TY - GEN
T1 - Concepts, properties, and imaging technologies for GEO SAR
AU - Yu, Ze
AU - Chen, Jie
AU - Li, Chunsheng
AU - Li, Zhuo
AU - Zhang, Yan
PY - 2009
Y1 - 2009
N2 - Characteristics of Geosynchronous Synthetic Aperture Radar (GEO SAR), including ground velocity, integration time, azimuth resolution and other factors, are investigated. And the relationship between them and orbital elements is analyzed. Then a subaperture mode based on yawing steering which is more suitable for GEO SAR is proposed. By applying this mode reduction of range migration is obvious, and system parameters of L-band GEO SAR are designed, including the antenna size, the pulse width, the peak transmitted power, and pulse repetition frequency. Finally a modified Range Doppler (RD) algorithm based on quintic polynomial and a Chirp Scaling (CS) algorithm based on spectrum mosaic are advanced. Point target simulation is implemented and the azimuth resolution is assessed according to the rule of being able to distinguish adjacent targets. It is demonstrated that the proposed image formation algorithms can provide a spatial resolution better than 15m.
AB - Characteristics of Geosynchronous Synthetic Aperture Radar (GEO SAR), including ground velocity, integration time, azimuth resolution and other factors, are investigated. And the relationship between them and orbital elements is analyzed. Then a subaperture mode based on yawing steering which is more suitable for GEO SAR is proposed. By applying this mode reduction of range migration is obvious, and system parameters of L-band GEO SAR are designed, including the antenna size, the pulse width, the peak transmitted power, and pulse repetition frequency. Finally a modified Range Doppler (RD) algorithm based on quintic polynomial and a Chirp Scaling (CS) algorithm based on spectrum mosaic are advanced. Point target simulation is implemented and the azimuth resolution is assessed according to the rule of being able to distinguish adjacent targets. It is demonstrated that the proposed image formation algorithms can provide a spatial resolution better than 15m.
KW - Conceptual design
KW - Geosynchronous orbit
KW - Imaging techniques
KW - Synthetic aperture radar
UR - https://www.scopus.com/pages/publications/71549171909
U2 - 10.1117/12.832809
DO - 10.1117/12.832809
M3 - 会议稿件
AN - SCOPUS:71549171909
SN - 9780819478054
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - MIPPR 2009 - Multispectral Image Acquisition and Processing
T2 - MIPPR 2009 - Multispectral Image Acquisition and Processing: 6th International Symposium on Multispectral Image Processing and Pattern Recognition
Y2 - 30 October 2009 through 1 November 2009
ER -