Liu Xiang of China set a world mark in the 110-meter hurdles on July 12, breaking the record he shared with Britain’s Colin Jackson. Liu’s time of 12.88 seconds at the IAAF Super Grand Prix athletics meeting in Laus...Liu Xiang of China set a world mark in the 110-meter hurdles on July 12, breaking the record he shared with Britain’s Colin Jackson. Liu’s time of 12.88 seconds at the IAAF Super Grand Prix athletics meeting in Laussane, Switzerland was 0.03 better than the record he matched in winning gold at the 2004 Athens Olympics.展开更多
Dear editor,Geosynchronous synthetic aperture radar(GEO SAR)[1,2]has an inclined geosynchronous orbit of around 36000 km,which leads to its short revisit time of around 24 hours and a wide coverage of up to approximat...Dear editor,Geosynchronous synthetic aperture radar(GEO SAR)[1,2]has an inclined geosynchronous orbit of around 36000 km,which leads to its short revisit time of around 24 hours and a wide coverage of up to approximately one third of the Earth surface.Its long integration time guarantees the fine resolution.Thus,GEO SAR owns the promising capability of providing images with the high resolution,展开更多
文摘Liu Xiang of China set a world mark in the 110-meter hurdles on July 12, breaking the record he shared with Britain’s Colin Jackson. Liu’s time of 12.88 seconds at the IAAF Super Grand Prix athletics meeting in Laussane, Switzerland was 0.03 better than the record he matched in winning gold at the 2004 Athens Olympics.
基金supported by National Natural Science Foundation of China (Grant Nos. 61225005, 61501032, 61120106004)
文摘Dear editor,Geosynchronous synthetic aperture radar(GEO SAR)[1,2]has an inclined geosynchronous orbit of around 36000 km,which leads to its short revisit time of around 24 hours and a wide coverage of up to approximately one third of the Earth surface.Its long integration time guarantees the fine resolution.Thus,GEO SAR owns the promising capability of providing images with the high resolution,
