专利详情

专利名称	Spaceborne Multi-Channel Synthetic Aperture Radar Imaging Device
申请号	EP20140169332	专利类型	EP
公开（公告）号	EP2896971(B1)	公开（授权）日	2016.03.23
申请（专利权）人	中国科学院电子学研究所	发明（设计）人	DENG, YUNKAI;WANG, YU;ZHANG, ZHIMIN;YU, WEIDONG;ZHAO, FENGJUN;WANG, WEI;GUO, LEI;WANG, CHUNLE
主分类号	G01S13/90	IPC主分类号	G01S13/90
专利有效期	Spaceborne Multi-Channel Synthetic Aperture Radar Imaging Device 至Spaceborne Multi-Channel Synthetic Aperture Radar Imaging Device	法律状态
说明书摘要	The present disclosure provides a spaceborne multi-channel synthetic aperture radar imaging device, the plurality of paths of elevation-directional receiving antenna assemblies are arranged equidistantly in elevation direction of the multi-channel SAR imaging system; each of the plurality of paths of elevation-directional receiving antenna assemblies receives a radar echo, and generates a path of elevation-directional echo data; the echo data received by the plurality of paths of elevation-directional receiving antenna assemblies forms a path of echo signal after passing through the elevation-directional digital beam forming unit, a plurality of paths of elevation-directional receiving antennas corresponding to the path of echo signal serve as a column of receiving antennas; the plurality of columns of azimuth-directional receiving antenna assemblies are arranged in azimuth direction of the multi-channel SAR imaging system; each column of azimuth-directional receiving antenna assemblies receives radar echoes, and outputs a path of azimuth-directional echo data, wherein the plurality of columns of azimuth-directional receiving antenna assemblies generate a plurality of paths of echo signals after passing through respective digital beam forming unit, and the plurality of paths of echo signals enter the azimuth-directional spectrum reconstruction unit to implement azimuth-directional spectrum reconstruction; the azimuth-directional spectrum reconstruction unit, with its input ends connected respectively with output ends of the plurality of paths of elevation-directional digital beam forming units, is configured to perform azimuth-directional spectrum reconstruction on echo signals outputted from the digital beam forming units, generate and output a SAR echo signal; and the imaging device, with its input end connected with the output end of the azimuth-directional spectrum reconstruction unit, is configured to receive the SAR echo signal and generate a SAR image from the SAR echo signal.