TY - GEN
T1 - A new method for ground moving target imaging with single-antenna SAR
AU - Huang, Penghui
AU - Liao, Guisheng
AU - Yang, Zhiwei
AU - Xia, Xiang Gen
AU - Ma, Jingtao
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2017/10/4
Y1 - 2017/10/4
N2 - When the synthetic aperture radar (SAR) imaging is applied to observe a ground scene containing a ground moving target, the moving target image will be typically smeared due to the range cell migration and Doppler spectrum broadening caused by target motions. To eliminate these motion effects, a novel algorithm for ground moving target imaging, which is based on an improved axis rotation-time reversal transform (IAR-TRT), is proposed in this paper. In this method, the linear range migration is corrected by an improved axis rotation (IAR) operation and then the coherent integration is accomplished by a time reversal transform (TRT). The proposed method has low computational complexity since the exhaustive searching for the Doppler chirp rate estimation is avoided, which is suitable for real-time imaging. In addition, the defocusing influence of Doppler ambiguity can be eliminated. The effectiveness of the proposed algorithm is demonstrated by the simulation results in a single-channel airborne SAR system.
AB - When the synthetic aperture radar (SAR) imaging is applied to observe a ground scene containing a ground moving target, the moving target image will be typically smeared due to the range cell migration and Doppler spectrum broadening caused by target motions. To eliminate these motion effects, a novel algorithm for ground moving target imaging, which is based on an improved axis rotation-time reversal transform (IAR-TRT), is proposed in this paper. In this method, the linear range migration is corrected by an improved axis rotation (IAR) operation and then the coherent integration is accomplished by a time reversal transform (TRT). The proposed method has low computational complexity since the exhaustive searching for the Doppler chirp rate estimation is avoided, which is suitable for real-time imaging. In addition, the defocusing influence of Doppler ambiguity can be eliminated. The effectiveness of the proposed algorithm is demonstrated by the simulation results in a single-channel airborne SAR system.
KW - Ground moving target indication (GMTI)
KW - Improved axis rotation (IAR)
KW - Synthetic aperture radar
KW - Time reversal transform (TRT)
UR - https://www.scopus.com/pages/publications/85034630106
U2 - 10.1109/RADAR.2016.8059207
DO - 10.1109/RADAR.2016.8059207
M3 - Conference contribution
AN - SCOPUS:85034630106
T3 - 2016 CIE International Conference on Radar, RADAR 2016
BT - 2016 CIE International Conference on Radar, RADAR 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 CIE International Conference on Radar, RADAR 2016
Y2 - 10 October 2016 through 13 October 2016
ER -