Title :
Imaging Algorithm of Missile-Borne MMW SAR For Ground Moving Target
Author :
Xie, Wenchong ; Wang, Yongliang
Author_Institution :
Wuhan Radar Acad., Wuhan
Abstract :
In this paper, firstly some main problems including the imaging resolution and choice of pulse repetition frequency (PRF) are discussed according to the imaging characteristics of missile-borne millimeter wave (MMW) synthetic aperture radar (SAR) for ground target. Secondly a new scheme of motion compensation which consists of range alignment, phase adjustment and compensation for the movement with non-uniform velocity is presented. Thirdly image reconstruction algorithm using superresolution spectrum estimation based on linear spectrum extrapolation technique is given. Finally the effect of maneuvering targets´ 3-dimensionaI (3D) rotation on the imaging quality of missile-borne MMW SAR is analyzed. The effectiveness and efficiency of utilizing the proposed imaging method and the effect of 3-D rotation are demonstrated by means of simulation results.
Keywords :
image reconstruction; image resolution; millimetre wave imaging; missile guidance; synthetic aperture radar; ground moving target; image reconstruction; imaging algorithm; imaging resolution; linear spectrum extrapolation; missile-borne MMW SAR; missile-borne millimeter wave; motion compensation; phase adjustment; pulse repetition frequency; superresolution spectrum estimation; synthetic aperture radar; Extrapolation; Frequency; Image analysis; Image reconstruction; Image resolution; Millimeter wave radar; Millimeter wave technology; Motion compensation; Spectral analysis; Synthetic aperture radar;
Conference_Titel :
Radar Conference, 2007 IEEE
Conference_Location :
Boston, MA
Print_ISBN :
1-4244-0284-0
Electronic_ISBN :
1097-5659
DOI :
10.1109/RADAR.2007.374278
