SAR triangle CW LFM signal formation and imaging

Author

Lazarov, Aleksandar ; Minchev, Dimtar ; Kostadinov, Todor

Author_Institution

Inf. & Tech. Sci. Dept., Burgas Free Univ., Burgas, Bulgaria

fYear

2014

fDate

29-31 May 2014

Firstpage

1

Lastpage

6

Abstract

Synthetic Aperture Radar (SAR) with triangle Linear Frequency Modulated (LFM) Continuous Wave (CW) is considered. Algorithms for signal formation and image reconstruction of a moving target are suggested. Three-dimensional (3-D) SAR geometry of the target presented as an assembly of point scatterers is analytically described. Mathematical expressions for distance vector determination defined from SAR to each point scatterer are derived. SAR signal model based on a triangle linear frequency modulated continuous wave emitted signal, 3-D geometry and reflectivity function of the target is derived. Image reconstruction procedure based on Fourier transform for range compression and azimuth compression is applied. SAR imaging algorithm of a moving target is suggested. Numerical experiment is carried out.

Keywords

CW radar; FM radar; Fourier transforms; electromagnetic wave scattering; image reconstruction; radar imaging; synthetic aperture radar; 3D SAR geometry; Fourier transform; SAR imaging algorithm; SAR signal model; azimuth compression; distance vector determination; image reconstruction; point scatterer; range compression; reflectivity function; synthetic aperture radar; triangle CW LFM signal formation; triangle linear frequency modulated continuous wave emitted signal; Azimuth; Fourier transforms; Frequency modulation; Geometry; Image reconstruction; Synthetic aperture radar; Vectors; CW LFM signal; SAR; SAR image reconstruction;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Apparatus and Technologies (SIELA), 2014 18th International Symposium on

Conference_Location

Bourgas

Print_ISBN

978-1-4799-5816-0

Type

conf

DOI

10.1109/SIELA.2014.6871868

Filename

6871868