TY - GEN
T1 - Geosynchronous SAR imaging algorithm research
AU - Ding, Zegang
AU - Yin, Wei
AU - Zhang, Tianyi
AU - Zhang, Ziqing
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/2
Y1 - 2016/7/2
N2 - The imaging in geosynchronous synthetic aperture radar (GEO SAR) is more difficult than that of the conventional low earth orbit (LEO) SAR. This paper discusses the problems in GEO SAR imaging, reviews the previous studies, and provides basic solutions to the remaining problems. The two-dimensional space variance of the focusing parameters in the large scene, especially in the squint mode, has not been solved completely, and further improvement for the non-linear chirp scaling method is required. The nearly zero time bandwidth product at some orbital positions of GEO SAR causes the infeasibility of the frequency domain algorithms, and a time domain compensation method can be studied to enlarge the time bandwidth product. Besides, in the long integration time of GEO SAR, the effects of non-ideal factors and the backscattering characteristics variance of the target are quite serious, and the corresponding motion compensation methods require to be studied.
AB - The imaging in geosynchronous synthetic aperture radar (GEO SAR) is more difficult than that of the conventional low earth orbit (LEO) SAR. This paper discusses the problems in GEO SAR imaging, reviews the previous studies, and provides basic solutions to the remaining problems. The two-dimensional space variance of the focusing parameters in the large scene, especially in the squint mode, has not been solved completely, and further improvement for the non-linear chirp scaling method is required. The nearly zero time bandwidth product at some orbital positions of GEO SAR causes the infeasibility of the frequency domain algorithms, and a time domain compensation method can be studied to enlarge the time bandwidth product. Besides, in the long integration time of GEO SAR, the effects of non-ideal factors and the backscattering characteristics variance of the target are quite serious, and the corresponding motion compensation methods require to be studied.
KW - Geosynchronous SAR imaging
KW - non-ideal factors
KW - slant range history
KW - small time bandwidth production
KW - space variance
UR - http://www.scopus.com/inward/record.url?scp=85016322646&partnerID=8YFLogxK
U2 - 10.1109/ICSP.2016.7877801
DO - 10.1109/ICSP.2016.7877801
M3 - Conference contribution
AN - SCOPUS:85016322646
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 82
EP - 86
BT - ICSP 2016 - 2016 IEEE 13th International Conference on Signal Processing, Proceedings
A2 - Baozong, Yuan
A2 - Qiuqi, Ruan
A2 - Yao, Zhao
A2 - Gaoyun, An
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE International Conference on Signal Processing, ICSP 2016
Y2 - 6 November 2016 through 10 November 2016
ER -