Title :
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
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;
Conference_Titel :
Electrical Apparatus and Technologies (SIELA), 2014 18th International Symposium on
Conference_Location :
Bourgas
Print_ISBN :
978-1-4799-5816-0
DOI :
10.1109/SIELA.2014.6871868
