TY - GEN
T1 - Signal modelling for ground moving target in complex image domain of multi-channel SAR
AU - Xu, Jia
AU - Zuoi, Yu
AU - Xia, Bing
AU - Xia, Xiang Gen
AU - Peng, Ying Ning
AU - Wang, Yong Liang
PY - 2010
Y1 - 2010
N2 - For along-track multi-channel synthetic aperture radar (SAR), this paper proposes a novel ground moving target signal model in the high-resolution complex image domain. It is shown that moving targets can be divided into three types according to the 2D motion distribution and the SPP approximation conditions. Moreover, a single target can be split into two targets in the image. All types of targets will have the same Doppler interferometric effect along multichannel images, which is decided by the target's ambiguous Doppler frequency. Furthermore, with our derived signal model, the complex image properties, i.e., amplitude reduction, azimuth shift, azimuth defocus, range blur, 2D slant, second-order phase modulation, split, interferometry and the effects of 2D accelerations are analyzed for airborne and spaceborne SAR, respectively. Finally, some experimental results are also provided to demonstrate the effectiveness of the proposed signal model and analysis.
AB - For along-track multi-channel synthetic aperture radar (SAR), this paper proposes a novel ground moving target signal model in the high-resolution complex image domain. It is shown that moving targets can be divided into three types according to the 2D motion distribution and the SPP approximation conditions. Moreover, a single target can be split into two targets in the image. All types of targets will have the same Doppler interferometric effect along multichannel images, which is decided by the target's ambiguous Doppler frequency. Furthermore, with our derived signal model, the complex image properties, i.e., amplitude reduction, azimuth shift, azimuth defocus, range blur, 2D slant, second-order phase modulation, split, interferometry and the effects of 2D accelerations are analyzed for airborne and spaceborne SAR, respectively. Finally, some experimental results are also provided to demonstrate the effectiveness of the proposed signal model and analysis.
KW - Azimuth defocus
KW - Azimuth shift
KW - Doppler ambiguity
KW - Interferometry
KW - Multi-channel synthetic aperture radar (SAR)
KW - Range blur
KW - Split
UR - http://www.scopus.com/inward/record.url?scp=77954937882&partnerID=8YFLogxK
U2 - 10.1109/RADAR.2010.5494579
DO - 10.1109/RADAR.2010.5494579
M3 - Conference contribution
AN - SCOPUS:77954937882
SN - 9781424458127
T3 - IEEE National Radar Conference - Proceedings
SP - 441
EP - 445
BT - 2010 IEEE Radar Conference
T2 - IEEE International Radar Conference 2010, RADAR 2010
Y2 - 10 May 2010 through 14 May 2010
ER -