TY - GEN
T1 - An improved scatter selection method for phase gradient autofocus algorithm in SAR/ISAR autofocus
AU - Fu, Tuo
AU - Gao, Meiguo
AU - He, Yuan
PY - 2003
Y1 - 2003
N2 - The phase gradient autofocus (PGA) is a state of art technique for phase error correction of synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR). It exploits the redundancy of phase error information among range bins by selecting the strongest scatter for each range bin and then synthesizes them. The motivation of this paper is based on the observation that the redundancy of phase error information is also among the cross-range (azimuth) direction in the image domain. A new scatter selection scheme is proposed to better utilize the phase error information contained in the image. The validity of our new prominent scatters selection method for PGA algorithm is theoretically analyzed and tested with some numeral simulation. It shows that a faster convergence speed can be obtained by our new method.
AB - The phase gradient autofocus (PGA) is a state of art technique for phase error correction of synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR). It exploits the redundancy of phase error information among range bins by selecting the strongest scatter for each range bin and then synthesizes them. The motivation of this paper is based on the observation that the redundancy of phase error information is also among the cross-range (azimuth) direction in the image domain. A new scatter selection scheme is proposed to better utilize the phase error information contained in the image. The validity of our new prominent scatters selection method for PGA algorithm is theoretically analyzed and tested with some numeral simulation. It shows that a faster convergence speed can be obtained by our new method.
UR - http://www.scopus.com/inward/record.url?scp=34547243092&partnerID=8YFLogxK
U2 - 10.1109/ICNNSP.2003.1281050
DO - 10.1109/ICNNSP.2003.1281050
M3 - Conference contribution
AN - SCOPUS:34547243092
SN - 0780377028
SN - 9780780377028
T3 - Proceedings of 2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
SP - 1054
EP - 1057
BT - Proceedings of 2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
T2 - 2003 International Conference on Neural Networks and Signal Processing, ICNNSP'03
Y2 - 14 December 2003 through 17 December 2003
ER -