A hardware implementation of multiresolution filtering for broadband instrumentation

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The authors have constructed a wavelet processing board that implements a 14-level wavelet transform. The board uses a high-speed, analog-to-digital (A/D) converter, a hardware queue, and five fixed-point digital signal processing (DSP) chips in a parallel pipeline architecture. All five processors are independently programmable. The board is designed as a general purpose engine for instrumentation applications requiring near real-time wavelet processing or multiscale filtering. The present application is the processing engine of a magnetic field monitor that covers 305 Hz through 5 MHz. The monitor is used for the detection of peak values of magnetic fields in nuclear power plants. ... continued below

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16 p.

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Kercel, S. W. & Dress, W. B. December 1995.

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Description

The authors have constructed a wavelet processing board that implements a 14-level wavelet transform. The board uses a high-speed, analog-to-digital (A/D) converter, a hardware queue, and five fixed-point digital signal processing (DSP) chips in a parallel pipeline architecture. All five processors are independently programmable. The board is designed as a general purpose engine for instrumentation applications requiring near real-time wavelet processing or multiscale filtering. The present application is the processing engine of a magnetic field monitor that covers 305 Hz through 5 MHz. The monitor is used for the detection of peak values of magnetic fields in nuclear power plants. This paper describes the design, development, simulation, and testing of the system. Specific issues include the conditioning of real-world signals for wavelet processing, practical trade-offs between queue length and filter length, selection of filter coefficients, simulation of a 14-octave filter bank, and limitations imposed by a fixed-point processor. Test results from the completed wavelet board are included.

Physical Description

16 p.

Notes

OSTI as DE96003032

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  • SPIE international symposium on aerospace/defense sensing and dual-use photonics, Orlando, FL (United States), 17-21 Apr 1995

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  • Other: DE96003032
  • Report No.: CONF-950472--23
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 164469
  • Archival Resource Key: ark:/67531/metadc620811

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 1995

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  • June 16, 2015, 7:43 a.m.

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  • Oct. 3, 2017, 4:28 p.m.

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Kercel, S. W. & Dress, W. B. A hardware implementation of multiresolution filtering for broadband instrumentation, article, December 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc620811/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.