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Download A New Target Detector Based on Geometrical Perturbation by Armando Marino PDF

By Armando Marino

This thesis offers a groundbraking technique for the radar foreign neighborhood. The detection strategy brought, particularly perturbation research, is completey novel displaying a impressive power of pondering outdoor the field. Perturbation research is ready to push ahead the functionality limits of present algorithms, permitting the detection of objectives smaller than the answer cellphone and hugely embedded in litter. The technique itself is remarkable flexibe and has already been utilized in different huge initiatives, funded by means of the ESA (European house Agency): M-POL for maritime surveillance, and DRAGON-2 for land class with specific awareness to forests. This e-book is a superbly organised piece of labor the place each element and standpoint is considered with a purpose to supply a accomplished imaginative and prescient of the issues and solutions.

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Additional resources for A New Target Detector Based on Geometrical Perturbation Filters for Polarimetric Synthetic Aperture Radar (POL-SAR)

Example text

With the intention of achieving high resolution without decreasing the pulse duration, a frequency modulation was introduced (Curlander and McDonough 1991). The obtained pulse is called a chirp and is a linear frequency modulation of the narrowband pulse. It can be written as:   hti at2 ð2:3Þ rect ; f ðtÞ ¼ cos xt þ s 2 12 2 Synthetic Aperture Radar where x ¼ 2pf is the angular frequency and f is the carrier frequency, rect is the rectangular function of duration s and a is the chirp rate related with the bandwidth W as as ¼ 2pW.

Waves Random Complex Media 14:393–414 Curlander JC, Mcdonough RN (1991) Synthetic aperture radar: systems and signal processing. Wiley, New York Franceschetti G, Lanari R (1999) Synthetic aperture radar processing. CRC Press, Boca Raton Gray RM, Davisson LD (2004) An introduction on statistical signal processing. Cambridge University Press, Cambridge Herwig O (1992) Radiometric calibration of SAR systems. In: fundamentals and special problems of synthetic aperture radar (SAR), AGARD Lecture Series, Vol 182 Huynen JR (1970) Phenomenological theory of radar targets.

7 states the importance of side-looking architecture for image formation. 3 shows the lines for equi-range and equi-Doppler (Mott 2007). The only way to avoid ambiguities between the two points above and below the yg axis is simply to focus the antenna only on one side. Although indispensable for image formation, side looking is the cause of distortions in a SAR image. 4 presents the main distortions suffered by a radar image due to the side-looking architecture. The distortions are (Franceschetti and Lanari 1999): a.

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