TY - JOUR
T1 - Impacts of time-variance background ionosphere on L-band geosynchronous SAR imaging
AU - Tian, Ye
AU - Hu, Cheng
AU - Zhang, Xinyu
AU - Long, Teng
AU - Ding, Zegang
AU - Bian, Mingming
N1 - Publisher Copyright:
© VDE VERLAG GMBH · Berlin · Offenbach, Germany.
PY - 2014
Y1 - 2014
N2 - Due to the long integration time of Geosynchronous Synthetic Aperture Radar (GEO SAR), the variance of ionosphere within integration time cannot be ignored, thus it is necessary to take the effects of ionosphere variance into consideration. In this paper, a model is applied to describe the total electron content (TEC) variance within integration time. Then, the effect of phase error introduced by time-variance ionopshere on GEO SAR imaging is analyzed based on this model. After that, the mathematics expression of GEO SAR image displacement and image defocus is obtained, the corresponding influence is simulated. Finally, the conclusion is drawn.
AB - Due to the long integration time of Geosynchronous Synthetic Aperture Radar (GEO SAR), the variance of ionosphere within integration time cannot be ignored, thus it is necessary to take the effects of ionosphere variance into consideration. In this paper, a model is applied to describe the total electron content (TEC) variance within integration time. Then, the effect of phase error introduced by time-variance ionopshere on GEO SAR imaging is analyzed based on this model. After that, the mathematics expression of GEO SAR image displacement and image defocus is obtained, the corresponding influence is simulated. Finally, the conclusion is drawn.
UR - http://www.scopus.com/inward/record.url?scp=84991608372&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84991608372
SN - 2197-4403
VL - Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
SP - 319
EP - 322
JO - Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
JF - Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
M1 - 6856794
ER -