Title :
Study on imaging algorithm of missile-borne MMW SAR for ground target
Author :
Xie, Wenchong ; Sun, Wenfeng ; Wang, Yongliang
Author_Institution :
Key Res. Lab, Wuhan Radar Acad., Hubei, China
Abstract :
In this paper, in light of the imaging characteristics of missile-borne MMW spotlight SAR for ground target, some main problems including the imaging resolution and choice of pulse repetition frequency are discussed. Then a new scheme of motion compensation which consists of range alignment, phase adjustment and compensation for the movement with non-constant velocity is presented. Image reconstruction algorithm by using superresolution spectrum estimation is given based on linear spectrum extrapolation technique. Finally the simulation results prove its effectivity.
Keywords :
image reconstruction; image resolution; military radar; millimetre wave imaging; missiles; motion compensation; radar imaging; radar resolution; synthetic aperture radar; ground target; image reconstruction algorithm; imaging algorithm; imaging resolution; missile motion; missile-borne MMW SAR; motion compensation; phase adjustment; phase compensation; pulse repetition frequency; range alignment; spectrum extrapolation technique; superresolution spectrum estimation; synthetic aperture radar; target motion; High-resolution imaging; Image resolution; Missiles; Motion compensation; Radar antennas; Radar imaging; Radar tracking; Signal processing algorithms; Synthetic aperture radar; Target tracking;
Conference_Titel :
Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7750-8
DOI :
10.1109/ICIP.2003.1247426
