PublisherIEEE Press. Institute of Electrical and Electronics Engineers
Rights accessOpen Access
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.
CitationLopez, F.; Mallorqui, J.J. Capon- and APES-based SAR processing: performance and practical considerations. "IEEE transactions on geoscience and remote sensing", Maig 2010, vol. 48, núm. 5, p. 2388-2402.
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