Point Spread Function Characterization of a Radially Displaced Scatterer Using Circular Synthetic Aperture Radar - Brossura

Majumder, Uttam K.

Brossura

ISBN 10: 1249608325 ISBN 13: 9781249608325

Casa editrice: LIGHTNING SOURCE INC, 2012

Riassunto

This research effort investigated characterizing the point spread function (PSF) behavior of radially displaced point scatterers using circular synthetic aperture radar (CSAR). For persistent staring radar applications utilizing CSAR for target recognition, it is important to know how a target's PSF behaves as a function of various radar functional parameters and different target positions. Thus far, research has been conducted to understand PSF of a scatterer located at the imaging scene center. An analytic closed-form solution has been derived assuming the scatterer is located at the origin of the CSAR imaging geometry. However, it is difficult to derive an analytic PSF solution for a scatterer that is radially displaced from the imaging scene center. Using the back projection image formation algorithm, PSF responses are generated at various point target locations. Consistent with previous studies, the three dimensional PSF for a point target located at the image center is cone shaped and serves as the basis for comparing and characterizing the PSFs of radially displaced scatterers. Simulated results show the impulse response of a radially displaced point scatterer is asymmetric and tends to exhibit increased ellipticity as it moves further from the scene center.

Dettagli dell'edizione

• Editore: LIGHTNING SOURCE INC
• Data di pubblicazione: 2012
• Lingua: Inglese
• ISBN 10: 1249608325
• ISBN 13: 9781249608325
• Rilegatura: Copertina flessibile
• Numero di pagine: 78
• Contatto del produttore: non disponibile
• Persona responsabile: non disponibile