Title :
Estimation of the total rotational velocity of a non-cooperative target using a 3D InISAR system
Author :
Hai-Tan Tran ; Giusti, Elisa ; Martorella, Marco ; Salvetti, Federica ; Ng, Brian W.-H ; An Phan
Author_Institution :
Defence Sci. & Technol. Organ., Edinburgh, SA, Australia
Abstract :
We report on a new technique for the estimation of the total rotational velocity of a non-cooperative target using a single interferometric ISAR system. It uses 3D interferometric ISAR techniques to obtain a first estimate of the scatterers´ positions and effective rotation vector. Then the second-order local polynomial Fourier transform (LPFT) is applied to estimate the second component of the total rotation vector, and therefore the total vector itself. The true three-dimensional size and shape of a target - an important metric for automatic target recognition - can thus be estimated. Cross-range resolution in the 2D ISAR images is also improved in the process.
Keywords :
Fourier transforms; radar interferometry; synthetic aperture radar; vectors; 3D InISAR system; LPFT; automatic target recognition; cross-range resolution; noncooperative target; rotation vector; second-order local polynomial Fourier transform; single interferometric ISAR system; three-dimensional size; total rotational velocity estimation; Chirp; Estimation; Imaging; Radar imaging; Signal to noise ratio; Three-dimensional displays;
Conference_Titel :
Radar Conference (RadarCon), 2015 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4799-8231-8
DOI :
10.1109/RADAR.2015.7131129
