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On the usage of GRECOSAR: an orbital polarimetric SAR simulator of complex targets for vessel classification studies
Margarit Martín, Gerard; Mallorquí Franquet, Jordi Joan; Rius Casals, Juan Manuel; Sanz Marcos, Jesús
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio
This paper presents a synthetic aperture radar (SAR) simulator that is able to generate polarimetric SAR (POLSAR) and polarimetric inverse SAR data of complex targets. It solves the electromagnetic problem via high-frequency approximations, such as physical optics and the physical theory of diffraction, with notable computational efficiency. In principle, any orbital monostatic sensor working at any band, resolution, and operating mode can be modeled. To make simulations more realistic, the target’s bearing and speed are considered, and for the particular case of vessels, even the translational and rotational movements induced by the sea state. All these capabilities make the simulator a powerful tool for supplying large amounts of data with precise scenario information and for testing future sensor configurations. In this paper, the usefulness of the simulator on vessel classification studies is assessed. Several simulated polarimetric images are presented to analyze the potentialities of coherent target decompositions for classifying complex geometries, thus basing an operational algorithm. The limitations highlighted by the results suggest that other approaches, like POLSAR interferometry, should be explored.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
Àrees temàtiques de la UPC::Nàutica::Navegació marítima::Instrumentació i equipament per a la navegació
Radar simulators
Image reconstruction Data processing.
GRECOSAR
Graphical electromagnetic computation SAR
Complex geometry classification
Coherent target decompositions (CTD)
Image classification
Orbital monostatic sensor
Polarimetric inverse SAR
Polarimetric SAR
Physical theory of diffraction
Radar polarimetry
Remote sensing by radar
SAR simulations
Sea state
Sensor configurations
Ships
POLSAR interferometry
Physical optics
Simuladors de radar
Imatge -- Processament -- Tècniques digitals
SAR (Synthetic Aperture Radar)
Artículo
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
         

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