Transionospheric signal detection with chirped wavelets

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Chirped wavelets are utilized to detect dispersed signals in the joint time scale domain. Specifically, pulses that become dispersed by transmission through the ionosphere and are received by satellites as nonlinear chirps are investigated. Since the dispersion greatly lowers the signal to noise ratios, it is difficult to isolate the signals in the time domain. Satellite data are examined with discrete wavelet expansions. Detection is accomplished via a template matching threshold scheme. Quantitative experimental results demonstrate that the chirped wavelet detection scheme is successful in detecting the transionospheric pulses at very low signal to noise ratios.

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6 p.

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Doser, A.B. & Dunham, M.E. November 1, 1997.

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Description

Chirped wavelets are utilized to detect dispersed signals in the joint time scale domain. Specifically, pulses that become dispersed by transmission through the ionosphere and are received by satellites as nonlinear chirps are investigated. Since the dispersion greatly lowers the signal to noise ratios, it is difficult to isolate the signals in the time domain. Satellite data are examined with discrete wavelet expansions. Detection is accomplished via a template matching threshold scheme. Quantitative experimental results demonstrate that the chirped wavelet detection scheme is successful in detecting the transionospheric pulses at very low signal to noise ratios.

Physical Description

6 p.

Notes

OSTI as DE97008165

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  • Asilomar conference, Monterey, CA (United States), 2-5 Nov 1997

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  • Other: DE97008165
  • Report No.: LA-UR--97-1855
  • Report No.: CONF-971154--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 627440
  • Archival Resource Key: ark:/67531/metadc696410

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  • November 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 21, 2016, 10:29 p.m.

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Doser, A.B. & Dunham, M.E. Transionospheric signal detection with chirped wavelets, article, November 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc696410/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.