ISAR imaging of the ship target at sea

Author

Lazarov, Andon D. ; Minchev, Chavdar N.

Author_Institution

Bourgas Free Univ., Bulgaria

Volume

2

fYear

2005

fDate

30 Oct.-3 Nov. 2005

Abstract

In this work, a generalized ISAR approach to solve the SAR problem for image reconstruction and ship target recognition is suggested. A new coordinate definition of the 3D SAR scenario is addressed. An analytical geometrical approach to define apparent Yaw, Pitch and Roll angle of the ship target at sea is implemented. Mathematical expressions to determine slant range distance are derived. The model of the SAR signal return is composed by a linear frequency modulated transmitted signal, geometry and reflectivity properties of sparkling points of the object. Image reconstruction procedure includes correlation range compression and fast Fourier transform azimuth compression. To verify the new ISAR image reconstruction concept with respect to SAR problem a numerical experiment is carried out.

Keywords

FM radar; airborne radar; data compression; fast Fourier transforms; image reconstruction; radar imaging; radar target recognition; ships; synthetic aperture radar; 3D SAR coordinate definition; ISAR image reconstruction; ISAR imaging; SAR signal return model; analytical geometrical approach; correlation range compression; fast Fourier transform azimuth compression; linear frequency modulation; pitch; roll angle; ship target recognition; slant range distance; yaw; Chirp modulation; Fast Fourier transforms; Frequency modulation; Geometry; Image coding; Image reconstruction; Marine vehicles; Reflectivity; Solid modeling; Target recognition;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Avionics Systems Conference, 2005. DASC 2005. The 24th

Print_ISBN

0-7803-9307-4

Type

conf

DOI

10.1109/DASC.2005.1563449

Filename

1563449