TY - GEN
T1 - AN ADAPTIVE MOVING TARGET INDICATION METHOD FOR GEO SPACEBORNEAIRBORNE BISTATIC SAR
AU - Cui, Chang
AU - Dong, Xichao
AU - Hu, Cheng
AU - Tian, Weiming
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - A long aperture time is required to achieve a high signal-to-noise ratio and high azimuth resolution in geosynchronous spaceborne-airborne bistatic synthetic aperture radar (GEO SA-BSAR) system for moving target indication (MTI). The range walk migration because of the target's motion cannot be ignored for such a long time, and the second-order range model fails for the moving target. In this paper, an adaptive MTI method is proposed for GEO SA-BSAR with a long aperture time, ensuring the moving target's detection and location. Firstly, an adaptive spatial filter modified by the accurate GEO SA-BSAR multichannel signal model is applied to clutter suppression and beamforming. Next, we adopt the generalized Radon-Fourier transform to maximize the signal-to-noise ratio of the moving target with unknown motion parameters. Then, the moving target can be detected, and its position has been obtained. Finally, the simulation experiments are conducted to show the effectiveness of our technique.
AB - A long aperture time is required to achieve a high signal-to-noise ratio and high azimuth resolution in geosynchronous spaceborne-airborne bistatic synthetic aperture radar (GEO SA-BSAR) system for moving target indication (MTI). The range walk migration because of the target's motion cannot be ignored for such a long time, and the second-order range model fails for the moving target. In this paper, an adaptive MTI method is proposed for GEO SA-BSAR with a long aperture time, ensuring the moving target's detection and location. Firstly, an adaptive spatial filter modified by the accurate GEO SA-BSAR multichannel signal model is applied to clutter suppression and beamforming. Next, we adopt the generalized Radon-Fourier transform to maximize the signal-to-noise ratio of the moving target with unknown motion parameters. Then, the moving target can be detected, and its position has been obtained. Finally, the simulation experiments are conducted to show the effectiveness of our technique.
KW - Bistatic SAR
KW - Generalized Radon-Fourier transform (GRFT)
KW - Geosynchronous synthetic aperture radar (GEO SAR)
KW - Moving target indication (MTI)
KW - Space-time adaptive processing (STAP)
UR - http://www.scopus.com/inward/record.url?scp=85126065310&partnerID=8YFLogxK
U2 - 10.1109/IGARSS47720.2021.9553214
DO - 10.1109/IGARSS47720.2021.9553214
M3 - Conference contribution
AN - SCOPUS:85126065310
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 5243
EP - 5246
BT - IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021
Y2 - 12 July 2021 through 16 July 2021
ER -