Cross-range scaling of interferometric ISAR based on Randomized Hough Transform

Author

Fei, Li ; Bo, Jiu ; Hong-wei, Liu ; Bo, Feng

Author_Institution

Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China

fYear

2011

fDate

14-16 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

The conventional ISAR image is a two-dimensional (2D) projection of a three-dimensional (3-D) object surface, and the image scale in the cross range direction can not be determined by the traditional ISAR system unless the target motion knowledge is known. To deal with the scaling of ISAR image and phase wrapping in interferometric ISAR, a novel cross-range scaling algorithm of interferometric ISAR based on Randomized Hough Transform is proposed. By using the wrapped interferometric phases of the dominant scatters, this algorithm can accurately estimate the scale factor between the cross range and Doppler frequency, consequently avoiding the complex phase unwrapping procedure.

Keywords

Doppler radar; Hough transforms; radar imaging; synthetic aperture radar; Doppler frequency; ISAR image; complex phase unwrapping procedure; cross range direction; cross-range scaling; dominant scatters; image scale; interferometric ISAR; randomized Hough transform; scale factor; target motion knowledge; three-dimensional object surface; two-dimensional projection; wrapped interferometric phase; Azimuth; Doppler effect; Frequency estimation; Imaging; Receiving antennas; Transforms; cross-range scaling; interferometric ISAR; phase wrapping; randomized hough transform (RHT);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, Communications and Computing (ICSPCC), 2011 IEEE International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4577-0893-0

Type

conf

DOI

10.1109/ICSPCC.2011.6061793

Filename

6061793