TY - GEN
T1 - An improved wide swath imaging algorithm based on series reversion in GEO SAR
AU - Liu, Zhipeng
AU - Long, Teng
AU - Hu, Cheng
AU - Zeng, Tao
PY - 2012
Y1 - 2012
N2 - In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time (SAT) is very long and the trajectory mode should be considered as curve. This paper mainly analyzes the impacts of target azimuth position displacement on GEO SAR image formation. Because GEO SAR imaging need be based on the curved trajectory, targets' azimuth position displacement on GEO SAR image formation can affect targets' defocusing. This point will be analyzed by comparing two-dimensional (2-D) spectrum in GEO SAR and low earth orbit (LEO) SAR and some simulations. In the imaging formulation, to focusing a large scene, we present an improved secondary range compression (SRC) algorithm. In this proposed SRC algorithm, the azimuth compression function can adapt itself by changing the azimuth displacement. Finally, a large scene's imaging under the long SAT is realized.
AB - In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time (SAT) is very long and the trajectory mode should be considered as curve. This paper mainly analyzes the impacts of target azimuth position displacement on GEO SAR image formation. Because GEO SAR imaging need be based on the curved trajectory, targets' azimuth position displacement on GEO SAR image formation can affect targets' defocusing. This point will be analyzed by comparing two-dimensional (2-D) spectrum in GEO SAR and low earth orbit (LEO) SAR and some simulations. In the imaging formulation, to focusing a large scene, we present an improved secondary range compression (SRC) algorithm. In this proposed SRC algorithm, the azimuth compression function can adapt itself by changing the azimuth displacement. Finally, a large scene's imaging under the long SAT is realized.
KW - Curved Trajectory Model
KW - GEO SAR
KW - Secondary Range Compression (SRC) algorithm
UR - https://www.scopus.com/pages/publications/84873108979
U2 - 10.1109/IGARSS.2012.6350963
DO - 10.1109/IGARSS.2012.6350963
M3 - Conference contribution
AN - SCOPUS:84873108979
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 2078
EP - 2081
BT - IGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
Y2 - 22 July 2012 through 27 July 2012
ER -