TY - GEN
T1 - Non-stationary clutter suppression approach based on cascading cancellation for bistatic forward-looking SAR
AU - Liu, Zhutian
AU - Yu, Huaiqin
AU - Li, Zhongyu
AU - Wu, Junjie
AU - Huang, Yulin
AU - Yang, Jianyu
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - Clutter suppression in synthetic aperture radar (SAR) is an attractive but challenging problem in SAR applications. When it comes to the Bistatic forward-looking SAR (BFSAR), the strong ground clutter is range-dependent, Doppler ambiguous and it will migrate multiple range and Doppler cells due to the system features, which vastly aggravate the difficulty of ground clutter suppression. In this paper, a non-stationary Clutter Suppression approach based on Cascading Cancellation for BFSAR is proposed. This approach is based on cascading the clutter cancellation in space-time domain and image domain. First, the Doppler ambiguity and range cell migration will be eliminated via deramp filtering and keystone transform, respectively. Then, the non-stationary clutter can be first suppressed in space-time domain via time-division spacetime adaptive processing (TD-STAP), which removes the effect of Doppler cell migration. Finally, the residual clutter can be further suppressed in image domain via displaced phase center antenna (DPCA) based on keystone-back projection (KBP). Simulations are given to verify the effectiveness of the proposed approach.
AB - Clutter suppression in synthetic aperture radar (SAR) is an attractive but challenging problem in SAR applications. When it comes to the Bistatic forward-looking SAR (BFSAR), the strong ground clutter is range-dependent, Doppler ambiguous and it will migrate multiple range and Doppler cells due to the system features, which vastly aggravate the difficulty of ground clutter suppression. In this paper, a non-stationary Clutter Suppression approach based on Cascading Cancellation for BFSAR is proposed. This approach is based on cascading the clutter cancellation in space-time domain and image domain. First, the Doppler ambiguity and range cell migration will be eliminated via deramp filtering and keystone transform, respectively. Then, the non-stationary clutter can be first suppressed in space-time domain via time-division spacetime adaptive processing (TD-STAP), which removes the effect of Doppler cell migration. Finally, the residual clutter can be further suppressed in image domain via displaced phase center antenna (DPCA) based on keystone-back projection (KBP). Simulations are given to verify the effectiveness of the proposed approach.
KW - Bistatic forward-looking SAR
KW - Cascading cancellation
KW - Clutter suppression
UR - https://www.scopus.com/pages/publications/85073117368
U2 - 10.1109/RADAR.2019.8835707
DO - 10.1109/RADAR.2019.8835707
M3 - 会议稿件
AN - SCOPUS:85073117368
T3 - 2019 IEEE Radar Conference, RadarConf 2019
BT - 2019 IEEE Radar Conference, RadarConf 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE Radar Conference, RadarConf 2019
Y2 - 22 April 2019 through 26 April 2019
ER -