TY - GEN
T1 - Focusing translational variant bistatic forward-looking SAR using extended nonlinear Chirp Scaling algorithm
AU - Wu, Junjie
AU - Li, Zhongyu
AU - Yang, Jianyu
AU - Huang, Yulin
AU - Liu, Qing Huo
PY - 2013
Y1 - 2013
N2 - With appropriate geometry configurations, bistatic Synthetic Aperture Radar (SAR) can break through the limitations of monostatic SAR for forward-looking imaging. This paper develops an extended nonlinear Chirp Scaling imaging algorithm for translational variant BFSAR. The method utilizes a point target reference spectrum of generalized Loffeld's bistatic formula (GLBF). Without bistatic deformation term, GLBF is the latest development of Loffeld's bistatic formula. After an azimuth frequency transformation in 2-D frequency domain, the azimuth spatial variation is removed. Then through a fourth-order frequency domain filtering, the algorithm can consider the quadratic variance term of the range frequency modulated rate and the linear term of the tertiary coupling phase term along cross-track direction. In addition, by a fourth-order nonlinear Chirp Scaling equalization operation, the algorithm can finish the correction of quadratic range cell migration in terms of range. The result of this paper can be used for forward-looking reconnaissance, guidance and so on.
AB - With appropriate geometry configurations, bistatic Synthetic Aperture Radar (SAR) can break through the limitations of monostatic SAR for forward-looking imaging. This paper develops an extended nonlinear Chirp Scaling imaging algorithm for translational variant BFSAR. The method utilizes a point target reference spectrum of generalized Loffeld's bistatic formula (GLBF). Without bistatic deformation term, GLBF is the latest development of Loffeld's bistatic formula. After an azimuth frequency transformation in 2-D frequency domain, the azimuth spatial variation is removed. Then through a fourth-order frequency domain filtering, the algorithm can consider the quadratic variance term of the range frequency modulated rate and the linear term of the tertiary coupling phase term along cross-track direction. In addition, by a fourth-order nonlinear Chirp Scaling equalization operation, the algorithm can finish the correction of quadratic range cell migration in terms of range. The result of this paper can be used for forward-looking reconnaissance, guidance and so on.
UR - https://www.scopus.com/pages/publications/84884822638
U2 - 10.1109/RADAR.2013.6586066
DO - 10.1109/RADAR.2013.6586066
M3 - 会议稿件
AN - SCOPUS:84884822638
SN - 9781467357920
T3 - IEEE National Radar Conference - Proceedings
BT - IEEE Radar Conference 2013
T2 - 2013 IEEE Radar Conference: "The Arctic - The New Frontier", RadarCon 2013
Y2 - 29 April 2013 through 3 May 2013
ER -