TY - JOUR
T1 - Polar Format imaging algorithm based on range scaling for spotlight SAR
AU - Li, Chao
AU - Liu, Chang
AU - Gao, Xin
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2011/6/1
Y1 - 2011/6/1
N2 - There are two main problems through the implementation of Polar Format Algorithm (PFA). First, the error of Residual Video Phase (RVP) arises after the dechirp operation. Second, the interpolation has influence on the computation efficiency and imaging precision. This paper proposes a novel algorithm where range resampling is based on the principle of Scaling and Chirp-Z transform is adopted on azimuth dimension. The presented approach only consists in FFTs and multiplications, which effectively helps to decrease the computational burden and improve the imaging quality. Besides, the presented algorithm is much simpler than the existing range CZT approach. Point target simulation validates effectiveness of the presented algorithm.
AB - There are two main problems through the implementation of Polar Format Algorithm (PFA). First, the error of Residual Video Phase (RVP) arises after the dechirp operation. Second, the interpolation has influence on the computation efficiency and imaging precision. This paper proposes a novel algorithm where range resampling is based on the principle of Scaling and Chirp-Z transform is adopted on azimuth dimension. The presented approach only consists in FFTs and multiplications, which effectively helps to decrease the computational burden and improve the imaging quality. Besides, the presented algorithm is much simpler than the existing range CZT approach. Point target simulation validates effectiveness of the presented algorithm.
UR - http://jeit.ie.ac.cn/CN/10.3724/SP.J.1146.2010.01068
UR - http://www.scopus.com/inward/record.url?scp=79959887137&partnerID=8YFLogxK
U2 - 10.3724/SP.J.1146.2010.01068
DO - 10.3724/SP.J.1146.2010.01068
M3 - Article
SN - 1009-5896
VL - 33
SP - 1434
EP - 1439
JO - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
JF - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
IS - 6
ER -