专利详情

专利名称	Method and device for steering attitude of satellite carrying synthetic aperture radar
申请号	EP20140169567	专利类型	EP
公开（公告）号	EP2816371(B1)	公开（授权）日	2016.10.12
申请（专利权）人	中国科学院电子学研究所	发明（设计）人	DENG, YUNKAI;ZHAO, SHUO;WANG, YU;ZHANG, ZHIMIN;ZHAO, FENGJUN;WANG, CHUNLE;LIU, YUE;LIU, YABO
主分类号	G01S13/90	IPC主分类号	G01S13/90;G05D1/08
专利有效期	Method and device for steering attitude of satellite carrying synthetic aperture radar 至Method and device for steering attitude of satellite carrying synthetic aperture radar	法律状态
说明书摘要	A method for steering an attitude of a satellite carrying a Synthetic Aperture Radar (SAR) is disclosed. The method includes: establishing a two-body model and an SAR geometric model, and acquiring, according to the two-body model and the SAR geometric model, a normal direction of a zero Doppler plane where the satellite locates; according to the SAR geometric model, acquiring a yaw steering angle of the satellite when a beam direction of the satellite is vertical to the normal direction of the zero Doppler plane, and steering the attitude of the satellite according to the yaw steering angle. Meanwhile, the present disclosure also provides a device for steering an attitude of a satellite carrying SAR. Through the technical solutions of the present disclosure, a Doppler center frequency of SAR echo data is reduced in the case of a zero pitch angle or a specific pitch angle, and thereby reducing the Doppler center frequency to around zero Hertz.