Near-field-to-far-field transformation using wavenumber migration technique for a 3D spotlight SAR

Author

Woo, Jae-Choon ; Lim, Byoung-Gyun ; Lee, Sang-Min ; Yoo, Ji-Hee ; Kim, Young-Soo

Author_Institution

Dept. EE, Pohang Univ. of Sci. & Technol., Pohang, South Korea

fYear

2011

fDate

26-30 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, we present the method to obtain the far-field radar cross section (RCS) for a 3D spotlight synthetic aperture radar raw data. The far-field RCS is closely related to the Fourier transform of the reflectivity. We estimate this Fourier transform data using wavenumber migration with some amplitude compensation. This estimated Fourier transform data eventually yields the far-field RCS. The simulation results for some point targets show that the far-field RCS using the presented method is similar to the analytical values.

Keywords

Fourier transforms; radar cross-sections; synthetic aperture radar; 3D spotlight SAR; Fourier transform; RCS; near-field-to-far-field transformation; radar cross section; synthetic aperture radar; wavenumber migration; Antenna measurements; Azimuth; Fourier transforms; Radar cross section; Reflectivity; Synthetic aperture radar; Three dimensional displays; 3D spotlight SAR; far-field RCS;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on

Conference_Location

Seoul

Print_ISBN

978-1-4577-1351-4

Type

conf

Filename

6086967