Detection of Transient Signals in Doppler Spectra

Metadata Updated: August 28, 2014

Signal processing is used to detect transient signals in the presence of noise. Two embodiments are disclosed. In both embodiments, the time series from a remote sensor is broken into a number of short time series. The power spectrum of each short time series are then calculated along with the mean noise level. The moments of each peak in every power spectrum are calculated and the peak with the largest power selected from each power spectrum. A histogram of the moments from these selected peaks is generated and normalized to become a measured PDF. In addition, a pre-determined PDF is derived, in the same method as above, from theoretically calculated noise, numerically simulated noise, or measured noise. Comparison between the measured and pre-determined PDF's establish the detection of a transient signal. The first embodiment compares the area between the measured and pre-determined PDF's against a threshold to determine detection. In a second embodiment, the differences between the measured and pre-determined PDF's are weighted and summed to form a score. This score is compared to a threshold to determine detection.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date August 28, 2014
Metadata Updated Date August 28, 2014
Modified 2014-06-24

Metadata Source

Harvested from NOAA Patents Json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 28, 2014
Metadata Updated Date August 28, 2014
Publisher Department of Commerce
Identifier TT-000053
Maintainer
Derek Parks
Maintainer Email
Accesslevel public
Bureaucode 006:48
Harvest Object Id 25c4977d-3a16-4992-9fcd-1482fbc8d6f6
Harvest Source Id 32bb7250-22a0-47b3-97f2-bc8ac2fcd631
Harvest Source Title NOAA json
Modified 2014-06-24
Programcode 006:000
Source Datajson Identifier True
Source Hash 14e9c90ba97e1cf38eafbfdb286b8ab50fc7284c

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