Title:
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Capon- and APES-based SAR processing: performance and practical considerations
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Author:
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López Dekker, Francisco J.; Mallorquí Franquet, Jordi Joan
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
Abstract:
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This paper discusses the use of Capon’s minimumvariance
method (MVM) and Amplitude and Phase EStimation
(APES) spectral-estimation algorithms to synthetic aperture radar
range–azimuth focusing. The rationale of the algorithms is discussed.
An implementation of a Capon or APES processing chain
is explained, and processing parameters such as chip-image size,
resampling factor, and diagonal loading are discussed. For multichannel
cases, a joint-processing approach is presented. A set
of Monte Carlo simulations are described and used to benchmark
Capon- and APES-based processing against conventional
matched-filter-based approaches. Both methods improve the resolution
and reduce sidelobes. APES yields generally better estimates
of amplitude and phase than Capon but with worse
resolution. Results with RADARSAT-2 quad-polarization data
over Barcelona are used to qualitatively study the real-life performance
of these algorithms. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació -Synthetic aperture radar -Signal theory (Telecommunication) -SAR (Synthetic Aperture Radar) -Enginyeria electrònica |
Rights:
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Document type:
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Article - Published version Article |
Published by:
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IEEE Press. Institute of Electrical and Electronics Engineers
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