A method of improving quality of calculated image for large rotating angle

Author

Zhou, Jianjiang ; Zhu, Zhaoda ; Su, Yongze

Author_Institution

Dept. of Electron. Eng., Nanjing Univ. of Aeronaut. & Astronaut., China

Volume

2

fYear

1996

fDate

20-23 May 1996

Firstpage

767

Abstract

The present paper deals with the methods of modeling radar echo data of an object on a rotating platform with physical optics (PO) method in the case of large rotating angle. The echo data are directly calculated in Cartesian coordinate system of spatial frequency and processed with two-dimensional fast Fourier transform (2D-FFT) to obtain the image of the object. The quality of the resulting image is much better than images obtained using the data calculated in polar coordinate system and interpolated to the Cartesian coordinate distribution before performing 2D-FFT

Keywords

anechoic chambers; fast Fourier transforms; microwave imaging; physical optics; radar cross-sections; radar imaging; Cartesian coordinate system; image quality; physical optics method; radar echo data; rotating angle; spatial frequency; two-dimensional fast Fourier transform; Anechoic chambers; Diffraction; Frequency; Magnetic analysis; Microwave imaging; Optical scattering; Optical surface waves; Physical optics; Radar imaging; Radar scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace and Electronics Conference, 1996. NAECON 1996., Proceedings of the IEEE 1996 National

Conference_Location

Dayton, OH

ISSN

0547-3578

Print_ISBN

0-7803-3306-3

Type

conf

DOI

10.1109/NAECON.1996.517737

Filename

517737