TY - GEN
T1 - Aperture coherent processing in distributed SAR
AU - Yang, C.
AU - Zeng, T.
AU - Hu, C.
PY - 2009
Y1 - 2009
N2 - In synthetic aperture radar (SAR), the azimuth resolution is limited by synthetic aperture length and it is difficult to be improved. A novel solution is to construct a bigger aperture by using several apertures in distributed SAR. But the precondition is to obtain the coherent information, that is, the time delay between these apertures. In this paper, the problem of abstracting coherent information between apertures is researched, and the algorithm of aperture coherent processing is provided. Firstly the signal models are built by modern spectral estimation techniques, and then by the model the original signals received by distributed SAR are extrapolated. Finally, the time delay between apertures is estimated by cross correlation. The algorithm is proved to be valid by simulation.
AB - In synthetic aperture radar (SAR), the azimuth resolution is limited by synthetic aperture length and it is difficult to be improved. A novel solution is to construct a bigger aperture by using several apertures in distributed SAR. But the precondition is to obtain the coherent information, that is, the time delay between these apertures. In this paper, the problem of abstracting coherent information between apertures is researched, and the algorithm of aperture coherent processing is provided. Firstly the signal models are built by modern spectral estimation techniques, and then by the model the original signals received by distributed SAR are extrapolated. Finally, the time delay between apertures is estimated by cross correlation. The algorithm is proved to be valid by simulation.
KW - Aperture coherent processing
KW - Cross correlation
KW - Distributed SAR
KW - Extrapolation
KW - Modern spectral estimation
UR - http://www.scopus.com/inward/record.url?scp=70350158677&partnerID=8YFLogxK
U2 - 10.1049/cp.2009.0428
DO - 10.1049/cp.2009.0428
M3 - Conference contribution
AN - SCOPUS:70350158677
SN - 9781849190107
T3 - IET Conference Publications
BT - IET International Radar Conference 2009
T2 - IET International Radar Conference 2009
Y2 - 20 April 2009 through 22 April 2009
ER -