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Extraction of waveguide scattering features using joint time-frequency ISAR

A new joint time-frequency ISAR algorithm that combines the conventional ISAR processing with the joint time-frequency signal representation is presented. The adaptive spectrogram, applied to the range axis of the ISAR image, is used as the time-frequency processing engine. The algorithm is tested u...

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Published in:	IEEE microwave and guided wave letters 1996-01, Vol.6 (1), p.10-12
Main Authors:	Trintinalia, L.C., Hao Ling
Format:	Article
Language:	English
Subjects:	Airplanes Applied sciences Cutoff frequency Data mining Engines Exact sciences and technology Feature extraction Radiolocalization and radionavigation Scattering Signal representations Spectrogram Telecommunications Telecommunications and information theory Testing Time frequency analysis
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container_title	IEEE microwave and guided wave letters
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creator	Trintinalia, L.C. Hao Ling
description	A new joint time-frequency ISAR algorithm that combines the conventional ISAR processing with the joint time-frequency signal representation is presented. The adaptive spectrogram, applied to the range axis of the ISAR image, is used as the time-frequency processing engine. The algorithm is tested using the chamber measurement data from a scale model airplane. The results show that the nonpoint scattering mechanisms due to the waveguide-like engine inlet can be seamlessly removed, leading to an enhanced ISAR image consisting only of point scatterers. Furthermore, the extracted inlet features are displayed in the frequency-aspect plane and show distinct waveguide cutoff features.
doi_str_mv	10.1109/75.482055
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The adaptive spectrogram, applied to the range axis of the ISAR image, is used as the time-frequency processing engine. The algorithm is tested using the chamber measurement data from a scale model airplane. The results show that the nonpoint scattering mechanisms due to the waveguide-like engine inlet can be seamlessly removed, leading to an enhanced ISAR image consisting only of point scatterers. Furthermore, the extracted inlet features are displayed in the frequency-aspect plane and show distinct waveguide cutoff features.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/75.482055</doi><tpages>3</tpages></addata></record>
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source	IEEE Electronic Library (IEL) Journals
subjects	Airplanes Applied sciences Cutoff frequency Data mining Engines Exact sciences and technology Feature extraction Radiolocalization and radionavigation Scattering Signal representations Spectrogram Telecommunications Telecommunications and information theory Testing Time frequency analysis
title	Extraction of waveguide scattering features using joint time-frequency ISAR
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