, while changes in the limits of integration had a moderate effect. The Frequency Spectrum was obtained in the anechoic chamber and it was used to determine the limits of integration of the integral solution for the intensity field.

“Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.” Metadata:

  • Title: ➤  Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.
  • Author:
  • Language: English

“Prediction Of The Far-field Beam Pattern Of A Random Noise Source From Measurements Made In The Near-field.” Subjects and Themes:

Edition Identifiers:

Downloads Information:

The book is available for download in "texts" format, the size of the file-s is: 752.50 Mbs, the file-s for this book were downloaded 137 times, the file-s went public at Thu Nov 19 2020.

Available formats:
Abbyy GZ - Archive BitTorrent - DjVuTXT - Djvu XML - Item Tile - Metadata - OCR Page Index - OCR Search Text - Page Numbers JSON - Scandata - Single Page Processed JP2 ZIP - Text PDF - chOCR - hOCR -

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